Flake / Chiplet Model
Ice Machines
Flake Models QF0400/QF0800/
QF2200/QF2300
Chiplet Models QC0700
Service
Manual
Part Number 80-1214-3
Revised 8/2003
07/03
Download from Www.Somanuals.com. All Manuals Search And Download.
Table of Contents
Section 1
General Information
Model Numbers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
How to Read a Model Number . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Remote Condensing Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Bin Caster . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Ice Bagger . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Arctic Pure Water Filter System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Manitowoc Cleaner and Sanitizer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Model/Serial Number Location . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Owner Warranty Registration Card . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Warranty Coverage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Labor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Exclusions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1-1
1-1
1-1
1-1
1-1
1-1
1-1
1-1
1-2
1-3
1-3
1-3
1-3
1-3
1-3
1-3
Section 2
Installation Instructions
Ice Machine Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2-1
2-1
2-1
2-1
2-2
2-2
2-3
2-3
2-3
2-3
2-3
2-4
2-4
2-5
2-5
2-5
2-5
2-5
2-6
2-6
2-7
2-7
2-7
2-7
2-8
2-8
2-8
2-8
2-8
QF400 Air Cooled Ice Machine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
QC700/QF800 Water Cooled Ice Machine . . . . . . . . . . . . . . . . . . . . . . . . . .
QC700/QF800 Air Cooled Ice Machine . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Ice Machine Head Section and Remote Condensing Unit Dimensions . . . . .
QF2200/QF2300 and RFC2085/RFC2385 Remote Condensing Unit . . . . .
Location of Ice Machine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Ice Machine Head Section Clearance Requirements . . . . . . . . . . . . . . . . . . . .
Ice Machine Heat of Rejection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Location of Remote Condensing Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Condensing Unit Clearance Requirements . . . . . . . . . . . . . . . . . . . . . . . . . .
Leveling the Ice Storage Bin . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Condenser Air Baffle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Electrical Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Fuse/Circuit Breaker . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Minimum Circuit Ampacity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Electrical Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
For United Kingdom Only . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Ice Machine Head Section Electrical Wiring Connections . . . . . . . . . . . . . . .
QC700/QF800 Ice Machine Head Section . . . . . . . . . . . . . . . . . . . . . . . . . .
QF2200 Ice Machine Head Section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
QF2300 Ice Machine Head Section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Remote Electrical Wiring Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
RFC2085 Remote Condensing Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
208-230/1/60 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
RFC2385 Remote Condensing Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
208-230/1/60 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Part No. 80-1214-3
1
Revised 8/2003
Download from Www.Somanuals.com. All Manuals Search And Download.
Table of Contents (continued)
Ice Machine Head Section Water Supply and Drains . . . . . . . . . . . . . . . . . . .
Potable Water Supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Potable Water Inlet Lines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Drain Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Cooling Tower Applications
2-9
2-9
2-9
2-9
(Water-Cooled Models) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Water Supply and Drain Line Sizing/Connections . . . . . . . . . . . . . . . . . . . .
Refrigeration System Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
(QF2200/RFC2085 and QF2300/RFC2385 Only) . . . . . . . . . . . . . . . . . . . .
Usage with Non-Manitowoc
2-9
2-10
2-11
2-11
Condensing Units . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Refrigeration Line Set Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
A. Line Set Length . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
B. Line Set Rise or Drop . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
C. Suction Line Oil Traps . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2-11
2-12
2-12
2-12
2-12
2-13
Section 3
Maintenance
Component Identification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Ice Machine Head Sections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Remote Condensing Units . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Operational Checks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Water Level Check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Interior Cleaning and Sanitizing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Exterior Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Cleaning the Condenser . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Air-Cooled Condenser . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Manitowoc’s Cleaning Technology . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Preventative Maintenance Cleaning Procedure . . . . . . . . . . . . . . . . . . . . . .
Cleaning Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Sanitizing Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Procedure to Clean Heavily Scaled Flake/Chiplet Ice Machines . . . . . . . . .
Removal of Parts For Cleaning/Sanitizing . . . . . . . . . . . . . . . . . . . . . . . . . .
Removal from Service/Winterization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Water Cooled Condensing Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3-1
3-1
3-3
3-4
3-4
3-4
3-5
3-5
3-5
3-6
3-6
3-7
3-7
3-9
3-10
3-11
3-12
3-19
3-19
3-19
2
Part No. 80-1214-3
Revised 8/2003
Download from Www.Somanuals.com. All Manuals Search And Download.
Table of Contents (continued)
Section 4
Ice Machine Sequence of Operation
QF400/QC700/QF800 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4-1
4-1
4-1
4-1
4-1
4-2
4-2
4-2
4-2
4-2
4-3
4-3
4-3
4-3
4-3
Prior to Start-Up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Initial Start-Up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Automatic Shut-Off . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Flush Sequence in the “ICE” Position . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
QF2200 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Prior to Start-Up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Initial Start-Up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Automatic Shut-Off . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Flush Sequence in the “ICE” Position . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
QF2300 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Prior to Start-Up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Initial Start-Up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Automatic Shut-Off . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Flush Sequence in the “ICE” Position . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Section 5
Troubleshooting
Checklist . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Safeguard Feature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Reset Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Standby Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SafeGuard Indicator Lights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SafeGuard Modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Gear Box Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
QF400 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
QC700/QF800 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Evaporator Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5-1
5-2
5-2
5-2
5-2
5-3
5-7
5-7
5-7
5-9
Section 6
Electrical System
Energized Parts Charts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
6-1
6-1
6-2
6-3
6-4
6-4
QF400/QC700/QF800 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
QF2200 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
QF2300 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Wiring Diagram Sequence of Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
QF400 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
QC700/QF800 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-10
QF2200 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-16
QF2300 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-26
Wiring Diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-36
Wiring Diagram Legend . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-36
QF400 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-37
QC700/QF800 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-38
QF2200 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-40
RFC2085 (230V/60Hz/1Ph - 230/50/1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-41
RFC2085 (208-230V/60Hz/3Ph) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-42
QF2300 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-43
RFC2385 (230V/60Hz/1Ph - 230/50/1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-44
RFC2385 (208-230V/60Hz/3Ph) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-45
Part No. 80-1214-3
3
Revised 8/2003
Download from Www.Somanuals.com. All Manuals Search And Download.
Table of Contents (continued)
Control Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Component Specifications and Diagnostics . . . . . . . . . . . . . . . . . . . . . . . . . .
ICE/OFF/CLEAN Toggle Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Bin Level Probe . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Motor Speed Sensor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Water Level Probes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Temperature Sensor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Temperature/Resistance Chart . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Control Board Relays . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Main Fuse . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Water Float Valve . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Water Level Check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
High Pressure Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Low Pressure Cut-Out Control (LPCO)
6-46
6-47
6-47
6-47
6-49
6-50
6-52
6-52
6-53
6-53
6-54
6-54
6-55
RFC2085/RFC2385 (QF2200/QF2300) Only . . . . . . . . . . . . . . . . . . . . . . . .
Fan Cycle Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Compressor Electrical Diagnostics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Diagnosing An Ice Machine That Will Not Run . . . . . . . . . . . . . . . . . . . . . . . .
Diagnosing A Condensing Unit That Will Not Run . . . . . . . . . . . . . . . . . . . . .
6-55
6-56
6-57
6-59
6-59
Section 7
Refrigeration System
Tubing Schematic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
7-1
7-1
7-2
7-3
7-4
7-5
7-5
7-6
7-6
7-6
QF400/QC700/QF800 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
QF2200/RFC2085 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
QF2300/RFC2385 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Refrigeration System Diagnostics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Before Beginning Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Ice Production/Quality Check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installation/Visual Inspection Checklist . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Water System Checklist . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SafeGuards . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Analyzing Discharge Pressure
During Freeze or Harvest Cycle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Analyzing Suction Pressure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Equalization Valve . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Water Regulating Valve (Water-Cooled Models Only) . . . . . . . . . . . . . . . . .
Headmaster Control Valve . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Freeze Cycle Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Cycle Time/24 Hour Ice Production/Refrigerant Pressure Charts . . . . . . . . .
QF400 Self-Contained Air Cooled . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
QC700 Self-COntained Air Cooled . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
QC700 Self-Contained Water Cooled . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
QF800 Self-Contained Air Cooled . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
QF800 Self-Contained Water Cooled . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
QF2200/RFC2085 Remote Air Cooled . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
QF2300/RFC2385 Remote Air Cooled . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
7-7
7-8
7-9
7-9
7-10
7-10
7-11
7-11
7-12
7-12
7-13
7-13
7-14
7-14
4
Part No. 80-1214-3
Revised 8/2003
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Table of Contents (continued)
Refrigerant Recovery/Evacuation and Recharging . . . . . . . . . . . . . . . . . . . . . . 7-15
Refrigerant Recovery/Evacuation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-15
System Contamination Clean-Up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-19
Replacing Pressure Controls Without
Removing Refrigerant Charge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-21
Filter-Driers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-23
Suction Clean-Up Filter/DRier . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-23
Total System Refrigerant Charges . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-23
Refrigerant Definitions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-24
Refrigerant Re-Use Policy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-25
Part No. 80-1214-3
5
Revised 8/2003
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Table of Contents (continued)
6
Part No. 80-1214-3
Revised 8/2003
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Section 1
General Information
Model Numbers
Accessories
This manual covers the following models:
BIN CASTER
Condensing
Unit
Replaces standard legs.
Flake Ice Chiplet Ice
ICE BAGGER
Undercounter
Maximize profits from bagged ice sales with this
convenient accessory. This sturdy unit rests on the bin
door frame, and adapts for left or right side filling.
Self-Contained
Air-Cooled
QF0406A
QF0806A
NA
NA
Self-Contained
Air-Cooled
QC0708A
NA
NA
ARCTIC PURE™ WATER FILTER SYSTEM
Self-Contained
Water Cooled
Remote
Engineered specifically for Manitowoc ice machines,
This water filter is an efficient, dependable, and
affordable method of inhibiting scale formation, filtering
sediment, and removing chlorine taste and odor.
QF0807W QC0709W
QF2296N
QF2396N
NA
NA
RFC2085
RFC2385
Air-Cooled
MANITOWOC CLEANER AND SANITIZER
Manitowoc Ice Machine Cleaner and Sanitizer are
available in convenient 16 oz. (473 ml) and 1 gal (3.78 l)
bottles. These are the only cleaner and sanitizer
approved for use with Manitowoc products.
!
Warning
PERSONAL INJURY POTENTIAL
Do not operate equipment that has been misused,
abused, neglected, damaged, or altered/modified
from that of original manufactured specifications.
Cleaner Part Number
16 oz. 94-0456-3 16 oz.
1 gallon 94-0580-3 1 gallon
Sanitizer Part Number
94-0565-3
94-0581-3
How to Read a Model Number
NOTE: The Manitowoc Automatic Cleaning System
(AuCS) accessory cannot be used with Flake/Chiplet Ice
Machines.
#
CUBE SIZE CONDENSER TYPE
6
7
8
9
FLAKE
AIR-COOLED
WATER-COOLED
AIR-COOLED
9 REMOTE
AIR-COOLED
FLAKE
CHIPLET
CHIPLET
WATER-COOLED
Q F 0807 W
ICE MACHINE
MODEL
ICE MACHINE
SERIES
ICE CUBE SIZE
CONDENSER TYPE
SELF-CONTAINEDAIR-COOLED
F
FLAKE
CHIPLET
A
C
W SELF-CONTAINEDWATER-COOLED
REMOTE AIR-COOLED
N
SV3106
Remote Condensing Unit
RFC 2385
CONDENSING
UNIT MODEL
CONDENSING
UNIT SERIES
SV3107
Part No. 80-1214-3
1-1
Revised 8/2003
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General Information
Section 1
Model/Serial Number Location
These numbers are required when requesting
information from your local Manitowoc distributor,
service representative, or Manitowoc Ice, Inc.
The model and serial number are listed on the OWNER
WARRANTY REGISTRATION CARD. They are also
listed on the MODEL/SERIAL NUMBER DECAL affixed
to the ice machine head section and condensing unit.
Both model/serial numbers must be referenced to obtain
warranty or service information.
MODEL / SERIAL
NUMBERS DECAL
(QF800/QC700/QF2200/
QF2300)
SV2019
MODEL / SERIAL
NUMBERS DECAL
(QF400)
SV2047
Model/Serial Number Location
1-2
Part No. 80-1214-3
Revised 8/2003
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Section 1
General Information
EXCLUSIONS
Owner Warranty Registration Card
The following items are not included in the ice machine’s
warranty coverage:
GENERAL
Warranty coverage begins the day the ice machine is
installed.
1. Normal maintenance, adjustments and cleaning as
outlined in this manual.
Important
2. Repairs due to unauthorized modifications to the ice
machine or use of non-standard parts without prior
written approval from Manitowoc Ice, Inc.
Complete and mail the OWNER WARRANTY
REGISTRATION CARD as soon as possible to
validate the installation date.
3. Damage caused by improper installation of the ice
machine, electrical supply, water supply or drainage,
or damage caused by floods, storms, or other acts of
God.
If the OWNER WARRANTY REGISTRATION CARD is
not returned, Manitowoc will use the date of sale to the
Manitowoc Distributor as the first day of warranty
coverage for your new ice machine.
4. Premium labor rates due to holidays, overtime,
etc.; travel time; flat rate service call charges;
mileage and miscellaneous tools and material
charges not listed on the payment schedule.
Additional labor charges resulting from the
inaccessibility of equipment are also excluded.
Warranty Coverage
GENERAL
The following Warranty outline is provided for your
convenience. For a detailed explanation, read the
warranty bond shipped with each product.
5. Parts or assemblies subjected to misuse, abuse,
neglect or accidents.
Contact your local Manitowoc Distributor or Manitowoc
Ice, Inc. if you need further warranty information.
6. Damage or problems caused by installation,
cleaning and/or maintenance procedures
inconsistent with the technical instructions provided
in this manual.
Important
This product is intended exclusively for commercial
application. No warranty is extended for personal,
family, or household purposes.
7. This product is intended exclusively for commercial
application. No warranty is extended for personal,
family, or household purposes.
PARTS
1. Manitowoc warrants the ice machine against defects
in materials and workmanship, under normal use
and service for two (2) years from the date of original
installation.
2. The compressor is covered by an additional three
(3) year (five years total) warranty beginning on the
date of the original installation.
LABOR
1. Labor required to repair or replace defective
components is covered for two (2) years from the
date of original installation.
Part No. 80-1214-3
1-3
Revised 8/2003
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General Information
Section 1
THIS PAGE INTENTIONALLY LEFT BLANK
1-4
Part No. 80-1214-3
Revised 8/2003
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Section 2
Installation Instructions
Ice Machine Dimensions
QF400 AIR COOLED ICE MACHINE
QC700/QF800 AIR COOLED ICE MACHINE
22”
(55.88 CM)
19”
(48.2 CM)
26”
(66 CM)
24.5”
(62.23 CM)
32.5”
(82.55 CM)
26.5”
(67.3 CM)
7.2”
(18.2 CM)
3.03”
(7.7 CM)
3.04”
(7.72 CM)
1.36”
(3.5 CM)
6”
26.5”
(67.3 CM)
(15.24 CM)
5.9”
(15 CM)
SV2050
1.6”
(4 CM)
SV2003
2.9”
(7.3 CM)
3”
(7.6 CM)
Important
Failure to follow these installation guidelines may
affect warranty coverage.
QC700/QF800 WATER COOLED ICE MACHINE
11.13”
(28.3 CM)
1.9”
(4.8 CM)
2”
(5.1 CM)
26.5”
(67.3 CM)
13.5”
(34.3 CM)
11.5”
(29.2 CM)
5.6”
(14.3 CM)
SV2004
Part No. 80-1214-3
2-1
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Installation Instructions
Section 2
Ice Machine Head Section and Remote Condensing Unit Dimensions
QF2200/QF2300 AND RFC2085/RFC2385 REMOTE CONDENSING UNIT
24.13”
(53.7 CM)
24.5”
(62.23 CM)
34”
(86.4 CM)
30”
(76.2 CM)
2.25”
(5.72 CM)
4.5”
(11.43 CM)
25.75”
14.5”
23.5”
(67.3 CM)
(36.8 CM)
14.5”
(36.8 CM)
9.5”
(24.1 CM)
SV1784
2.8”
(7.12 CM)
1.8”
(4.6 CM)
10.75”
(27.3 CM)
SV1758
9.8”
(24.89 CM)
2-2
Part No. 80-1214-3
Revised 8/2003
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Section 2
Installation Instructions
Ice Machine Heat of Rejection
Location of Ice Machine
The location selected for the ice machine must meet the
following criteria. If any of these criteria are not met,
select another location.
Series
Condensing Unit
Heat of Rejection*
QF400
QF700
4000
7800
•
•
•
•
•
•
The location must be free of airborne and other
contaminants.
QF800
7800
The air temperature must be at least 45°F (7°C), but
must not exceed 110°F (43.4°C).
QF2200/RFC2085
QF2300/RFC2385
21000
21000
*B.T.U. / Hour
The water temperature must be at least 45°F (7°C),
but must not exceed 90°F (32.2°C).
Ice machines, like other refrigeration equipment, reject
heat through the condenser. It is helpful to know the
amount of heat rejected by the ice machine when sizing
the air conditioning equipment where self-contained air-
cooled ice machines are installed. QF2200/QF2300 ice
machines add an insignificant amount of load to a
conditioned space.
The location must not be near heat-generating
equipment or in direct sunlight.
The location must be capable of supporting the
weight of the ice machine and a full bin of ice.
The location must allow enough clearance for water,
drain and electrical connections in the rear of the ice
machine.
Location of Remote Condensing Unit
•
The location must not obstruct airflow through or
around the ice machine. QF400 airflow is in and out
of the front of the ice machine. Refer to below for
clearance requirements.
The location selected for the Remote Condensing Unit
must meet the following criteria. If any of these criteria
are not met, select another location.
•
•
•
The air temperature must be at least -20°F (-28.9°C)
but must not exceed 120°F (49°C).
Ice Machine Head Section Clearance
Requirements
The location must not allow exhaust fan heat and/or
grease to enter the condenser.
Self-Contained
Air-Cooled
Self-Contained
Water-Cooled
QF400
The location must not obstruct airflow through or
around the condensing unit. Refer to the chart below
for clearance requirements.
Top/Sides
Back
5” (12.7 mm)
5” (12.7 mm)
NA
NA
CONDENSING UNIT CLEARANCE REQUIREMENTS
Self-Contained
Air-Cooled
Self-Contained
Water-Cooled
QC700/QF800
Ice Machine Condensing Unit
Top/Sides
Back
8” (20.3 mm)
5” (12.7 mm)
5” (12.7 mm)
5” (12.7 mm)
Top/Sides
Front/Back
There is no minimum clearance required,
although 6” (12.7 cm) is recommended for
efficient operation and servicing only.
4’ (1.2)
Self-Contained
Air-Cooled
Remote
Air-Cooled
QF2200/QF2300
Top/Sides
Back
8” (20.3 mm)
5” (12.7 mm)
5” (12.7 mm)
5” (12.7 mm)
Caution
!
The ice machine head section must be protected if it
will be subjected to temperatures below 32°F (0°C).
Failure caused by exposure to freezing
temperatures is not covered by the warranty. See
“Removal from Service/Winterization”.
Part No. 80-1214-3
2-3
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Installation Instructions
Section 2
Leveling the Ice Storage Bin
Condenser Air Baffle
1. Screw the leveling legs onto the bottom of the bin.
2. Screw the foot of each leg in as far as possible.
(QC700/QF800 Air-Cooled Ice Machines Only)
The air-cooled baffle prevents condenser air from
recirculating. To install:
1. Remove the back panel screws next to the
condenser.
Caution
!
The legs must be screwed in tightly to prevent them
from bending.
2. Align the mounting holes in the air baffle with the
screw holes and reinstall the screws.
3. Move the bin into its final position.
4. Level the bin to assure that the bin door closes and
seals properly. Use a level on top of the bin. Turn
each foot as necessary to level the bin.
NOTE: An optional caster assembly is available for use
in place of the legs. Installation instructions are supplied
with the casters.
AIR
BAFFLE
SCREWS
THREAD LEVELING
LEG INTO BASE OF
CABINET
SV1607
THREAD ‘FOOT’ IN AS
FAR AS POSSIBLE
Air Baffle
SV1606
Leveling Leg and Foot
2-4
Part No. 80-1214-3
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Section 2
Installation Instructions
FUSE/CIRCUIT BREAKER
Electrical Service
A separate fuse/circuit breaker must be provided for
each ice machine. Circuit breakers must be H.A.C.R.
rated (does not apply in Canada).
GENERAL
!
Warning
QF400 115/60/1 ice machines are factory pre-wired
with a power cord and 5-15P plug confirmation.
All wiring must conform to local, state and national
codes.
QF400 230/50/1 ice machines are factory pre-wired
with a power cord, no plug is supplied.
VOLTAGE
QF2200/QF2300 with Remote Condensing Unit the
ice machine head section and remote condensing unit
are wired independent of each other. A separate
dedicated fuse/circuit breaker must be provided for each
section. Circuit breakers must be H.A.C.R. rated (does
not apply in Canada).
The maximum allowable voltage variation is 10% of the
rated voltage on the ice machine model/serial number
plate at start-up (when the electrical load is highest).
!
Warning
The ice machine must be grounded in accordance
with national and local electrical codes.
MINIMUM CIRCUIT AMPACITY
QC700/QF800/QF2200/QF2300 Only
The minimum circuit ampacity is used to help select the
wire size of the electrical supply. (Minimum circuit
ampacity is not the ice machine’s running amp load.)
The wire size (or gauge) is also dependent upon
location, materials used, length of run, etc., so it must be
determined by a qualified electrician.
Part No. 80-1214-3
2-5
Revised 8/2003
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Installation Instructions
Section 2
Electrical Requirements
Ice Machine Head Section
Remote
Air-Cooled
Air-Cooled
Water Cooled
Voltage
Ice
Machine
Maximum
Phase
Cycle
Maximum
Fuse/Circuit
Breaker
Minimum
Circuit
Amps
Total
Circuit
Amps
Minimum
Circuit
Amps
Maximum
Fuse/Circuit
Breaker
Minimum
Circuit
Amps
Fuse/
Circuit
Breaker
115/1/60
230/1/50
115/1/60
230/1/50
230/1/60
115/1/60
230/1/50
230/1/60
115/1/60
230/1/50
230/1/60
115/1/60
230/1/50
230/1/60
15
15
NA
NA
18.9
8.8
8.7
18.9
8.8
8.7
NA
NA
NA
NA
NA
NA
9.8
4.2
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
15
NA
NA
NA
NA
NA
NA
NA
NA
4.3
NA
NA
5.5*
NA
NA
NA
NA
30
NA
NA
17.9
8.4
8.3
17.9
8.4
8.3
NA
NA
NA
NA
NA
NA
QF400
QC700
30
20
20
15
15
30
30
QF800
QF2200
QF2300
20
20
15
15
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
15
NA
NA
Interconnecting wiring (115/60/1) is required between the ice machine and condensing unit to energize the contactor coil.
* Indicates preliminary data
Remote Condensing Unit
Voltage Phase
Cycle
208-230/1/60
208-230/3/60
208-230/1/60
208-230/3/60
Maximum Fuse/Circuit
Breaker
Condensing Unit
RFC2085
Minimum Circuit Amps
30
20
30
20
15.6
11.2
18.5*
11.2*
RFC2385
* Indicates preliminary data
For United Kingdom Only
As the colours of the wires in the mains lead of the appliance may not correspond with the coloured markings
identifying the terminals in your plug, proceed as follows:
•
The wire which is coloured green and yellow must be connected to the terminal in the plug which is marked with
the letter E or by the earth ground symbol or coloured green or green and yellow.
•
•
The wire coloured blue must be connected to the terminal which is marked with the letter N or coloured black.
The wire coloured brown must be connected to the terminal which is marked with the letter L or coloured red.
2-6
Part No. 80-1214-3
Revised 8/2003
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Section 2
Installation Instructions
Ice Machine Head Section Electrical Wiring Connections
QF2200 ICE MACHINE HEAD SECTION
115/60/1
!
Warning
These diagrams are not intended to show proper
wire routing, wire sizing, disconnects, etc., only the
correct wire connections.
ICE MACHINE
CONNECTIONS
All electrical work, including wire routing and
grounding, must conform to local, state and national
electrical codes.
L
L
1
1
Though wire nuts are shown in the drawings, the ice
machine field wiring connections may use either
wire nuts or screw terminals.
N = 115V
N = 115V
GROUND
GROUND
QC700/QF800 ICE MACHINE HEAD SECTION
115/1/60 or 208-230/1/60
TO FUSE/BREAKER.
DISCONNECT ALL
LINE VOLTAGE DO
NOT DISCONNECT
GROUND.
L
L
1
1
QF2300 ICE MACHINE HEAD SECTION
115/60/1
N=115V
OR
L2=208-230V
ICE MACHINE
CONDENSING UNIT
CONNECTIONS
CONNECTIONS
C
C
1
1
GROUND
GROUND
ICE MACHINE
CONNECTIONS
C
C
2
2
SV1258
L
L
1
1
230/1/50
L
N = 115V
L
1
N = 115V
1
GROUND
GROUND
N
TO FUSE/BREAKER.
DISCONNECT ALL
LINE VOLTAGE DO
NOT DISCONNECT
GROUND.
N
GROUND
GROUND
ICE MACHINE
CONNECTIONS
TO SEPARATE
FUSE/BREAKER.
DISCONNECT ALL
POLES.
SV1191
Part No. 80-1214-3
2-7
Revised 8/2003
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Installation Instructions
Section 2
RFC2385 REMOTE CONDENSING UNIT
208-230/1/60
Remote Electrical Wiring Connections
!
Warning
These diagrams are not intended to show proper
wire routing, wire sizing, disconnects, etc., only the
correct wire connections.
ICE MACHINE
CONNECTIONS
CONDENSING UNIT
CONNECTIONS
C
C
1
1
All electrical work, including wire routing and
grounding, must conform to local, state and national
electrical codes.
C
C
2
2
Though wire nuts are shown in the drawings, the ice
machine field wiring connections may use either
wire nuts or screw terminals.
L
L
1
1
RFC2085 REMOTE CONDENSING UNIT
208-230/1/60
L
L
2
2
CONDENSING UNIT
CONNECTIONS
GROUND
GROUND
TO FUSE/BREAKER.
DISCONNECT ALL
LINE VOLTAGE DO
NOT DISCONNECT
GROUND.
L
L
1
1
L
L
2
2
GROUND
GROUND
TO FUSE/BREAKER.
DISCONNECT ALL
LINE VOLTAGE DO
NOT DISCONNECT
GROUND.
2-8
Part No. 80-1214-3
Revised 8/2003
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Section 2
Installation Instructions
DRAIN CONNECTIONS
Ice Machine Head Section Water Supply
and Drains
Follow these guidelines when installing drain lines to
prevent drain water from flowing back into the ice
machine and storage bin:
POTABLE WATER SUPPLY
Local water conditions may require treatment of the
water to inhibit scale formation, filter sediment, and
remove chlorine odor and taste.
•
•
•
•
Drain lines must have a 1.5 inch drop per 5 feet of
run (2.5 cm per meter), and must not create traps.
The floor drain must be large enough to
accommodate drainage from all drains.
Important
If you are installing a Manitowoc water filter system,
refer to the Installation Instructions supplied with the
filter system for ice making water inlet connections.
Run separate bin and water-cooled condenser drain
lines. Insulate them to prevent condensation.
Vent the bin and ice machine drain to the
atmosphere. The ice machine drain requires an 18”
vent. Do not vent the condenser drain on water-
cooled models.
POTABLE WATER INLET LINES
Follow these guidelines to install water inlet lines:
•
Do not connect the ice machine to a hot water supply.
Be sure all hot water restrictors installed for other
equipment are working. (Check valves on sink
faucets, dishwashers, etc.)
•
•
Drains must have a union or other suitable means to
allow in place disconnection from the ice machine
when servicing is required.
Insulate water inlet lines and drain lines to prevent
condensation.
•
•
If water pressure exceeds the maximum (80 psig
551.5 kPA) recommended pressure, obtain a water
pressure regulator from your Manitowoc distributor.
Cooling Tower Applications
(Water-Cooled Models)
Install a water shut-off valve and union for both the
ice making and condenser water lines.
A water cooling tower installation does not require
modification of the ice machine. The water regulator
valve for the condenser continues to control the
refrigeration discharge pressure.
It is necessary to know the amount of heat rejection, and
the pressure drop through the condenser and water
valves (inlet and outlet) when using a cooling tower on
an ice machine.
•
•
•
Water entering the condenser must not exceed 90°F
(32.2°C).
Water flow through the condenser must not exceed 5
gallons (19 liters) per minute.
Allow for a pressure drop of 7 psi (48 kPA) between
the condenser water inlet and the outlet of the ice
machine.
•
Water exiting the condenser must not exceed 110°F
(43.3°C).
Part No. 80-1214-3
2-9
Revised 8/2003
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Installation Instructions
Section 2
WATER SUPPLY AND DRAIN LINE SIZING/CONNECTIONS
Caution
!
Plumbing must conform to state and local codes.
Tubing Size Up to Ice
Machine Fitting
Location
Water Temperature
Water Pressure
Ice Machine Fitting
45°F (6°C) Min.
90°F (32.2°C) Max.
33°F (0.6°C) Min.
90°F (32.2°C) Max.
20 psi (137.9 kPA) Min.
80 psi (551.5 kPA) Max.
20 psi (137.9 kPA) Min.
150 psi (1034.2 kPA) Max.
3/8" Female
Pipe Thread
3/8" (9.5 mm) minimum
inside diameter
Ice Making
Water Inlet
1/2" Female
Pipe Thread
1/2" (12.7 mm) minimum
inside diameter
Condenser
Water Inlet
Condenser
Water Drain
1/2" Female
Pipe Thread
1/2" (12.7 mm) minimum
inside diameter
---
---
---
---
1/2" Female
Pipe Thread
1/2" (12.7 mm) minimum
inside diameter
Bin Drain
VENT TUBE
8” (20CM)
LONG
ICE MAKING
WATER INLET
TUBING 3/8” MIN.
I.D. (.95 SM)
SV2115
BIN DRAIN
WATER
SHUT-OFF
VALVE
SV1626
Typical Water Supply Drain Installation
2-10
Part No. 80-1214-3
Revised 8/2003
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Section 2
Installation Instructions
Factory Equipment Refrigeration Amounts
Refrigeration System Installation
ICE MACHINE HEAD SECTION
(QF2200/RFC2085 AND QF2300/RFC2385 ONLY)
Each ice machine head section ships from the factory
with a R-404A refrigerant charge appropriate for line
sets up to 50’ in length (12.5 lbs.). The serial tag on the
ice machine indicates the refrigerant charge. Additional
refrigerant must be added for line set lengths between
50’ and 100’ (1.5 lbs.).
Remote Single
QuietQube®
Circuit
Line Set*
Ice Machine
Condenser
RC-20
RC-30
RC-50
QF2200
QF2300
RFC2085
RFC2385
Caution
!
Insulation
Thickness
Never add more than nameplate charge to the
refrigeration system for any application.
Line Set
Suction Line Liquid Line
1/2”(13mm)
Suction Line
3/4 inch
1/2 inch
RC 20/30/50
(19.1 mm)
(12.7 mm)
1/4” (7mm)
Liquid Line
!
Warning
Potential Personal Injury Situation
USAGE WITH NON-MANITOWOC
CONDENSING UNITS
The ice machine head section contains the refrigerant
charge. Installation and brazing of the line sets must be
performed by
a
properly trained and EPA certified
Manitowoc Condensing Units are specifically designed
for usage with a Manitowoc Flake/Chiplet Ice Machine
Head Sections. Manitowoc Flake/Chiplet Ice Machines
will not operate with non-Manitowoc condensing units.
refrigeration technician aware of the dangers of dealing
with refrigerant charged equipment.
REMOTE CONDENSING UNIT
Each condensing unit ships from the factory pressurized
with 50/50 nitrogen helium mixture that must be removed
during the installation process (approximately 20 psig).
!
Warning
Installation of a Remote Condensing Unit may require
the use of special equipment for placement. Trained
and qualified personnel are required for proper
rigging and lifting.
REFRIGERATION LINE SETS/TRAPS KIT
Refrigeration Rated Tubing and Trap Kits are shipped
capped with atmospheric pressure.
Caution
!
The 60-month compressor warranty (including the 24-
month labor replacement warranty) will not apply if
the Manitowoc Ice Machine and remote Manitowoc
Condensing Unit are not installed according to
specifications. This warranty also will not apply if the
refrigeration system is modified with a condenser,
heat reclaim device, or other parts or assemblies not
manufactured by Manitowoc Ice, Inc.
Part No. 80-1214-3
2-11
Revised 8/2003
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Installation Instructions
Section 2
Refrigeration Line Set Installation
GENERAL
A. LINE SET LENGTH
Refrigeration line set installations consist of vertical and
horizontal line set distances between the ice machine
and the condensing unit. The following guidelines,
drawings and calculation methods must be followed to
assure proper oil return and condensing unit/ice
machine operation
100 feet (30.5 m) Length: The maximum measured
length the line set can be.
The receiver is designed to hold a charge sufficient to
operate the ice machine in ambient temperatures
between -20°F (-28.9°C) and 120°F (49°C), with line set
lengths of up to 100 feet (30.5 m).
!
Warning
Important
The following instructions are provided as a general
overview of a typical installation. Refer to the
Installation, Use and Care Manual for step by step
installation instructions.
The ice machines will not function with line sets
greater than 100 feet (30.5 m). Do not attempt to go
beyond this distance and add refrigerant charge to
compensate!
B. LINE SET RISE OR DROP
!
Warning
Disconnect electrical power to the ice machine head
section and the remote condensing unit before
proceeding.
!
Warning
35’ (10.7 M)
MAX.
DISTANCE
The ice machine head section contains refrigerant
charge. The ice machine head section contains three
(3) refrigeration valves that must remain closed until
proper installation of the line set is completed.
Step 1 Verify Ice Machine and Remote Condensing
Unit Locations Are Within Guidelines.
Prior to installation of the ice machine head section and
remote condensing unit be sure that the distance
between then is within the line set routing guidelines
outlined in this manual.
SV1751
35 feet (10.7 m) Rise: The maximum distance the
remote condensing unit can be above the ice machine.
Roof/Wall Penetration
If required, cut a 3-inch (76.2 mm) circular hole in the
wall or roof for routing of refrigeration tubing. A qualified
person must perform all roof penetrations.
Step 2 Route Refrigeration Tubing
15’ (4.5 M)
MAX.
DISTANCE
Properly route refrigeration tubing between the ice
machine head section and the remote condensing unit.
SV1750
15 feet (4.5 m) Drop: The maximum distance the
remote condensing unit can be below the ice machine.
2-12
Part No. 80-1214-3
Revised 8/2003
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Section 2
Installation Instructions
C. SUCTION LINE OIL TRAPS
Service Loop
A service loop in the line set permits easy access to the
ice machine for cleaning and service.
Caution
!
Do not form unwanted traps in refrigeration lines.
Never coil excess refrigeration tubing.
•
The supplied service loop is an installation
requirement.
0 to 20 feet (0 to 6.1 m) Rise: The ice machine head
section has one oil trap built in which allows for a
maximum condenser rise of 20 feet (6.1 m) without
additional traps in the suction line.
•
•
A service loop is not considered an oil trap.
The service loop is not included when calculating
length, rise or drop of the tubing run.
21 to 35 feet (6.4 to 10.7 m) Rise: The suction line
requires an additional Oil Trap (“S” type) to be installed.
Install the trap as close as possible to midpoint between
the ice machine head section and remote condensing
unit. S-Trap Kits are available from Manitowoc (refer to
chart).
•
Do not use hard rigid copper for the service loop.
Caution
!
If a line set has a rise followed by a drop, another rise
cannot be made. Likewise, if a line set has a drop
followed by a rise, another drop cannot be made.
Step 3 Lengthening or Reducing Line Set Lengths
Caution
!
Do not form unwanted traps in refrigeration lines.
Never coil excess refrigeration tubing.
21’ OR MORE
RISE
ADDITIONAL
TRAP KIT
REQUIRED
When the line set required shortening or lengthening, do
so before connecting the line set to the ice machine
head section or the remote condensing unit.
Continued on Next Page...
SV1751
SV1760
Manitowoc S-Trap Kit
S-Trap Kit
Number
Model
Tubing Size
3/4 inch
QF2200
QF2300
K00166
(19.1 mm)
Part No. 80-1214-3
2-13
Revised 8/2003
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Installation Instructions
Section 2
Step 4 Connecting the line set.
Connect The Line Set To The Remote Condensing
Unit
To prevent oxidation of the copper, purge line set and
condensing unit with dry nitrogen while brazing.
The compressor oil rapidly absorbs moisture. Be
prepared to complete line set installation and start your
evacuation process in order to minimize the time the
compressor is exposed to the atmosphere. (Maximum
amount of time the system can be exposed to the
atmosphere is 15 minutes).
Connect The Line Set To The Ice Machine Head
Section
!
Warning
The ice machine head section contains refrigerant
charge. The ice machine head section contains three
(3) refrigeration valves that must remain closed until
proper installation of the line sets is completed.
The line set can be routed for entry through the front or
left side of the condensing unit.
•
•
Remove knockout for preferred location.
Insert supplied plastic bushings in knockout holes to
prevent tubing from contacting sheet metal.
The line set shut off valves at the back of the ice
machine must remain closed and be protected from heat
during the brazing process. Wrap the valves in a wet rag
or other type of heat sink prior to brazing. Cool braze
joint with water immediately after brazing to prevent heat
migration to the valve.
•
•
Use the supplied 90° elbows to route tubing.
Cut the tubing ends of the suction and liquid lines
and braze the line sets to the condensing unit.
SUCTION
FILTER
SUCTION
LINE
VALVES MUST REMAIN
CLOSED AND BE
PROTECTED FROM
HEAT WHEN BRAZING
(WRAP WITH WET RAG)
MINIMIZE THE TIME THE REFRIGERATION
SYSTEM IS EXPOSED TO THE ATMOSPHERE
(15 MINUTES MAXIMUM)
SV2100
SV1757
!
Warning
The condensing unit ships from the factory
pressurized with a 50/50 mixture of nitrogen/helium.
Bleed off pressure from both suction and liquid line
access ports prior to cutting into refrigeration lines.
2-14
Part No. 80-1214-3
Revised 8/2003
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Section 2
Installation Instructions
Step 5 Pressure Test and Evacuate The Line Set
and Remote Condensing Unit
Step 6 Open The Valves Prior To Starting The Ice
Machine.
Schrader valve core removal tools that allow for removal
and installation of the valve cores without removing
manifold gauge set hoses are recommended to
decrease the evacuation time.
A. Slowly backseat (open-turn counterclockwise)
the suction line shut off valve.
B. Slowly backseat (open-turn counterclockwise)
the liquid line shut off valve.
Leave the line set shut off valves closed (front seated).
Pressure test the line sets and remote condensing unit
with 150 psig of dry nitrogen. Add nitrogen at the line set
shut off valves located at the back of the ice machine.
Complete the pressure test, verify no leaks are present
and remove the nitrogen from the system before
connecting the vacuum pump. Connect a vacuum pump
to both of the line set shut off valves located at the back
of the ice machine head section. Evacuate to 500
microns (or less). To completely evacuate the Remote
condensing unit, continue the evacuation for 30 minutes
after reaching the 500 micron point.
C. Slowly backseat (open-turn counterclockwise)
the receiver service valve.
CONNECT
VACUUM PUMP TO
LINE SET SHUT
OFF VALVES
USE ALLEN WRENCH TO OPEN
(TURN COUNTERCLOCKWISE)
LIQUID AND SUCTION LINE
SHUT-OFF VALVES
SV1784
SV1757
OPEN SUCTION AND LIQUID LINE SHUT OFF VALVES
If required, the line set and condensing unit can be
evacuated from the schrader valves located in the
remote condensing unit. Schrader valve core removal
tools (that allow for putting the cores back in without
removing vacuum pump hoses) must be used if
evacuating from the condensing unit side.
Isolate the vacuum pump from the line set shut off valves
and/or condensing unit access ports prior to proceeding.
Open refrigeration system shut off valves.
The suction line, liquid line and receiver service valves
are closed during shipment and installation.
ALTERNATE CONNECTIONS AT
CONDENSING UNIT SCHRADER VALVES
SV2100
Part No. 80-1214-3
2-15
Revised 8/2003
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Installation Instructions
Section 2
Verify O-ring in schrader valve caps are intact and
reinstall on shut off valves to prevent refrigerant leakage.
Replace shut off valve access caps and torque to the
following specifications.
Step 7 Leak Check The Refrigeration System
Leak check the new line set connections at the ice
machine head section, condensing unit and S trap as
well as all factory joints throughout the entire system.
Disconnect power to the remote condensing unit. Place
the ICE/OFF/CLEAN toggle switch into the ICE position.
This allows the low side and high side pressures to
equalize. Place the ICE/OFF/CLEAN toggle switch in the
OFF position. Connect power to the remote condensing
unit and allow system to pump down.
Torque Value’s
Stem
18-20 ft. lbs.
12-15 ft. lbs.
1.5-3 in. lbs.
Caps
Schrader Core
Step 8 Insulation Requirements
Replace cap on receiver service valve and tighten.
To prevent condensation the entire suction line including
the shut-off valve must be insulated. All insulation must
be airtight and sealed at both ends.
TURN
COUNTERCLOCKWISE
The following insulation requirements prevent
condensation at 90°F (32.2°C) ambient 70% Relative
Humidity. If higher humidity is expected, increase
insulation thickness.
The entire line set, including the suction service valve
located on the back of the ice machine requires:
Min. Insulation
RECEIVER SERVICE VALVE CAP
(TURN COUNTERCLOCKWISE
Suction Line
Liquid Line
Thickness
TO REMOVE)
SV1756
1/2”(13mm)
Suction Line
Open Receiver Service Valve
3/4 inch
1/2 inch
There is a liquid line solenoid valve at the outlet of the
receiver; refrigerant will not flow to the condensing unit
until the ice machine head section is started. Connect
power to both the ice machine head section and the
Remote condensing unit. Place the ICE/OFF/CLEAN
toggle switch into the ICE position, this will allow
refrigerant to enter the line set and condensing unit.
(19.1 mm)
(12.7 mm)
1/4” (7mm)
Liquid Line
Important
To prevent condensation the entire suction line
including the shut off valve must be insulated. All
insulation must be airtight and sealed at both ends.
The minimum requirements are for conditions at or
below 70% humidity and 90°F (32.2°C) ambient.
When higher humidity will be experienced, insulation
wall thickness will need to be increased.
Important
All refrigeration valve caps must be reinstalled to
prevent future refrigeration leaks.
2-16
Part No. 80-1214-3
Revised 8/2003
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Section 2
Installation Instructions
Suction Shut Off Valve Insulation
The pre-formed suction shut-off valve insulation is
located in the plastic bag taped to the water curtain.
A. Verify valve and schrader caps are tightened to
specifications (see Step 6).
PRE-FORMED
INSULATION
TIGHTEN VALVE CAPS TO
SV3084
SPECIFICATIONS
B. Place insulation over schrader valve cap and left
side of valve. Position the tab between the
mounting bracket and rear panel.
PLACE TAB BETWEEN
VALVE BODY AND PANEL
SV3085
C. Fold insulation and hold against right hand side
of valve while securing with electrical tape. Seal
the line set insulation to the shut off valve
insulation with electrical tape.
FOLD INSULATION OVER
RIGHT SIDE OF VALVE AND
SECURE WITH
ELECTRICAL TAPE
SV3086
Part No. 80-1214-3
2-17
Revised 8/2003
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Installation Instructions
Section 2
THIS PAGE INTENTIONALLY LEFT BLANK
2-18
Part No. 80-1214-3
Revised 8/2003
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Section 3
Ice Machine Operation
Component Identification
ICE MACHINE HEAD SECTION
QC700/QF800
QUARTER TURN
THUMBSCREWS
WATER LEVEL
PROBE
CLEANING
SOLUTION FILL
HOLE
CONDENSER
AIR FILTER
DUMP VALVE
WATER FLOAT
VALVE COIL
CONDENSER FAN
MOTOR
POTABLE
WATER
INLET
ICE CHUTE
ICE/OFF/CLEAN
TOGGLE SWITCH
WATER INLET QUICK
DISCONNECT
FITTING
POTABLE WATER
DRAIN
GEARMOTOR
SV2019
SV2022
QF400
WATER LEVEL
PROBES
WATER FLOAT
VALVE COIL
WATER INLET QUICK
DISCONNECT
EVAPORATOR
ICE
CHUTE
CONTROL
BOX
DUMP
VALVE
POTABLE
WATER DRAIN
GEAR MOTOR /
GEAR BOX
ASSEMBLY
ICE/OFF/CLEAN
TOGGLE SWITCH
AIR COOLED
CONDENSER
CONDESER
FAN/ MOTOR
SV2053
SV2044
Part Number 80-1214-3
3-1
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Ice Machine Operation
Section 3
QF2300
CLEANING
SOLUTION FILL
HOLE
ICE CHUTE
RETAINING
CLAMP
CONDENSER
FAN MOTOR
AIR
CONDENSER
ELECTRICAL
COMPARTMENT
EVAPORATOR
ICE/OFF/
CLEAN
TOGGLE
SWITCH
ICE CHUTE
GEAT MOTOR/
GEAR BOX
ASSEMBLY
SUCTION
FILTER
HEAD
PRESSURE
CONTROL
VALVE
WATER LEVEL
PROBES
FLOAT VALVE
COMPRESSOR
ICE CHUTE
ELBOW
SV2100
RFC2385 Remote Condensing Unit
DUMP
VALVE
SV2102
CLEANING
SOLUTION
FILL HOLE
WATER
RESERVOIR
3-2
Part Number 80-1214-3
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Section 3
Ice Machine Operation
Operational Checks
GENERAL
WATER LEVEL CHECK
Manitowoc ice machines are factory-operated and
adjusted before shipment. Normally, a newly installed ice
machine does not require any adjustment.
The float valve maintains the correct water level. The
water level must allow the water level probes to maintain
water contact throughout the freeze cycle. The water
level is factory set and normally will not require
adjustment. Check the water level during the freeze
cycle. The water level is correct if the water level
indicator light is energized (compressor is running) and
no water is entering the overflow tube. (Check for
overflow water exiting the ice machine drain line at the
floor drain).
To ensure proper operation, always follow the
Operational Checks:
•
•
•
when starting the ice machine for the first time
after a prolonged out of service period
after cleaning and sanitizing
NOTE: Routine adjustments and maintenance
procedures outlined in this manual are not covered by
the warranty.
If adjustments are necessary:
A. Rotate float clockwise to increase water level
B. Rotate float counterclockwise to decrease water
level
C. Verify the outlet for the water float valve is at a
20 to 30 degree angle to prevent contact with
the float.
WATER FLOAT
VALVE SOLENOID
COIL
VERIFY WATER
OUTLET DOES
NOT POINT
STRAIGHT
DOWN IT MAY
INTERFERE
WITH FLOAT
WATER FLOAT
VALVE
WATER LEVEL
PROBE
WATER FLOAT
ROTATE TO
ADJUST WATER
LEVEL
SV2029
Part Number 80-1214-3
3-3
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Ice Machine Operation
Section 3
Interior Cleaning and Sanitizing
GENERAL
You are responsible for maintaining the ice machine in
accordance with the instructions in this manual.
Maintenance procedures are not covered by the
warranty.
Manitowoc Ice Machines have three separate cleaning
procedures.
Preventative Maintenance Cleaning Procedure
Procedure starts on Page 3-6
Clean and sanitize the ice machine every six months for
efficient operation. If the ice machine requires more
frequent cleaning and sanitizing, consult a qualified
service company to test the water quality and
recommend appropriate water treatment. An extremely
dirty ice machine must be taken apart for cleaning and
sanitizing.
Perform this procedure as required for your water
conditions.
•
Allows cleaning the ice machine without removing all
of the ice from the bin
•
Removes mineral deposits from areas or surfaces
that are in direct contact with water during the freeze
cycle (reservoir, evaporator, auger, drain lines).
Manitowoc Ice Machine Cleaner and Sanitizer are the
only products approved for use in Manitowoc ice
machines.
Cleaning/Sanitizing Procedure
Procedure starts on Page 3-8
This procedure must be performed a minimum of once
every six months.
Caution
!
Use only Manitowoc approved Ice Machine Cleaner
(part number 000000084) and Sanitizer (part
number 94-0565-3). It is a violation of Federal law to
use these solutions in a manner inconsistent with
their labeling. Read and understand all labels
printed on bottles before use.
•
•
All ice must be removed from the bin
The ice machine and bin must be disassembled
cleaned and sanitized
•
•
The ice machine produces ice with the cleaner and
sanitizer solutions
All ice produced during the cleaning and sanitizing
procedure must be discarded
Caution
!
Heavily Scaled Cleaning Procedure
Procedure starts on Page 3-10
Do not mix Cleaner and Sanitizer solutions together.
It is a violation of Federal law to use these solutions
in a manner inconsistent with their labeling.
Perform this procedure if you have some or all of these
symptoms.
•
Grinding, popping or squealing noises from the
evaporator
!
Warning
Wear rubber gloves and safety goggles (and/or face
shield) when handling ice machine Cleaner or
Sanitizer.
•
•
Grinding noise from gearbox
Ice machine trips speed sensor
NOTE: A Cleaning/Sanitizing Procedure must be
performed after this procedure.
EXTERIOR CLEANING
Remove dust and dirt off exterior surfaces with mild
household dish-washing detergent and warm water.
Wipe dry with a clean, soft cloth.
3-4
Part Number 80-1214-3
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Section 3
Ice Machine Operation
CLEANING THE CONDENSER
3. Shine a flashlight through the condenser to check
for dirt between the fins. If dirt remains:
A. Blow compressed air through the condenser fins
from the inside. Be careful not to bend the fan
blades.
!
Warning
Disconnect electric power to the ice machine and
the remote condenser at the electric service switch
before cleaning the condenser.
B. Use a commercial condenser coil cleaner.
Follow the directions and cautions supplied with
the cleaner.
Air-Cooled Condenser
(SELF-CONTAINED AND REMOTE MODELS)
4. Straighten any bent condenser fins with a fin comb.
A dirty condenser restricts airflow, resulting in
excessively high operating temperatures. This reduces
ice production and shortens component life. Clean the
condenser at least every six months. Follow the steps
below.
CONDENSER
FIN COMB
Caution
!
The condenser fins are sharp. Use care when
cleaning them.
1. The washable aluminum filter on self-contained ice
machines is designed to catch dust, dirt, lint and
grease. This helps keep the condenser clean. Clean
the filter with a mild soap and water solution.
“COMB”
DOWN
ONLY
SV1515
Straighten Bent Condenser Fins
5. Carefully wipe off the fan blades and motor with a
soft cloth. Do not bend the fan blades. If the fan
blades are excessively dirty, wash with warm, soapy
water and rinse thoroughly.
Caution
!
If you are cleaning the condenser fan blades with
water, cover the fan motor to prevent water
damage.
AIR FILTER
SV1608
Self-Contained Air-Cooled Filter
2. Clean the outside of the condenser (bottom of a
remote condenser) with a soft brush or a vacuum
with a brush attachment. Clean from top to bottom,
not side to side. Be careful not to bend the
condenser fins.
Part Number 80-1214-3
3-5
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Ice Machine Operation
Section 3
MANITOWOC’S CLEANING TECHNOLOGY
Manitowoc Flake/Chiplet Ice Machines include technology that allows the initiation and completion of a cleaning or
sanitizing cycle at the flip of a switch. This cycle will permit cleaning of all surfaces that come in contact with the water
distribution system. Periodic maintenance must be performed that includes sanitizing the bin and adjacent surface
areas, which are not contacted by the water distribution system.
Depending on local water conditions Manitowoc recommends initiating preventative maintenance cleaning
procedures between the 6 month cleanings.
This preventive maintenance removes mineral build-up from the evaporator, which results in peak efficiency and
lower operating costs.
This technology will also allow initiation and completion of a clean or sanitize cycle, after which the ice machine
automatically starts ice making again.
Refer to the cleaning/sanitizing procedure for complete details.
PREVENTATIVE MAINTENANCE CLEANING PROCEDURE QC700/QF800/QF2300
Use Ice machine cleaner part number 000000084
only.This cleaner is used to remove lime scale or other
mineral deposits. It is not used to remove algae or slime.
Refer to “Cleaning/Sanitizing Procedure” for removal of
algae and slime. To initiate a cleaning cycle using
Manitowoc’s Cleaning Technology use the following
procedure.
Step 4 .The ice machine will automatically time out four
flush and rinse cycles, and then stop. The flush light
remains energized until the toggle switch is moved to the
OFF position. This entire cycle lasts approximately 11
minutes.
Amount of Cleaner
Model
Part Number 000000084
Step 1 Remove front and top covers and set the toggle
QC700/QF800/QF2300
3 ounces (90 ml)
switch to the OFF position.
NOTE: Periodic cleaning must be performed on adjacent
surface areas not contacted by the water distribution
system.
Step 2 To start a cleaning cycle, move the toggle switch
to the CLEAN position. Water will flow through the water
dump valve and down the drain. The flush, gear motor,
speed, dump valve and water solenoid lights will
energize to indicate the ice machine is in the clean
mode.
Manitowoc recommends disassembling, cleaning and
sanitizing the ice machine and bin/dispenser every six
months.
Step 3 Remove the 1 1/2” yellow plug from the top
cover of the water reservoir. Wait about one minute or
until the dump valve light de-energizes, then add the
proper amount of Manitowoc Ice Machine Cleaner and
re-install plug.
NOTE: The ice machine may be set to start and finish a
cleaning procedure, and then automatically start ice
making again. Wait about one minute into the cleaning
cycle (until the dump valve light de-energizes), then
move the switch from CLEAN to ICE position.
When the cleaning cycle is complete, the flush light will
de-energize and ice making will start automatically
3-6
Part Number 80-1214-3
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Section 3
Ice Machine Operation
PREVENTATIVE MAINTENANCE CLEANING PROCEDURE QF400
Use Ice machine cleaner part number 000000084 only.
This cleaner is used to remove lime scale or other
mineral deposits. It is not used to remove algae or slime.
Refer to “Cleaning/Sanitizing Procedure” for removal of
algae and slime. To initiate a cleaning cycle using
Manitowoc’s Cleaning Technology use the following
procedure.
Step 4 The ice machine will automatically time out four
flush and rinse cycles, and then stop. The flush light
remains energized until the toggle switch is moved to the
OFF position. This entire cycle lasts approximately 11
minutes.
NOTE: Periodic cleaning must be performed on adjacent
surface areas not contacted by the water distribution
system.
Step 1 Set the toggle switch to the OFF position. Open
the bin door and remove the 2 thumbscrews and white
plastic panel.
Manitowoc recommends disassembling, cleaning and
sanitizing the ice machine and bin/dispenser every six
months.
Step 2 To start a cleaning cycle, move the toggle switch
to the CLEAN position. Water will flow through the water
dump valve and down the drain. The flush, gear motor,
speed, dump valve and water solenoid lights will
energize to indicate the ice machine is in the clean
mode.
NOTE: The ice machine may be set to start and finish a
cleaning procedure, and then automatically start ice
making again. Wait about one minute into the cleaning
cycle (until the dump valve light de-energizes), then
move the switch from CLEAN to ICE position.
Step 3 Wait about one minute or until the dump valve
light de-energizes. Lift the front cover on the water
reservoir and add the proper amount of Manitowoc Ice
Machine Cleaner.
When the cleaning cycle is complete, the flush light will
de-energize and ice making will start automatically
Amount of Cleaner
Model
Part Number 000000084
QF400
3 ounces (90 ml)
Part Number 80-1214-3
3-7
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Ice Machine Operation
Section 3
CLEANING/SANITIZING PROCEDURE QC700/QF800/QF2300
Use Ice machine cleaner part number 000000084.
Use Ice machine sanitizer part number 94-0565-3.
Step 17 Remove the water level probes from the top
cover and with the wires attached, place the water level
probes (stand upright) inside the water reservoir.
Step 1 Remove front and top covers and set the toggle
switch to the OFF position.
Step 18 Refer to chart and premix water and sanitizer.
Amount of Water
Amount of Sanitizer
Step 2 Remove all ice from the bin.
6 Gallons (23L) Cool Water
4 ounces (120 ml)
Step 3 Disconnect water supply line at float valve quick
disconnect by depressing stainless steel lever.
Step 19 To start sanitizing, move the toggle switch to
the ICE position.
Step 4 Remove the top cover from water reservoir.
Step 20 Wait about 45 seconds until the dump valve
light de-energizes. Fill the evaporator and reservoir with
sanitizer/water solution. The ice machine will make ice
with the sanitizer/water solution and deposit the ice in
the bin. Add the remaining sanitizer/water solution when
the water level in the reservoir drops.
Step 5 Remove the water level probes from the top
cover and with the wires attached, place the water level
probes (stand upright) inside the water reservoir.
Step 6 Follow the chart and premix cleaner and water.
Amount of Cleaner
Amount of Water
Part Number 000000084
NOTE: Do not allow the water level to drop below the
water level probes. The ice machine will discontinue the
cycle when the water level probes open (lose water
contact) for more than 30 seconds.
1 gallon (3.8 Liters)
3 ounces (90 ml)
Step 7 To start cleaning, move the toggle switch to the
ICE position.
Step 21 After all of the sanitizer/water solution has
been added to the reservoir, reconnect the water supply
line at the float valve quick disconnect.
Continue the sanitize cycle for 10 minutes to remove the
sanitizing solution from the water circuit.
Step 8 Wait about 45 seconds until the dump valve light
de-energizes. Fill the evaporator and reservoir with
cleaning solution. The ice machine will make ice with the
cleaning solution and deposit the ice in the bin. Add the
remaining cleaner/water solution when the water level in
the reservoir drops.
Step 22 Place the toggle switch in the Off position, then
disassemble the ice machine and hand sanitize all parts
(refer to disassembly for cleaning/sanitizing for
procedure).
NOTE: Do not allow the water level to drop below the
water level probes. The ice machine will discontinue the
cycle when the water level probes open (lose water
contact) for more than 30 seconds.
Step 23 Remove and discard all ice produced in the
sanitizing process, then reassemble the ice machine
and reconnect the water supply.
Step 9 After all of the cleaner/water solution has been
added reconnect the water supply line to the float valve.
Continue the freeze cycle for 10 minutes to remove the
cleaning solution from the water circuit.
Step 10 Place the toggle switch in the Off position.
Step 11 Disassemble the ice machine and hand clean
all parts (refer to disassembly for cleaning/sanitizing).
Step 12 Hand sanitize all parts (refer to disassembly for
cleaning/sanitizing for procedure).
Step 13 Remove and discard all ice produced during
the cleaning process.
Step 14 Reassemble ice machine.
Step 15 Disconnect water supply line at float valve
quick disconnect by depressing stainless steel lever.
Step 16 Remove the top cover from water reservoir.
3-8
Part Number 80-1214-3
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Section 3
Ice Machine Operation
CLEANING/SANITIZING PROCEDURE QF400
Use Ice machine cleaner part number 000000084.
Use Ice machine sanitizer part number 94-0565-3.
Step 17 Remove the water level probes from the top
cover and with the wires attached, place the water level
probes (stand upright) inside the water reservoir.
Step 1 Set the toggle switch to the OFF position and
remove all ice from the bin.
Step 18 Refer to chart and premix water and sanitizer.
Amount of Water
Amount of Sanitizer
Step 2 Remove the 2 thumbscrews and white plastic
panel.
6 Gallons (23L) Cool Water
4 ounces (120 ml)
Step 3 Disconnect water supply line at float valve quick
disconnect by depressing stainless steel lever.
Step 19 To start sanitizing, move the toggle switch to
the ICE position.
Step 4 Remove the top cover from water reservoir.
Step 20 Wait about 45 seconds until the dump valve
light de-energizes. Fill the evaporator and reservoir with
sanitizer/water solution. The ice machine will make ice
with the sanitizer/water solution and deposit the ice in
the bin. Add the remaining sanitizer/water solution when
the water level in the reservoir drops.
Step 5 Remove the water level probes from the top
cover and with the wires attached, place the water level
probes (stand upright) inside the water reservoir.
Step 6 Follow the chart and premix cleaner and water.
Amount of Cleaner
Amount of Water
NOTE: Do not allow the water level to drop below the
water level probes. The ice machine will discontinue the
cycle when the water level probes open (lose water
contact) for more than 30 seconds.
Part Number 000000084
1 gallon (3.8 Liters)
3 ounces (90 ml)
Step 7 To start cleaning, move the toggle switch to the
ICE position.
Step 21 After all of the sanitizer/water solution has
been added to the reservoir, reconnect the water supply
line at the float valve quick disconnect.
Continue the sanitize cycle for 10 minutes to remove the
sanitizing solution from the water circuit.
Step 8 Wait about 45 seconds until the dump valve light
de-energizes. Fill the evaporator and reservoir with
cleaning solution. The ice machine will make ice with the
cleaning solution and deposit the ice in the bin. Add the
remaining cleaner/water solution when the water level in
the reservoir drops.
Step 22 Place the toggle switch in the Off position, then
disassemble the ice machine and hand sanitize all parts
(refer to disassembly for cleaning/sanitizing for
procedure).
NOTE: Do not allow the water level to drop below the
water level probes. The ice machine will discontinue the
cycle when the water level probes open (lose water
contact) for more than 30 seconds.
Step 23 Remove and discard all ice produced in the
sanitizing process, then reassemble the ice machine
and reconnect the water supply.
Step 9 After all of the cleaner/water solution has been
added reconnect the water supply line to the float valve.
Continue the freeze cycle for 10 minutes to remove the
cleaning solution from the water circuit.
Step 10 Place the toggle switch in the Off position.
Step 11 Disassemble the ice machine and hand clean
all parts (refer to disassembly for cleaning/sanitizing).
Step 12 Hand sanitize all parts (refer to disassembly for
cleaning/sanitizing for procedure).
Step 13 Remove and discard all ice produced during
the cleaning process.
Step 14 Reassemble ice machine.
Step 15 Disconnect water supply line at float valve
quick disconnect by depressing stainless steel lever.
Step 16 Remove the top cover from water reservoir.
Part Number 80-1214-3
3-9
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Ice Machine Operation
Section 3
PROCEDURE TO CLEAN HEAVILY SCALED FLAKE/CHIPLET ICE MACHINES QF400/QC700/QF800/QF2300
Step 1 Remove front and top covers, set the toggle
switch to the OFF position.Remove all ice from the bin.
Step 5 Remove all water from the evaporator and water
reservoir. Start an ice making cycle by moving the toggle
switch to the ICE position. Water will flow through the
water dump valve and down the drain for 45 seconds.
After 45 seconds move the toggle switch to the OFF
position. Remove the plug from the top cover of the
water reservoir. Add the entire cleaner/water solution
and re-install the plug.
Step 2 Remove front and top covers and set the toggle
switch to the OFF position.
Step 3 Disconnect water supply line at float valve quick
disconnect by depressing stainless steel lever.
Step 4 Refer to chart below:
Premix cleaner with lukewarm water in a non-
metallic container.
Leave the cleaner/water solution in the evaporator
for a minimum of 4 hours.
Mix Cleaner and Water
Step 6 Move the toggle switch from OFF to ICE. The
cleaner/water solution will flow through the water dump
valve and down the drain for 45 seconds.
Use Ice machine cleaner
part number 000000084
Water
Model
Reservoir
Capacity
only
Step 7 Move the toggle switch to the OFF position,
then follow the standard cleaning and sanitizing
procedures for the model ice machine you are cleaning.
Cleaner
Water
QF400
48 oz (1.4 L)
48 oz (1.4 L)
72 oz (2.1 L)
32 oz (0.94 L)
32 oz (0.94 L)
48 oz (1.4 L)
16 oz (0.5 L)
QF800/
QC700
16 oz (0.5 L)
24 oz (0.7 L)
QF2300
3-10
Part Number 80-1214-3
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Section 3
Ice Machine Operation
REMOVAL OF PARTS FOR CLEANING/SANITIZING
3. Soak the removed part(s) in a properly mixed
solution of cleaner and water.
!
Warning
Disconnect electric power to the ice machine at the
electric switch box before proceeding.
Solution Type
Water
Mixed With
Cleaner
1 gal. (4 l)
16 oz (500 ml) cleaner
Part Number 000000084
!
Warning
4. Use a soft-bristle brush or sponge (NOT a wire
brush) to carefully clean the parts.
Wear rubber gloves and safety goggles (and/or face
shield) when handling Ice Machine Cleaner or
Sanitizer.
5. Use the solution and a brush or sponge to clean all
disassembled components and the inside of the bin.
6. Rinse all cleaned parts with clear water.
7. Mix a solution of sanitizer and water.
Caution
!
Do not mix Cleaner and Sanitizer solutions together.
It is a violation of Federal law to use these solutions
in a manner inconsistent with their labeling.
Solution Type
Water
Mixed With
Sanitizer
3 gal. (11.4 l)
2 oz (60 ml) sanitizer
Part Number 94-0565-3
1. Turn off the water supply to the ice machine at the
water service valve or disconnect water supply line
at float valve quick disconnect by depressing
stainless steel lever and pulling the fitting off.
8. Soak the parts in the sanitizer /water solution for 10
minutes. Use the sanitizer/water solution and a
sponge to sanitize all removed components and the
inside of the bin. Do not rinse the sanitized parts.
2. Remove the components listed on the following
pages for cleaning and sanitizing.
9. Install the removed parts in the ice machine.
10. Turn on the water and electrical supply.
Part Number 80-1214-3
3-11
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Ice Machine Operation
Section 3
Water Level Probe Removal
Water Reservoir Cover Removal
QF400/QC700/QF800/QF2300
1. Place the toggle switch in the OFF position, turn off
the water supply and disconnect electrical power to
the ice machine.
Water Level Probe Removal
1. Place the toggle switch in the OFF position, turn off the
water supply and disconnect electrical power to the ice
machine.
2. Remove water level probes.
3. Remove water float valve coil.
2. Disconnect water supply line at float valve quick disconnect
by depressing stainless steel lever.
4. Depress coil and rotate 1/4 turn counterclockwise.
5. With coil wires attached, lift coil off enclosure tube.
3. Pull up on water level probes to remove.
4. Disconnect wires from water level probes or control board.
6. QF0800/QC0700 ONLY Rotate quarter turn
fasteners counterclockwise.
WATER LEVEL
PROBES
7. QF0800/QC0700 ONLY Remove cotter key and pin
from ice chute.
8. Remove top cover from float reservoir.
4
5
3
SV2043
QF400
6
WATER LEVEL
PROBES
SV2030
SV2028
QC700/QF800 Shown
QC700/QF800
WATER LEVEL
PROBES
SV1791
QF2300
3-12
Part Number 80-1214-3
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Section 3
Ice Machine Operation
Water Reservoir Cover Removal
Float Valve Removal
QF2300
1. Place the toggle switch in the OFF position, turn off
the water supply and disconnect electrical power to
the ice machine.
1. Place the toggle switch in the OFF position, turn off
the water supply and disconnect electrical power to
the ice machine.
2. Disconnect water supply line at float valve quick
disconnect by depressing stainless steel lever.
2. Remove water level probes.
3. Remove water float valve coil.
3. Remove water float valve coil.
4. Depress coil and rotate 1/4 turn counterclockwise.
5. With coil wires attached, lift coil off enclosure tube.
4. Depress coil and rotate 1/4 turn counterclockwise.
5. With coil wires attached, lift coil off enclosure tube.
6. Remove top cover from float reservoir.
6. QF0800/QC0700/QF2300 ONLY Rotate quarter turn
fasteners counterclockwise.
7. QF0800/QC0700 ONLY Remove cotter key and pin
from ice chute.
3, 4, 5
2
8. Remove top cover from float reservoir.
9. Lift float valve out of float reservoir.
FLOAT VALVE
6
SV1791
QF2300 Shown
SV2015
QC700/QF800 Shown
Part Number 80-1214-3
3-13
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Ice Machine Operation
Section 3
Water Reservoir Removal
Ice Diverter Removal
1. Place the toggle switch in the OFF position and turn
off the water supply to the ice machine at the water
service valve.
QF0400
1. Place the toggle switch in the OFF position, turn off the
water supply and disconnect electrical power to the ice
machine.
2. Disconnect water supply line at float valve quick
disconnect by depressing stainless steel lever.
2. Remove thumbscrews and lift panel forward.
3. Remove bin level sensor from white plastic panel.
4. Remove ice diverter from bin.
3. Place the toggle switch in the ICE position. The dump
valve will open and the float reservoir will empty.
2
3
4. After the reservoir is empty, place the toggle switch
in the OFF position and disconnect power to the ice
machine at the service disconnect.
5. Remove water float valve coil.
A. Depress coil and rotate 1/4 turn
counterclockwise.
B. With coil wires attached, lift coil off enclosure
tube.
5. QF0800/QC0700 ONLY Rotate quarter turn
fasteners counterclockwise.
6. QF0800/QC0700 ONLY Remove cotter key and pin
from ice chute.
7. Remove top cover from float reservoir.
8. Lift float valve out of float reservoir.
9. Disconnect the drain lines from reservoir.
10. Lift reservoir off of evaporator assembly.
WATER
RESERVOIR
SV2052
EVAPORATOR
ASSEMBLY
SV2024
QC700/QF800 Shown
3-14
Part Number 80-1214-3
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Section 3
Ice Machine Operation
Ice Chute Removal
QC700/QF800
QF2300
1. Follow steps to remove float reservoir.
1. Place the toggle switch in the OFF position, turn off
the water supply and disconnect electrical power to
the ice machine.
2. The ice chute and ice chute grommet will be
removed as a unit. Pull forward on the top of the ice
chute, and slide the ice chute and grommet off the
end of the evaporator spout.
2. Remove ice chute retaining clamp from top of
evaporator.
3. Remove evaporator spout insulation.
4. Lift ice chute out of the base.
3. Remove vinyl hose from ice chute spout.
4. Follow steps to remove water reservoir.
5. Remove insulation from the bottom of the ice chute.
5. The ice chute elbow and the ice chute will be
removed separately. Support the ice chute and pull
forward on the elbow to remove.
6. Remove bin level sensor (stainless steel plate) from
ice chute. (Bin level sensor can be disconnected
from the control board for complete removal from
the ice machine.)
6. Lift ice chute out of the base, tip bottom forward and
remove bin level sensor (stainless steel plate) from
the top of the ice chute. (Bin level sensor can be
disconnected from the control board for complete
removal from the ice machine.)
NOTE: Clean and sanitize the base and all ice chute
components before reinstalling.
6
7. Remove insulation from ice chute elbow and ice
chute base.
3
2
8. Remove evaporator spout o-ring.
NOTE: Clean and sanitize the base, spout and all ice
chute components before re-installing.
4
2
4
5
5
8
3
SV2011
6
7
SV1787
Part Number 80-1214-3
3-15
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Ice Machine Operation
Section 3
Bin Door Removal
Cabinet Removal
QF0400
QF0400
Door removal allows easier access for cleaning and
sanitizing.
1. Remove all ice from bin and disconnect power.
2. Remove thumbscrews and evaporator panel.
1. Disconnect the electrical power to the ice machine
and remove ice from bin.
3. Remove three screws from the bottom of the left and
right side of cabinet.
2. Grasp the rear of the bin door and pull bin door
forward approximately 5”.
4. Remove nine screws from back panel.
5. Disconnect drain line clamp.
3. Slide bin door to the rear while applying upward
pressure (the rear door pins will ride up into the track
slot).
6. Slide cabinet forward and remove from base.
4. Slide the rear door pins off the end and then below
the door track. Slide bin door forward allowing the
back of the door to lower into the bin. Continue
forward with the bin door until the front pins bottom
out in the track.
5. Lift the right side of the bin door until the front pin
clears the track.
6. Remove door from bin.
Remove 3 Screws
From Each Side
SV2044
Press Down to
Release Door
Track Slot
Slide Door Forward
RemoveBack
Panel screws
SV2068
SV2069
3-16
Part Number 80-1214-3
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Section 3
Ice Machine Operation
Water Dump Valve
Important
The water dump valve normally does not require
removal for cleaning. To determine if removal is
necessary:
The plunger and the inside of the enclosing tube
must be completely dry before assembly.
1. Locate the water dump valve.
2. Set the toggle switch to ICE.
NOTE: During cleaning, do not stretch or damage the
spring.
3. While the ice machine is in the freeze mode, check
the water trough to determine if the dump valve is
leaking. If there is no or little water in the water
trough (during the freeze cycle) the dump valve is
leaking.
6. Remove the tubing from the dump valve by twisting
the clamps off.
7. Remove the valve body, twist off.
A. If the dump valve is leaking, remove,
disassemble and clean it.
COIL
SPRING
B. If the dump valve is not leaking, do not remove
it. Instead, follow the “Ice Machine Cleaning
Procedure”.
Follow the procedure below to remove the dump valve.
PLUNGER
NYLON GASKET
!
Warning
Disconnect the electric power to the ice machine at
the electric service switch box and turn off the water
supply before proceeding.
DIAPHRAM
1. If so equipped, remove the water dump valve shield
from its mounting bracket.
2. Leaving the wires attached, twist coil and rotate it
counter-clockwise1/4 turn.
MOUNTING BRACKET
3. Lift the coil assembly off the valve body.
4. Remove the spring, plunger, and nylon gasket from
the valve body.
5.
NOTE: At this point, the water dump valve can easily be
cleaned. If complete removal is desired, continue with
step 5.
VALVE BODY
Dump Valve Disassembly
Part Number 80-1214-3
3-17
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Ice Machine Operation
Section 3
WATER COOLED CONDENSING UNIT
Removal from Service/Winterization
1. Perform steps 1-6 in previous column.
GENERAL
2. Disconnect the incoming water and drain lines from
the water-cooled condenser.
Special precautions must be taken if the ice machine
head section is to be removed from service for an
extended period of time or exposed to ambient
temperatures of 32°F (0°C) or below.
3. Insert a large screwdriver between the bottom spring
coils of the water regulating valve. Pry upward to
open the valve.
Caution
!
If water is allowed to remain in the ice machine in
freezing temperatures, severe damage to some
components could result. Damage of this nature is
not covered by the warranty.
Follow the applicable procedure below.
1. Disconnect the electrical power at the circuit breaker
or the electric service switch.
2. Turn off the water supply.
3. Disconnect and drain the incoming ice-making water
line at the rear of the ice machine.
4. Disconnect drain tubing (from the inlet to dump
valve) and drain water into container and discard.
5. Make sure water is not trapped in any of the water
lines, drain lines, distribution tubes, etc.
SV1624
Pry Open the Water Regulating Valve
4. Hold the valve open and blow compressed air
through the condenser until no water remains.
3-18
Part Number 80-1214-3
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Section 4
Ice Machine Sequence of Operation
QF400/QC700/QF800
PRIOR TO START-UP
AUTOMATIC SHUT-OFF
When the toggle switch is placed in the “ice” position the
following must occur prior to starting an ice making
cycle.
3A. Ice Run Out
Ice will build up in the bin until it contacts the bin level
probe. After ice contacts the bin level probe for 30
continuous seconds the compressor de-energizes. To
allow excess ice to run out, the gear motor and the water
float valve solenoid remain energized for an additional
45 seconds, then de-energize.
A. The bin level probe must be open (bin level
light off). If the probe is closed, (bin level light
on) when the toggle switch is moved to ICE, the
control system waits until the bin level probe
opens, (bin level light off) before starting an ice
making sequence. If the bin level probe is
removed/disconnected the ice machine will not
start.
3B. Water Drain
To allow water to drain from the evaporator, the dump
valve energizes for 45 seconds, then de-energizes.
An 8-minute lockout starts when the compressor de-
energizes. When the ice drops away from the bin level
probe the ice machine will begin an initial start-up cycle,
provided the “8-minute lockout” has expired.
B. The water level probe must be closed (water
level light on) to start the compressor. If the
water level probe is open, (water level light off)
the control system waits until the water level
probe closes before starting the compressor.
8 Minute Lockout
INITIAL START-UP
1A. Flush
The bin level light will flash until the 8-minute lockout
expires.
After the 8 minute lockout expires the bin level light will
de-energize.
Immediately after placing the toggle switch into ICE, the
dump valve solenoid, and gearbox are energized. After
45 seconds the dump valve de-energizes.
The 8 minute lockout time can be overridden by moving
the ON/OFF/CLEAN toggle switch from ICE to OFF then
back to ICE.
1B. Water Fill
After 45 seconds the water float valve solenoid is
energized.
FLUSH SEQUENCE IN THE “ICE” POSITION
After the ice machine has run for 100 hours the ice
machine will stop making ice and perform a flush
sequence. The flush sequence will remove minerals that
have settled in the bottom of the evaporator. The entire
flush sequence lasts approximately 11 minutes, after
which the ice machine automatically resumes ice
making and the 100 hour counter in the control board
resets to zero.
2. Freeze Cycle
When water contacts the water level probe the
compressor and condenser fan motor energize
(condenser fan motor is wired through a fan cycling
control).
The gear motor, compressor, condenser fan motor and
water float valve solenoid remain energized as the ice
machine makes ice. The water float valve will open and
close automatically to maintain the proper water level.
NOTE: Flake ice machines use an auger to remove ice
from the evaporator. Occasional noises (creaks, groans,
or pops) are a normal part of the ice making process.
Part No. 80-1214-3
4-1
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Ice Machine Sequence of Operation
Section 4
QF2200
PRIOR TO START-UP
AUTOMATIC SHUT-OFF
3A. Ice Run Out
When the toggle switch is placed in the “ice” position the
following must occur prior to starting an ice making
cycle.
Ice will build up in the bin until it contacts the bin level
probe. After ice contacts the bin level probe for 30
continuous seconds the compressor de-energizes. To
allow excess ice to run out, the gear motor and the water
float valve solenoid remain energized for an additional 4
minutes, then de-energize.
A. The bin level probe must be open (bin level
light off). If the probe is closed, (bin level light
on) when the toggle switch is moved to ICE, the
control system waits until the bin level probe
opens, (bin level light off) before starting an ice
making sequence. If the bin level probe is
removed/disconnected the ice machine will not
start.
3B. Water Drain
To allow water to drain from the evaporator, the dump
valve energizes for 90 seconds, then de-energizes.
An 8-minute lockout starts when the compressor de-
energizes. When the ice drops away from the bin level
probe the ice machine will begin an initial start-up cycle,
provided the “8-minute lockout” has expired.
B. The water level probe must be closed (water
level light on) to start the compressor. If the
water level probe is open, (water level light off)
the control system waits until the water level
probe closes before starting the compressor.
8 Minute Lockout
INITIAL START-UP
1A. Flush
An 8 minute lockout starts when the compressor de-
energizes. The bin level light will flash until the 8-minute
lockout expires.
Immediately after placing the toggle switch into ICE, the
dump valve solenoid, and gearbox are energized. After
45 seconds the dump valve de-energizes.
After the 8 minute lockout expires the bin level light will
de-energize.
The 8 minute lockout time can be overridden by moving
the ON/OFF/CLEAN toggle switch from ICE to OFF then
back to ICE.
1B. Water Fill
After 45 seconds the water float valve solenoid is
energized.
FLUSH SEQUENCE IN THE “ICE” POSITION
2. Freeze Cycle
After the ice machine has run for 100 hours the ice
machine will stop making ice and perform a flush
sequence. The flush sequence will remove minerals that
have settled in the bottom of the evaporator. The entire
flush sequence lasts approximately 11 minutes, after
which the ice machine automatically resumes ice
making and the 100 hour counter in the control board
resets to zero.
When water contacts the water level probe the
compressor and condenser fan motor energize
(condenser fan motor is wired through a fan cycling
control).
The gear motor, liquid line solenoid, condenser fan
motor and water float valve solenoid remain energized
as the ice machine makes ice. The water float valve will
open and close automatically to maintain the proper
water level.
NOTE: Flake ice machines use an auger to remove ice
from the evaporator. Occasional noises (creaks, groans,
or pops) are a normal part of the ice making process.
Remote Condensing Unit
2. Freeze
Remote Condensing Unit
3. Automatic Shut-Off
When the refrigerant pressure is high enough, the low-
pressure control closes. Closing the low pressure control
energizes the contactor coil and the compressor starts.
When the refrigerant pressure is low enough to open the
low-pressure switch, the contactor coil is de-energized
and the compressor and condenser fan motor stop.
The compressor increases the refrigerant pressure, the
fan cycling control closes and the condenser fan motor
starts. The compressor and condenser fan motor remain
energized during the entire Freeze Cycle.
4-2
Part No. 80-1214-3
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Section 4
Ice Machine Sequence of Operation
QF2300
PRIOR TO START-UP
AUTOMATIC SHUT-OFF
When the toggle switch is placed in the “ice” position the
following must occur prior to starting an ice making
cycle.
3A. Ice Run Out
Ice will build up in the bin until it contacts the bin level
probe. After ice contacts the bin level probe for 30
continuous seconds the liquid line solenoid valve,
equalization valve and compressor de-energizes.
A. The bin level probe must be open (bin level
light off). If the probe is closed, (bin level light
on) when the toggle switch is moved to ICE, the
control system waits until the bin level probe
opens, (bin level light off) before starting an ice
making sequence. If the bin level probe is
removed/disconnected the ice machine will not
start.
To allow excess ice to run out, the gear motor and the
water float valve solenoid remain energized for an
additional 4 minutes, then de-energize.
3B. Water Drain
To allow water to drain from the evaporator, the dump
valve energizes for 90 seconds, then de-energizes.
B. The water level probe must be closed (water
level light on) to start the compressor. If the
water level probe is open, (water level light off)
the control system waits until the water level
probe closes before starting the compressor.
An 8-minute lockout starts when the compressor de-
energizes. When the ice drops away from the bin level
probe the ice machine will begin an initial start-up cycle,
provided the “8-minute lockout” has expired.
INITIAL START-UP
1A. Flush
8 Minute Lockout
The bin level light will flash until the 8-minute lockout
expires.
Immediately after placing the toggle switch into ICE, the
dump valve solenoid, and gearbox are energized. After
45 seconds the dump valve de-energizes.
After the 8 minute lockout expires the bin level light will
de-energize.
1B. Water Fill
The 8 minute lockout time can be overridden by moving
the ON/OFF/CLEAN toggle switch from ICE to OFF then
back to ICE.
After 45 seconds the water float valve solenoid is
energized.
FLUSH SEQUENCE IN THE “ICE” POSITION
2. Freeze Cycle
After the ice machine has run for 100 hours the ice
machine will stop making ice and perform a flush
sequence. The flush sequence will remove minerals that
have settled in the bottom of the evaporator. The entire
flush sequence lasts approximately 11 minutes, after
which the ice machine automatically resumes ice
making and the 100 hour counter in the control board
resets to zero.
When water contacts the water level probe the liquid line
solenoid valve, equalization valve, compressor and
condenser fan motor energize (condenser fan motor is
wired through a fan cycling control).
The gear motor, compressor, condenser fan motor and
water float valve solenoid remain energized as the ice
machine makes ice. The water float valve will open and
close automatically to maintain the proper water level.
NOTE: Flake ice machines use an auger to remove ice
from the evaporator. Occasional noises (creaks, groans,
or pops) are a normal part of the ice making process.
Part No. 80-1214-3
4-3
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Ice Machine Sequence of Operation
Section 4
THIS PAGE INTENTIONALLY LEFT BLANK
4-4
Part No. 80-1214-3
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Section 5
Troubleshooting
Checklist
Problem
Possible Cause
To Correct
Ice machine does not operate. No electrical power to the ice machine.
Control Board fuse open
Replace the fuse/reset the breaker/turn on
main power switch/plug cord into receptacle.
ICE/OFF/CLEAN toggle switch set improperly. Move toggle switch to the ICE position.
8 minute lockout has not expired.
Bin level light will flash to indicate 8 minute
lockout has not expired. Refer to Sequence of
Operation
Bin level sensor is disconnected or is
contacting the ice.
Connect bin level sensor or remove ice
contacting probe.
High Pressure Control is open.
Clean condenser, check fan motor, check high
pressure control operation. Check for
refrigerant overcharge or non-condensables in
system.
Gear Motor runs but
compressor will not start.
Water reservoir is empty. (Water must contact Open water service valve or clean float valve
the water level probe to start the compressor). screen. Check water level probe
Water level probes out of position
Correct water level probe position.
Remotes Only No electrical power to condensing unit
Replace the fuse/reset the breaker/turn on the
main power switch.
Ice machine stops and can be The SafeGuard feature is stopping the ice
restarted by moving the toggle machine.
Refer to “SafeGuard Feature” in this section
switch to OFF and back to ICE.
Ice quality is poor.
Poor incoming water quality.
Test the quality of the incoming water and
check filter.
Water filtration is poor.
Replace filter.
Incoming water temperature is above 90°F
(32.3°C)
Correct water temperature. (Verify check/
mixing valves in other equipment are working
properly). Connect the ice machine to a cold
water supply.
Water pressure is low.
Water pressure must remain between 20 and
80 psig.
Water softener is working improperly (if
applicable).
Repair the water softener.
Low ice capacity.
Water float valve screen is dirty.
Incoming water supply is shut-off.
Water dump valve is leaking.
Water Pressure is low.
Remove and clean the filter screen.
Open the water service valve.
Clean the dump valve.
Water pressure must remain between 20 and
80 psig.
Incoming water temperature is above 90°F
(32.2°C)
Correct water temperature. (verify check/
mixing valves in other equipment is working
properly)
Water float valve stuck open or leaking.
Remove the float valve and clean it.
Air-Cooled Models Only Objects stacked around ice machine, blocking Remove items blocking airflow.
airflow to condenser.
High air temperature around ice machine.
Air temperature must not exceed 110°F
(43.3°C)
Inadequate clearance around the ice machine. Provide adequate clearance.
The condenser is dirty. Clean the condenser.
Part No. 80-1214-3
5-1
Revised 8/2003
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Troubleshooting
Section 5
Safeguard Feature
In addition to standard safety controls, your Manitowoc ice machine features built-in SafeGuards. The ice machine will
stop when conditions arise that would cause major component failure.
RESET PROCEDURE
SAFEGUARD INDICATOR LIGHTS
1. Move the ICE/OFF/CLEAN toggle switch to OFF and
then back to ICE.
During a SafeGuard Mode the corresponding light (disch
temp, water level or speed) will flash continuously.
A. If a safeguard feature has stopped the ice
machine, it will restart after a short delay.
Proceed to step 2.
The SafeGuard will remain in memory for 48 hours of ice
making time. After 48 hours of ice making time the
SafeGuard will automatically be erased. If power is
interrupted during the 48 hours, the timing will resume
when power is applied to the ice machine.
B. If the ice machine does not restart, see “Ice
Machine Does Not Operate” on previous page.
Placing the toggle switch in the OFF position:
The corresponding light will flash continuously.
Placing the toggle switch in the ICE position:
2. Allow the ice machine to run to determine if the
condition is reoccurring.
A. If the ice machine continues to run, the condition
has corrected itself. Allow the ice machine to
continue running.
The light will de-energize and a start-up sequence will
initiate.
B. If the ice machine stops again, the condition has
reoccurred.
The corresponding light will flash anytime the toggle
switch is placed in the OFF position provided
SafeGuards
48 hours of ice making time has not been exceeded.
•
•
•
No Water
Gear Motor Speed is Incorrect
QF400/QC700/QF800 Only - Discharge line
temperature is too high or low during the freeze
cycle.
•
QF2200 Only - Liquid line temperature is too high or
low during the freeze cycle.
STANDBY MODE
The first time a failure occurs, the ice machine de-
energizes and initiates a Standby Mode. The ice
machine will remain off for 60 minutes, then
automatically restart to see if the problem reoccurs.
During the Standby Mode the corresponding light
flashes continuously (disch temp, water level or speed).
If the same failure keeps occurring, the ice machine will
initiate a SafeGuard Mode and remain off until manually
restarted.
5-2
Part No. 80-1214-3
Revised 8/2003
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Section 5
Troubleshooting
Analyzing Why SafeGuards May Stop the
Ice Machine
SAFEGUARD MODES
No Water
According to the refrigeration industry, a high
percentage of compressor failure are the result of
external causes. These can include flooding or starving
expansion valves, dirty condensers, water loss to the ice
machine, etc. SafeGuards protect the ice machine
(primarily the compressor) from external failures by
stopping ice machine operation before major component
damage occurs.
During the Freeze cycle if the water level probe opens or
remains open for more than 90 continuous seconds, the
ice machine will de-energize the compressor and gear
motor, continuously flash the water level light and initiate
a 60 minute Standby Mode.
During the Standby Mode the water level light will
continually flash to indicate a Standby Mode.
After the 60 -minute Standby Mode, the ice machine will
de-energize the water level light and initiate a start-up
sequence.
Refrigeration and electrical component failures may also
trip a safeguard. Eliminate all electrical components and
external causes first. If it appears that the refrigeration
system is causing the problem, use the charts,
WATER CONTACTS THE WATER LEVEL PROBE:
The ice machine continues to make ice.
checklists, and other references to determine the cause.
NOTE: The following checklists are designed to assist
the service technician in analysis. However, because
there are many possible external problems, do not limit
your diagnosis to only the items listed.
WATER LEVEL PROBE OPENS OR REMAINS OPEN
FOR MORE THAN 90 CONTINUOUS SECONDS:
The ice machine will start another 60-minute Standby
Mode.
The ice machine repeats the above sequence until:
Water contacts the water level probe
or
The toggle switch is moved to the OFF position.
INDICATOR LIGHT
Before 48 hours have elapsed:
After a Standby Mode has been initiated the water level
light will flash anytime the toggle switch is placed in the
OFF position.
After 48 hours have elapsed:
The SafeGuard will be automatically erased from
memory and the water level will not flash.
No Water Checklist
Possible Problem List
Corrective Action List
No water
Restore water supply.
Quick disconnect removed from water float valve
Water float valve screen blocked
Water float valve solenoid coil defective
Water float valve improperly adjusted
Dump valve leaking
Restore water supply.
Clean screen.
Replace coil (see Water float valve diagnostics).
Adjust valve (see Water level check).
Repair or replace dump valve.
Connect and correctly position probes.
Water level probes disconnected or removed
Part No. 80-1214-3
5-3
Revised 8/2003
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Troubleshooting
Section 5
Gear Motor Speed
Anytime the motor speed sensor detects the motor
speed (rpm) is below the minimum range for
3 continuous seconds, the ice machine will:
During the SafeGuard Mode the Motor Speed Sensor
light will continually flash to indicate a SafeGuard Mode.
The ice machine remains off until:
1. De-energize the compressor and/or gear motor.
2. Continuously flash the Gear Motor Speed light.
3. Initiate a 60-minute Standby Mode.
•
•
The toggle switch is moved from OFF to ICE.
Line voltage is interrupted and restored.
INDICATOR LIGHT
During the Standby Mode the Motor Speed Sensor light
will flash to indicate a Standby Mode.
Before 48 hours have elapsed:
After a Standby Mode has been initiated the Gear Motor
Speed light will flash anytime the toggle switch is placed
in the OFF position.
After the 60-minute Standby Mode, the ice machine will
de-energize the Motor Speed light and initiate a start-up
sequence.
After 48 hours have elapsed:
Gear motor speed normal:
The SafeGuard will be automatically erased from
memory and the Gear Motor Speed light will not flash.
The ice machine continues to make ice.
Gear motor speed below minimum range for
3 continuous seconds:
The ice machine will start another 60-minute Standby
Mode.
If the gear motor speed drops below the minimum range
for 3 continuous seconds during 7 consecutive cycles,
the ice machine will initiate a SafeGuard Mode.
Gear Motor Speed Checklist
Possible Problem List
Low water pressure
Corrective Action List
Verify water pressure is between 20 and 80 psig.
Replace motor speed sensor.
Replace motor.
Defective motor speed sensor
Defective motor
Defective coupler
Replace coupler.
Defective evaporator/auger assembly
Low voltage
Replace evaporator assembly.
Verify voltage is within
10% of nameplate voltage.
Ice frozen to auger/evaporator
Allow evaporator to thaw.
5-4
Part No. 80-1214-3
Revised 8/2003
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Section 5
Troubleshooting
Temperature is Too High or Low
QF400/QC700/QF800
The temperature sensor (thermistor) is mounted on the
compressor discharge line. The temperature sensor
provides input to the control board. The control board
monitors the temperature anytime the compressor is
energized.
4. After 30 minutes of compressor run time, the ice
machine will check the discharge line temperature.
Discharge line temperature normal:
The ice machine continues to make ice.
If the thermistor detects 245°F or higher for 15
continuous seconds:
Discharge line temperature below 155°F after 30
minutes of run time:
The ice machine will start another 60-minute
Standby Mode.
1. The ice machine will de-energize the compressor
and gear motor and initiate a SafeGuard Mode.
2. The control board “Disch Temp” light will continue to
flash twice then pause, to indicate the ice machine
has shut off on high temperature.
If the discharge line temperature drops below 155°F for
3 continuous minutes during 7 consecutive cycles the
ice machine will start a SafeGuard Mode.
3. The ice machine will remain off until the toggle
switch is moved from ICE to OFF, and back to ICE.
During the SafeGuard Mode the ”Disch Temp” light will
continually flash to indicate a Safeguard Mode. The ice
machine remains off until:
or
•
The toggle switch is moved from ICE to OFF, then
back to ICE.
Line voltage is interrupted and restored.
If the thermistor detects 155°F or less for 3
continuous minutes:
•
Line voltage is interrupted and restored.
INDICATOR LIGHT
1. The control board ignores the low temperature limit
for the first 30 minutes of compressor run time.
Before 48 hours have elapsed:
2. The ice machine will de-energize the compressor
and gear motor, continuously flash the control board
“Disch Temp” light and initiate a 60-minute Standby
Mode.
After a Standby Mode has been initiated the Control
Board “Disch Temp“ light will flash anytime the toggle
switch is placed in the OFF position.
After 48 hours have elapsed:
3. After the 60-minute Standby Mode, the ice machine
will de-energize the “Disch Temp” light and initiate a
start-up sequence.
The SafeGuard will be automatically erased from memory
and the “Disch Temp” light will not flash.
Temperature Sensor Checklist
QF400/QC700/QF800
Possible Problem List
Corrective Action List
Thermistor is not properly insulated
Thermistor loose
Insulate thermistor.
Secure thermistor to discharge line.
Thermistor mounted in the wrong location
Position thermistor on discharge line 6 in. from compressor
discharge port.
Thermistor defective
Refer to CHECK PROCEDURE under “Thermistor.”
Replace expansion valve.
Flooding expansion valve
Refrigerant overcharge or undercharge
Low ambient temperature
Defective compressor
Recover and weigh in nameplate charge.
Verify ambient temperature remains above 45°F (7.2°C).
Replace compressor.
Insufficient or low water pressure
Verify water pressure is between 20 and 80 psig.
Part No. 80-1214-3
5-5
Revised 8/2003
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Troubleshooting
Section 5
Temperature is Too High or Low
QF2200 Only
The temperature sensor (thermistor) is mounted on the
liquid line. The temperature sensor provides input to the
control board. The control board monitors the
temperature anytime the liquid line solenoid valve is
energized.
4. After 30 minutes of compressor run time, the ice
machine will check the liquid line temperature.
Liquid line temperature normal:
The ice machine continues to make ice.
If the thermistor detects 123°F or higher for 15
continuous seconds:
Liquid line temperature 30°F or less after 30 minutes
of run time:
The ice machine will start another 60-minute
Standby Mode.
1. The ice machine will de-energize the compressor
and gear motor and initiate a SafeGuard Mode.
2. The control board “Disch Temp” light will continue to
flash twice then pause, to indicate the ice machine
has shut off on high temperature.
If the liquid line temperature is 30°F or less for 3
continuous minutes during 7 consecutive cycles the ice
machine will start a SafeGuard Mode.
3. The ice machine will remain off until the toggle
switch is moved from ICE to OFF, and back to ICE.
During the SafeGuard Mode the ”Disch Temp” light will
continually flash to indicate a Safeguard Mode. The ice
machine remains off until:
or
•
The toggle switch is moved from ICE to OFF, then
back to ICE.
Line voltage is interrupted and restored.
If the thermistor detects 30°F or less for 3
continuous minutes:
•
Line voltage is interrupted and restored.
INDICATOR LIGHT
1. The control board ignores the low temperature limit
for the first 30 minutes of compressor run time.
Before 48 hours have elapsed:
2. The ice machine will de-energize the liquid line
solenoid valve and gear motor, continuously flash
the control board “Disch Temp” light and initiate a
60-minute Standby Mode.
After a Standby Mode has been initiated the Control
Board “Disch Temp“ light will flash anytime the toggle
switch is placed in the OFF position.
After 48 hours have elapsed:
3. After the 60-minute Standby Mode, the ice machine
will de-energize the “Disch Temp” light and initiate a
start-up sequence.
The SafeGuard will be automatically erased from memory
and the “Disch Temp” light will not flash.
Temperature Sensor Checklist
QF2200
Possible Problem List
Corrective Action List
Insulate thermistor.
Thermistor is not properly insulated
Thermistor loose
Secure thermistor to liquid line.
Thermistor mounted in the wrong location
Position thermistor on liquid line between heat exchanger and
line drier.
Thermistor defective
Refer to CHECK PROCEDURE under “Thermistor.”
Replace expansion valve.
Flooding expansion valve
Refrigerant overcharge or undercharge
Low ambient temperature
Recover and weigh in nameplate charge.
Verify ambient temperature remains above 45°F (7.2°C).
Replace headmaster.
Headmaster will not bypass
Insufficient or low water pressure
Verify water pressure is between 20 and 80 psig.
5-6
Part No. 80-1214-3
Revised 8/2003
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Section 5
Troubleshooting
Gear Box Removal
QF400
QC700/QF800
The evaporator and motor / gearbox are separate
assemblies. Warranty procedures require replacement
of the entire evaporator or motor /gearbox assembly.
Separate components are not available, and field
rebuilding during the warranty period is not allowed.
The evaporator and motor / gearbox are separate
assemblies. Warranty procedures require replacement
of the entire evaporator or motor /gearbox assembly.
Separate components are not available, and field
rebuilding during the warranty period is not allowed.
1. Disconnect power to the ice machine.
1. Disconnect power to the ice machine.
2. Remove water level probes, water reservoir cover,
float valve, water reservoir, ice chute, and drain
tubing (refer to Component Removal).
2. Remove water level probes, water reservoir cover,
float valve, water reservoir, ice chute, and drain
tubing (refer to Component Removal).
3. Remove bolts securing foundation coupling to gear
motor assembly.
3. Remove bolts securing foundation coupling to gear
motor assembly.
4. Lift evaporator and rest on top of foundation
coupling.
4. Lift evaporator and rest on top of foundation
coupling.
5. Disconnect line voltage wiring at motor Molex
connector.
5. Disconnect line voltage wiring at motor Molex
connector.
6. Remove two screws holding motor speed sensor
and remove sensor.
6. Remove two screws holding motor speed sensor
and remove sensor.
7. Remove coupling, spline hub and keyway from gear
motor.
7. Remove bolts securing gear motor assembly
mounting bracket to base.
8. Support motor / gearbox assembly and remove 4
bolts securing gear motor assembly to base.
8. Remove gear motor assembly from ice machine.
9. Remove gear motor assembly from ice machine.
9. Remove coupling, spline hub, keyway, and mounting
bracket from gear motor.
10. Apply anti-seize compound to the shaft and all bolts
to ease future disassembly.
10. Apply anti-seize compound to the shaft and all bolts
to ease future disassembly.
6
3
SV2046
8
3
SV2011
7
Part No. 80-1214-3
5-7
Revised 8/2003
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Troubleshooting
Section 5
QF2200/QF2300
The evaporator and motor / gearbox are separate
assemblies. Warranty procedures require replacement
of the entire evaporator or motor /gearbox assembly.
Separate components are not available, and field
rebuilding during the warranty period is not allowed.
1. Disconnect power and water supply to the ice
machine and drain all water from the reservoir and
evaporator.
2. Remove reservoir retaining pin, water reservoir, ice
chute, and drain tubing (refer to Component
Removal).
3. Remove bolts securing foundation coupling to base.
4. Lift and support evaporator (evaporator weighs 80
lbs.).
5. Remove gear motor drip shield and disconnect line
voltage wiring at motor Molex connector.
6. Remove two screws holding motor speed sensor
and remove sensor.
7. Remove bolts securing gear motor assembly to
base.
8. Remove gear motor assembly from ice machine.
9. Remove coupling (use a 8 mm hex wrench for
coupling set screw), spline hub and keyway from
gear motor.
10. Apply anti-seize compound to the shaft and all bolts
to ease future disassembly.
6
8
3
7
SV3017
5-8
Part No. 80-1214-3
Revised 8/2003
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Section 5
Troubleshooting
Evaporator Removal
QF400
QC700/QF800
The evaporator and motor / gearbox are separate
assemblies. Warranty procedures require replacement
of the entire evaporator or motor /gearbox assembly.
Separate components are not available, and field
rebuilding during the warranty period is not allowed.
The evaporator and motor / gearbox are separate
assemblies. Warranty procedures require replacement
of the entire evaporator or motor /gearbox assembly.
Separate components are not available, and field
rebuilding during the warranty period is not allowed.
1. Disconnect power to the ice machine.
1. Disconnect power to the ice machine.
2. Remove water level probes, water reservoir cover,
float valve, water reservoir, ice chute, and drain
tubing (refer to Component Removal).
2. Remove water level probes, water reservoir cover,
float valve, water reservoir, ice chute, and drain
tubing (refer to Component Removal).
3. Recover refrigerant and disconnect refrigeration
tubing from evaporator.
3. Recover refrigerant and disconnect refrigeration
tubing from evaporator.
4. Remove foundation-coupling bolts.
4. Remove foundation-coupling bolts.
5. Lift evaporator out of foundation coupling and
remove from ice machine.
5. Lift evaporator out of foundation coupling and
remove from ice machine.
6. Remove spline hub and keyway from evaporator.
6. Remove spline hub and keyway from evaporator.
7. Apply anti-seize compound to the shaft and all bolts
to ease future disassembly.
7. Apply anti-seize compound to the shaft and all bolts
to ease future disassembly.
8. After reinstallation of evaporator, torque foundation
bolts to 195-205 inch lbs.
8. After reinstallation of evaporator, torque foundation
bolts to 195-205 inch lbs.
REMOVE
FOUNDATION BOLTS
REMOVE
FOUNDATION BOLTS
SV2046
SV3057
Part No. 80-1214-3
5-9
Revised 8/2003
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Troubleshooting
Section 5
QF2200/QF2300
The evaporator and motor / gearbox are separate
assemblies. Warranty procedures require replacement
of the entire evaporator or motor /gearbox assembly.
Separate components are not available, and field
rebuilding during the warranty period is not allowed.
1. Disconnect power and water supply to the ice
machine and drain all water from the reservoir and
evaporator.
2. Remove reservoir retaining pin, water reservoir, ice
chute, and drain tubing (refer to Component
Removal).
3. Recover refrigerant and disconnect refrigeration
tubing from evaporator.
4. Remove foundation-coupling bolts.
5. Lift evaporator out of foundation coupling and
remove from ice machine.
6. Remove spline hub and keyway from evaporator
(8 mm hex wrench for coupling set screw).
7. Apply anti-seize compound to the shaft and all bolts
to ease future disassembly.
8. After reinstallation of evaporator, torque foundation
bolts to 195-205 inch lbs.
REMOVE
SV3017
FOUNDATION
BOLTS
5-10
Part No. 80-1214-3
Revised 8/2003
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Section 6
Electrical System
Energized Parts Charts
QF400/QC700/QF800
Control Relays
Sensors
Ice Making
Sequence Of
Operation
1
2
3
4
Length
Of Time
Water
Level
Probe
Gear
Motor
Speed
Bin Level
Probe
Temperature
Sensor
Float
Valve
Coil
Contactor Dump Gear
Coil
Valve Motor
Sensing
for Gear
Motor
START-UP
1A. Water
Flush
Not
Sensing for
Water Level
Not Sensing
for
Temperature
Sensing No
Ice Contact
Off
On
Off
On
On
Off
On
45 Seconds
Speed
Sensing
for Gear
Motor
Until Water
Contacts
Water Level
Probe
Not Sensing
for
Temperature
Sensing for Sensing No
Water Level Ice Contact
1B. Water Fill
Off
On
Speed
Sensing for
245°F
Immediately.
Sensing for
155°F after 30
min. of Ice
Making
Until Ice
Contacts Bin
Level Probe for
30 Continuous
Seconds
Sensing
for Gear
Motor
FREEZE
SEQUENCE
2. Freeze
Sensing for Sensing No
Water Level Ice Contact
Off
On
On
Speed
AUTOMATIC
SHUT-OFF
Sensing
for Gear
Motor
Not Sensing
for
Temperature
Sensing for
Water Level Ice Contact
Sensing
Off
Off
Off
On
On
Off
On
Off
45 Seconds
45 Seconds
3A. Ice Run
Out
Speed
Not
Not
Not Sensing
for
Temperature
Sensing
for Gear
Motor
3B. Drain
Evaporator
Sensing
Sensing for
Ice Contact
Water Level
Speed
Not
Until Ice No
Longer
Contacts Bin
Level Probe
Not
Not Sensing
for
Temperature
Sensing
for Gear
Motor
AUTOMATIC
SHUT-OFF
Sensing
Off
Off
Off
Off
Sensing for
Ice Contact
Water Level
Speed
When the toggle switch is placed in the ICE position, the following must occur prior to starting an ice making cycle.
A.)The bin level probe must be open (Bin Level light off). If the probe is closed (Bin Level light on) when the toggle switch is moved to ICE, the
control system waits until the bin level probe opens (Bin Level light off) before starting an ice making sequence.
If the bin level probe is disconnected from the control board, the ice machine will not start and will continuously flash the Bin Level light.
The ice machine will remain off until:
1.The bin level probe is reconnected to the circuit board
2.The toggle switch is moved from ICE to OFF, then back to ICE.
B. The water level probe must be closed (Water Level light on) to start the compressor.
If the water level probe is open (Water Level light off), the control system waits until the water level probe closes before starting the compressor.
QC700/QF800
Condenser Fan Motor -The fan motor is wired through a fan cycle pressure control. The fan motor will cycle on/off depending on discharge pressure
8-Minute Lockout - The Bin Level light will flash until the 8-minute lockout expires.
After the 8-minute lockout expires, the Bin Level light will de-energize.
The 8-minute lockout time can be overridden by moving the ICE/OFF/CLEAN toggle switch from ICE to OFF, then back to ICE.
Part No. 80-1214-3
6-1
Revised 8/2003
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Electrical System
Section 6
Energized Parts Charts
QF2200
Control Relays
Sensors
Ice Making
Sequence
Of
1
2
3
4
Length
Of Time
Water
Level
Probe
Gear
Motor
Speed
Bin Level
Temperature
Sensor
Liquid Line
Solenoid
Valve
Float
Valve
Coil
Dump Gear
Valve Motor
Probe
Operation
Sensing
for Gear
Motor
START-UP
1A. Water
Flush
Not
Sensing for
Water Level
Not Sensing
for
Temperature
Sensing No
Ice Contact
Off
Off
On
Off
On
On
Off
On
45 Seconds
Speed
Sensing
for Gear
Motor
Until Water
Contacts
Water Level
Probe
Not Sensing
for
Temperature
1B. Water
Fill
Sensing for Sensing No
Water Level Ice Contact
Speed
Sensing for
123°F
Immediately.
Sensing for
30°F after 30
min. of Ice
Making
Until Ice
Sensing Contacts Bin
FREEZE
SEQUENCE
2. Freeze
Sensing for Sensing No
Water Level Ice Contact
for Gear
Motor
Speed
Level Probe
for 30
Continuous
Seconds
On
Off
On
On
AUTOMATIC
SHUT-OFF
Sensing
for Gear
Motor
Not Sensing
for
Temperature
Sensing for
Water Level Ice Contact
Sensing
Off
Off
Off
On
On
Off
On
Off
4 Minutes
3A. Ice Run
Out
Speed
Not
Not
Not Sensing
for
Temperature
Sensing
for Gear
Motor
3B. Drain
Evaporator
Sensing
Sensing for
Ice Contact
Water Level
90 Seconds
Speed
Not
Until Ice No
Longer
Contacts Bin
Level Probe
Not
Not Sensing
for
Temperature
Sensing
for Gear
Motor
AUTOMATIC
SHUT-OFF
Sensing
Off
Off
Off
Off
Sensing for
Ice Contact
Water Level
Speed
*After the liquid line solenoid valve energizes, the suction pressure will rise above the low-pressure switch cut-in (22 psig) and the compressor and
condenser fan motor energize. The condenser fan motor remains energized during the entire freeze cycle, the head pressure control valve con-
trols the discharge pressure.
When the toggle switch is placed in the ICE position, the following must occur prior to starting an ice making cycle.
A.)The bin level probe must be open (Bin Level light off). If the probe is closed (Bin Level light on) when the toggle switch is moved to ICE, the
control system waits until the bin level probe opens (Bin Level light off) before starting an ice making sequence.
If the bin level probe is disconnected from the control board, the ice machine will not start and will continuously flash the Bin Level light.
The ice machine will remain off until:
1.The bin level probe is reconnected to the circuit board
2.The toggle switch is moved from ICE to OFF, then back to ICE.
B. The water level probe must be closed (Water Level light on) to start the compressor.
If the water level probe is open (Water Level light off), the control system waits until the water level probe closes before starting the compressor.
8-Minute Lockout - The Bin Level light will flash until the 8-minute lockout expires.
After the 8-minute lockout expires, the Bin Level light will de-energize.
The 8-minute lockout time can be overridden by moving the ICE/OFF/CLEAN toggle switch from ICE to OFF, then back to ICE.
6-2
Part No. 80-1214-3
Revised 8/2003
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Section 6
Electrical System
Energized Parts Charts
QF2300
Control Relays
2
Sensors
1
3
4
Ice Making
Sequence Of
Operation
Liquid Line
Solenoid/
Equalization
Valve/
Length
Of Time
Water
Level
Probe
Bin Level Gear Motor
Float
Valve
Coil
Gear
Motor
Probe
Speed
Dump Valve
Compressor
Not
START-UP
1A. Water
Flush
Sensing for
Gear Motor
Speed
Sensingfor Sensing No
Off
Off
On
Off
On
On
Off
On
45 Seconds
Water
Level
Ice Contact
Until Water
Contacts
Water Level
Probe
Sensingfor
Water
Sensing for
Gear Motor
Speed
Sensing No
Ice Contact
1B. Water Fill
Level
Until Ice
Contacts Bin
Level Probe
for 3
Continuous
Minutes
FREEZE
SEQUENCE
2. Freeze
Sensingfor
Water
Sensing for
Gear Motor
Speed
Sensing No
Ice Contact
On
Off
Off
On
On
Level
AUTOMATIC
SHUT-OFF
Not
Sensingfor
Water
Sensing for
Gear Motor
Speed
Sensing
Ice Contact
Off
Off
Off
On
Off
Off
On
Off
Off
4 Minutes
3A. Ice Run
Out
Level
Not
Not
Sensingfor
Water
3B. Drain
Evaporator
On
Sensing
Ice Contact
Sensing for
Gear Motor
Speed
90 Seconds
(90 Seconds)
Level
Not
Not
Sensingfor
Water
Until Ice No
Longer
Contacts Bin
Level Probe
AUTOMATIC
SHUT-OFF
Sensing
Ice Contact
Sensing for
Gear Motor
Speed
Off
Level
When the toggle switch is placed in the ICE position, the following must occur prior to starting an ice making cycle.
A.)The bin level probe must be open (Bin Level light off). If the probe is closed (Bin Level light on) when the toggle switch is moved to ICE, the control
system waits until the bin level probe opens (Bin Level light off) before starting an ice making sequence.
If the bin level probe is disconnected from the control board, the ice machine will not start and will continuously flash the Bin Level light.
The ice machine will remain off until:
1.The bin level probe is reconnected to the circuit board
2.The toggle switch is moved from ICE to OFF, then back to ICE.
B. The water level probe must be closed (Water Level light on) to start the compressor.
If the water level probe is open (Water Level light off), the control system waits until the water level probe closes before starting the compressor.
8-Minute Lockout - The Bin Level light will flash until the 8-minute lockout expires.
After the 8-minute lockout expires, the Bin Level light will de-energize.
The 8-minute lockout time can be overridden by moving the ICE/OFF/CLEAN toggle switch from ICE to OFF, then back to ICE.
Part No. 80-1214-3
6-3
Revised 8/2003
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Electrical System
Section 6
Wiring Diagram Sequence of
Operation
L2 (N)
L1
GROUND
(21)
QF400
RELAY
K2
Initial Start-Up or Start-Up After
Automatic Shut-Off
HIGH
PRESSURE
CUT-OUT
CONTACTOR
COIL
RELAY
K1
(90)
(95)
(65)
1A. WATER FLUSH
10 AMP
FUSE
Immediately after placing the toggle
switch in “ICE”, the dump valve
solenoid, and gearbox are energized.
After 45 seconds the dump valve de-
energizes.
GEARMOTOR
(43)
(25)
(46)
(47)
RELAY
K3
(48)
RELAY K4
WATER FLOAT
VALVE COIL
GEARMOTOR
RUN CAPACITOR
(56)
(52)
(22)
(55)
FAN MOTOR
(AIR-COOLED ONLY)
(51)
(10)
DUMP VALVE
COIL
L1 T1
(41)
(11)
CONTACTOR
CONTACTS
(14)
RUN
START
(44)
SV3033
1A. Water Flush (45 Seconds)
Toggle Switch
ICE
Bin Level Probe
Control Board Relays
Open (No Ice Contact)
#1
Contactor Coil
Open / OFF
OFF
Compressor
Condenser Fan Motor
Dump Valve
OFF
#2
#3
#4
ON
Gear Motor
ON
Water Float Valve Solenoid Coil
OFF
6-4
Part No. 80-1214-3
Revised 8/2003
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Section 6
Electrical System
Initial Start-Up or Start-Up After
Automatic Shut-Off (cont.)
L2 (N)
L1
GROUND
(21)
1B. WATER FILL
RELAY
K2
After 45 seconds the float valve
solenoid is energized.
HIGH
PRESSURE
CUT-OUT
CONTACTOR
RELAY
K1
COIL
(90)
(95)
(65)
10 AMP
FUSE
GEARMOTOR
(43)
(25)
(46)
(47)
RELAY
K3
(48)
RELAY K4
WATER FLOAT
VALVE COIL
(52)
GEARMOTOR
RUN CAPACITOR
(56)
(22)
(55)
FAN MOTOR
(AIR-COOLED ONLY)
(51)
(10)
DUMP VALVE
COIL
L1 T1
(41)
(11)
CONTACTOR
CONTACTS
(14)
RUN
START
(44)
SV3034
1B. Water Fill (Until Water Contacts Water Level Probe)
Toggle Switch
ICE
Bin Level Probe
Control Board Relays
Open (No Ice Contact)
#1
Contactor Coil
Compressor
Open / OFF
OFF
Condenser Fan Motor
Dump Valve
OFF
#2
#3
#4
OFF
Gear Motor
ON
Water Float Valve Solenoid Coil
ON
Part No. 80-1214-3
6-5
Revised 8/2003
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Electrical System
Section 6
Freeze Cycle
L2 (N)
L1
GROUND
(21)
2. FREEZE
The gear motor, compressor,
condenser fan motor and water float
valve solenoid remain energized as
the ice machine makes ice. The
water float valve will open and close
automatically to maintain the proper
water level.
RELAY
K2
HIGH
CONTACTOR
COIL
RELAY
K1
PRESSURE
CUT-OUT
(90)
(95)
(65)
10 AMP
FUSE
GEARMOTOR
(48)
(25)
(43)
(46)
(47)
RELAY
K3
RELAY K4
WATER FLOAT
VALVE COIL
(52)
GEARMOTOR
RUN CAPACITOR
(56)
(22)
(55)
FAN MOTOR
(AIR-COOLED ONLY)
(51)
(10)
DUMP VALVE
COIL
L1 T1
(41)
(11)
CONTACTOR
CONTACTS
(14)
RUN
START
(44)
SV3036
2. Freeze (Until Ice Contacts Bin Level Probe for 30 Continuous Seconds)
Toggle Switch
ICE
Bin Level Probe
Control Board Relays
Open (No Ice Contact)
#1
Contactor Coil
Compressor
Closed / ON
ON
Condenser Fan Motor
Dump Valve
ON
#2
#3
#4
OFF
Gear Motor
ON
Water Float Valve Solenoid Coil
ON
6-6
Part No. 80-1214-3
Revised 8/2003
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Section 6
Electrical System
Automatic Shut-Off
L2 (N)
L1
GROUND
(21)
3A. ICE RUN OUT
Ice will build up in the bin until it
contacts the bin level probe. After ice
contacts the bin level probe for 30
continuous seconds the compressor
de-energizes. To allow excess ice to
run out, the gear motor and the water
float valve solenoid remain energized
for an additional 45 seconds, then
de-energize.
RELAY
K2
HIGH
CONTACTOR
RELAY
K1
PRESSURE
CUT-OUT
COIL
(90)
(95)
(65)
10 AMP
FUSE
GEARMOTOR
(43)
(25)
(46)
(47)
RELAY
K3
(48)
RELAY K4
WATER FLOAT
VALVE COIL
GEARMOTOR
RUN CAPACITOR
(56)
(52)
(22)
(55)
FAN MOTOR
(AIR-COOLED ONLY)
(51)
(10)
DUMP VALVE
COIL
L1 T1
(41)
(11)
CONTACTOR
CONTACTS
(14)
RUN
START
(44)
SV3037
3A. Ice Run Out (45 Seconds)
Toggle Switch
ICE
Bin Level Probe
Control Board Relays
Closed (Ice Contacting Probe)
#1
Contactor Coil
Open / OFF
OFF
Compressor
Condenser Fan Motor
Dump Valve
OFF
#2
#3
#4
OFF
Gear Motor
ON
Water Float Valve Solenoid Coil
ON
Part No. 80-1214-3
6-7
Revised 8/2003
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Electrical System
Section 6
Automatic Shut-Off
L2 (N)
L1
GROUND
(21)
3B. DRAIN EVAPORATOR
To allow water to drain from the
evaporator, the dump valve energizes
for 45 seconds, then de-energizes.
RELAY
K2
HIGH
PRESSURE
CUT-OUT
CONTACTOR
COIL
RELAY
K1
(90)
(95)
(65)
10 AMP
FUSE
GEARMOTOR
(48)
(25)
(43)
(46)
(47)
RELAY
K3
RELAY K4
WATER FLOAT
VALVE COIL
(52)
GEARMOTOR
RUN CAPACITOR
(56)
(22)
(55)
FAN MOTOR
(AIR-COOLED ONLY)
(51)
(10)
DUMP VALVE
COIL
L1 T1
(41)
(11)
CONTACTOR
CONTACTS
(14)
RUN
START
(44)
SV3038
3B. Drain Evaporator (45 Seconds)
Toggle Switch
ICE
Bin Level Probe
Control Board Relays
Closed (Ice Contacting Probe)
#1
Contactor Coil
Open / OFF
OFF
Compressor
Condenser Fan Motor
Dump Valve
OFF
#2
#3
#4
OFF
Gear Motor
ON
Water Float Valve Solenoid Coil
OFF
6-8
Part No. 80-1214-3
Revised 8/2003
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Section 6
Electrical System
Automatic Shut-Off
L2 (N)
L1
GROUND
(21)
An 8 minute lockout starts when the
compressor de-energizes. When the
ice drops away from the bin level
probe the ice machine will begin an
initial start-up cycle, provided the “8
minute lock-out” has expired.
RELAY
K2
HIGH
PRESSURE
CUT-OUT
CONTACTOR
RELAY
K1
COIL
(90)
(95)
(65)
10 AMP
FUSE
GEARMOTOR
(43)
(25)
8 Minute Lock-out
(46)
The bin level light will flash until the 8
minute lock-out expires.
(47)
RELAY
K3
(48)
RELAY K4
WATER FLOAT
VALVE COIL
(52)
GEARMOTOR
RUN CAPACITOR
After the 8 minute lock-out expires
the bin level light will de-energize.
(56)
The 8 minute lock-out time can be
overridden by moving the ON/OFF/
ICE toggle switch from ICE to OFF
then back to ICE.
(22)
(55)
FAN MOTOR
(AIR-COOLED ONLY)
(51)
(10)
DUMP VALVE
COIL
L1 T1
(41)
(11)
CONTACTOR
CONTACTS
(14)
RUN
START
(44)
SV3039
Automatic Shut-Off (Until Ice No Longer Contacts Bin Level Probe)
Toggle Switch
ICE
Bin Level Probe
Control Board Relays
Closed (Ice Contacting Probe)
#1
Contactor Coil
Open / OFF
OFF
Compressor
Condenser Fan Motor
Dump Valve
OFF
#2
#3
#4
OFF
Gear Motor
OFF
Water Float Valve Solenoid Coil
OFF
Part No. 80-1214-3
6-9
Revised 8/2003
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Electrical System
Section 6
Wiring Diagram Sequence of
Operation
L1
L2 (N)
GROUND
(21)
QC700/QF800
RELAY
K2
Initial Start-Up or Start-Up After
Automatic Shut-Off
HIGH
PRESSURE
CUT-OUT
CONTACTOR
COIL
RELAY
K1
C4
(90)
(95)
(65)
1A. WATER FLUSH
POTENTIAL
RELAY
10 AMP
FUSE
GEARMOTOR
Immediately after placing the toggle
switch in “ICE”, the dump valve
solenoid, and gearbox are energized.
After 45 seconds the dump valve de-
energizes.
(25)
(46)
(21)
(22)
(43)
RUN
CAPACITOR
RELAY
K3
RELAY K4
WATER FLOAT
VALVE COIL
(52)
(56)
C4
POTENTIAL
RELAY
(22)
(55)
(51)
FAN MOTOR
(AIR-COOLED ONLY)
DUMP VALVE COIL
CONTACTOR
COIL
FAN CYCLE
CONTROL
RUN CAPACITOR
C
L1 T1
(41)
COMPRESSOR
C4
OVERLOAD
CONTACTOR
CONTACTS
(49)
POTENTIAL
RELAY
R
(45)
S
C5
C2
C4
(61)
(62)
POTENTIAL
RELAY
RUN
C1
CAPACITOR
(31)
START
CAPACITOR
SV3123
1A. Water Flush (45 Seconds)
Toggle Switch
ICE
Bin Level Probe
Control Board Relays
Open (No Ice Contact)
#1
Contactor Coil
Compressor
Open / OFF
OFF
Condenser Fan Motor
Dump Valve
OFF
#2
#3
#4
ON
Gear Motor
ON
Water Float Valve Solenoid Coil
OFF
6-10
Part No. 80-1214-3
Revised 8/2003
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Section 6
Electrical System
Initial Start-Up or Start-Up After
Automatic Shut-Off (cont.)
L1
L2 (N)
GROUND
(21)
1B. WATER FILL
RELAY
K2
After 45 seconds the float valve
solenoid is energized.
HIGH
PRESSURE
CUT-OUT
CONTACTOR
COIL
RELAY
K1
C4
(90)
(95)
(65)
POTENTIAL
RELAY
10 AMP
FUSE
GEARMOTOR
(25)
(46)
(21)
(22)
(43)
RUN
CAPACITOR
RELAY
K3
RELAY K4
WATER FLOAT
VALVE COIL
(52)
(56)
C4
POTENTIAL
RELAY
(22)
(55)
(51)
FAN MOTOR
(AIR-COOLED ONLY)
DUMP VALVE COIL
CONTACTOR
COIL
FAN CYCLE
CONTROL
RUN CAPACITOR
C
L1 T1
(41)
COMPRESSOR
C4
OVERLOAD
CONTACTOR
CONTACTS
POTENTIAL
RELAY
R
(45)
S
C5
C2
(49)
C4
(61)
(62)
POTENTIAL
RELAY
RUN
C1
CAPACITOR
(31)
START
CAPACITOR
SV3124
1B. Water Fill (Until Water Contacts Water Level Probe)
Toggle Switch
ICE
Bin Level Probe
Control Board Relays
Open (No Ice Contact)
#1
Contactor Coil
Compressor
Open / OFF
OFF
Condenser Fan Motor
Dump Valve
OFF
#2
#3
#4
OFF
Gear Motor
ON
Water Float Valve Solenoid Coil
ON
Part No. 80-1214-3
6-11
Revised 8/2003
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Electrical System
Section 6
L1
Freeze Cycle
L2 (N)
GROUND
(21)
2. FREEZE
The gear motor, compressor,
condenser fan motor and water float
valve solenoid remain energized as
the ice machine makes ice. The
water float valve will open and close
automatically to maintain the proper
water level.
RELAY
K2
HIGH
PRESSURE
CUT-OUT
CONTACTOR
COIL
RELAY
K1
C4
(90)
(95)
(65)
POTENTIAL
RELAY
10 AMP
FUSE
GEARMOTOR
(25)
(46)
(21)
(22)
(43)
RUN
CAPACITOR
RELAY
K3
RELAY K4
WATER FLOAT
VALVE COIL
(52)
(56)
C4
POTENTIAL
RELAY
(22)
(55)
(51)
FAN MOTOR
(AIR-COOLED ONLY)
DUMP VALVE COIL
CONTACTOR
COIL
FAN CYCLE
CONTROL
RUN CAPACITOR
C
L1 T1
(41)
COMPRESSOR
C4
OVERLOAD
CONTACTOR
CONTACTS
POTENTIAL
RELAY
R
(45)
S
C5
C2
(49)
C4
(61)
(62)
POTENTIAL
RELAY
RUN
C1
CAPACITOR
(31)
START
CAPACITOR
SV3125
2. Freeze (Until Ice Contacts Bin Level Probe for 30 Continuous Seconds)
Toggle Switch
ICE
Bin Level Probe
Control Board Relays
Open (No Ice Contact)
#1
Contactor Coil
Compressor
Closed / ON
ON
Condenser Fan Motor
Dump Valve
ON
#2
#3
#4
OFF
Gear Motor
ON
Water Float Valve Solenoid Coil
ON
6-12
Part No. 80-1214-3
Revised 8/2003
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Section 6
Electrical System
Automatic Shut-Off
L1
L2 (N)
GROUND
(21)
3A. ICE RUN OUT
Ice will build up in the bin until it
contacts the bin level probe. After ice
contacts the bin level probe for 30
continuous seconds the compressor
de-energizes. To allow excess ice to
run out, the gear motor and the water
float valve solenoid remain energized
for an additional 45 seconds, then
de-energize.
RELAY
K2
HIGH
CONTACTOR
COIL
RELAY
K1
PRESSURE
CUT-OUT
C4
(90)
(95)
(65)
POTENTIAL
RELAY
10 AMP
FUSE
GEARMOTOR
(25)
(46)
(21)
(22)
(43)
RUN
CAPACITOR
RELAY
K3
RELAY K4
WATER FLOAT
VALVE COIL
(52)
(56)
C4
POTENTIAL
RELAY
(22)
(55)
(51)
FAN MOTOR
(AIR-COOLED ONLY)
DUMP VALVE COIL
CONTACTOR
COIL
FAN CYCLE
CONTROL
RUN CAPACITOR
C
L1 T1
(41)
COMPRESSOR
C4
OVERLOAD
CONTACTOR
CONTACTS
POTENTIAL
RELAY
R
(45)
S
C5
C2
(49)
C4
(61)
(62)
POTENTIAL
RELAY
RUN
C1
CAPACITOR
(31)
START
CAPACITOR
SV3126
3A. Ice Run Out (45 Seconds)
Toggle Switch
ICE
Bin Level Probe
Control Board Relays
Closed (Ice Contacting Probe)
#1
Contactor Coil
Open / OFF
OFF
Compressor
Condenser Fan Motor
Dump Valve
OFF
#2
#3
#4
OFF
Gear Motor
ON
Water Float Valve Solenoid Coil
ON
Part No. 80-1214-3
6-13
Revised 8/2003
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Electrical System
Section 6
Automatic Shut-Off
L1
L2 (N)
GROUND
(21)
3B. DRAIN EVAPORATOR
To allow water to drain from the
evaporator, the dump valve energizes
for 45 seconds, then de-energizes.
RELAY
K2
HIGH
PRESSURE
CUT-OUT
CONTACTOR
COIL
RELAY
K1
C4
(90)
(95)
(65)
POTENTIAL
RELAY
10 AMP
FUSE
GEARMOTOR
(25)
(46)
(21)
(22)
(43)
RUN
CAPACITOR
RELAY
K3
RELAY K4
WATER FLOAT
VALVE COIL
(52)
(56)
C4
POTENTIAL
RELAY
(22)
(55)
(51)
FAN MOTOR
(AIR-COOLED ONLY)
DUMP VALVE COIL
CONTACTOR
COIL
FAN CYCLE
CONTROL
RUN CAPACITOR
C
L1 T1
(41)
COMPRESSOR
C4
OVERLOAD
CONTACTOR
CONTACTS
(49)
POTENTIAL
RELAY
R
(45)
S
C5
C2
C4
(61)
(62)
POTENTIAL
RELAY
RUN
C1
CAPACITOR
(31)
SV3127
START
CAPACITOR
3B. Drain Evaporator (45 Seconds)
Toggle Switch
ICE
Bin Level Probe
Control Board Relays
Closed (Ice Contacting Probe)
#1
Contactor Coil
Open / OFF
OFF
Compressor
Condenser Fan Motor
Dump Valve
OFF
#2
#3
#4
OFF
Gear Motor
ON
Water Float Valve Solenoid Coil
OFF
6-14
Part No. 80-1214-3
Revised 8/2003
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Section 6
Electrical System
Automatic Shut-Off
L1
L2 (N)
GROUND
(21)
An 8 minute lockout starts when the
compressor de-energizes. When the
ice drops away from the bin level
probe the ice machine will begin an
initial start-up cycle, provided the “8
minute lock-out” has expired.
RELAY
K2
HIGH
PRESSURE
CUT-OUT
CONTACTOR
COIL
RELAY
K1
C4
(90)
(95)
(65)
POTENTIAL
RELAY
10 AMP
FUSE
8 Minute Lock-out
GEARMOTOR
(25)
(46)
(21)
(22)
(43)
The bin level light will flash until the 8
minute lock-out expires.
RUN
CAPACITOR
RELAY
K3
RELAY K4
After the 8 minute lock-out expires
the bin level light will de-energize.
WATER FLOAT
VALVE COIL
(52)
(56)
The 8 minute lock-out time can be
overridden by moving the ON/OFF/
ICE toggle switch from ICE to OFF
then back to ICE.
C4
POTENTIAL
RELAY
(22)
(55)
(51)
FAN MOTOR
(AIR-COOLED ONLY)
DUMP VALVE COIL
CONTACTOR
COIL
FAN CYCLE
CONTROL
RUN CAPACITOR
C
L1 T1
(41)
COMPRESSOR
C4
OVERLOAD
CONTACTOR
CONTACTS
(49)
POTENTIAL
RELAY
R
(45)
S
C5
C2
C4
(61)
(62)
POTENTIAL
RELAY
RUN
C1
CAPACITOR
(31)
START
CAPACITOR
SV3128
Automatic Shut-Off (Until Ice No Longer Contacts Bin Level Probe)
Toggle Switch
ICE
Bin Level Probe
Control Board Relays
Closed (Ice Contacting Probe)
#1
Contactor Coil
Open / OFF
OFF
Compressor
Condenser Fan Motor
Dump Valve
OFF
#2
#3
#4
OFF
Gear Motor
OFF
Water Float Valve Solenoid Coil
OFF
Part No. 80-1214-3
6-15
Revised 8/2003
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Electrical System
Section 6
Wiring Diagram Sequence of
Operation
L1
L2
GROUND
QF2200
LIQUID LINE
SOLENOID
RELAY
K2
Initial Start-Up or Start-Up After
Automatic Shut-Off
(54)
(53)
RELAY
K1
CENTRIFUGAL
SWITCH
1A. WATER FLUSH
(25)
Immediately after placing the toggle
switch in “ICE”, the dump valve
solenoid, and gearbox are energized.
After 45 seconds the dump valve de-
energizes.
7 AMP
FUSE
INTERNAL
OVERLOAD
START
RUN
(65)
RELAY
K3
RELAY K4
GEARMOTOR
WATER FLOAT
VALVE COIL
(52)
(56)
(22)
(55)
(51)
DUMP VALVE
COIL
SV3043
1A. Water Flush (45 Seconds)
Toggle Switch
ICE
Bin Level Probe
Control Board Relays
Open (No Ice Contact)
#1
#2
#3
#4
Liquid Line Solenoid Valve
Dump Valve
OFF
ON
Gear Motor
ON
Water Float Valve Solenoid Coil
OFF
6-16
Part No. 80-1214-3
Revised 8/2003
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Section 6
Electrical System
RFC2085
L1
Initial Start-Up
Remote Condensing Unit
L2
COMPRESSOR
CRANKCASE
HEATER
GROUND
(94)
(95)
1A. WATER FLUSH
The condensing unit is off.
(96)
(74)
CONTACTOR
COIL
HIGH PRESSURE
CUT-OUT
LOW PRESSURE
CUT-OUT
CONTACTOR
CONTACTS
CONTACTOR
CONTACTS
FAN MOTOR
RUN
CAPACITOR
(50)
(49)
RUN
CAPACITOR
COMPRESSOR
(47)
S
C
(46)
(45)
R
(48)
OVERLOAD
(44)
5
2
1
START
CAPACITOR
RELAY
(43)
SV3040
1A. Water Flush (45 Seconds)
High Pressure Control
Low Pressure Control
Contactor Coil
CLOSED
OPEN
OPEN / OFF
OFF
Compressor
Condenser Fan Motor
OFF
Part No. 80-1214-3
6-17
Revised 8/2003
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Electrical System
Section 6
QF2200
L2
L1
Initial Start-Up
1B. WATER FILL
GROUND
LIQUID LINE
SOLENOID
After 45 seconds the water float valve
solenoid is energized. When water
contacts the water level probe the
liquid line solenoid valve energizes
and remains on throughout the
Freeze Cycle.
RELAY
K2
(54)
(53)
RELAY
K1
CENTRIFUGAL
SWITCH
(25)
7 AMP
FUSE
INTERNAL
OVERLOAD
START
RUN
(65)
RELAY
K3
RELAY K4
GEARMOTOR
(52)
WATER FLOAT
VALVE COIL
(56)
(22)
(55)
(51)
DUMP VALVE
COIL
SV3044
1B. Water Fill (Until Water Contacts Water Level Probe)
Toggle Switch
ICE
Bin Level Probe
Control Board Relays
Open (No Ice Contact)
#1
#2
#3
#4
Liquid Line Solenoid Valve
OFF
OFF
ON
Dump Valve
Gear Motor
Water Float Valve Solenoid Coil
ON
6-18
Part No. 80-1214-3
Revised 8/2003
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Section 6
Electrical System
RFC2085
L1
L2
Initial Start-Up
COMPRESSOR
CRANKCASE
HEATER
GROUND
(94)
(95)
1B. WATER FILL
The condensing unit is off.
(96)
(74)
CONTACTOR
COIL
LOW PRESSURE
CUT-OUT
HIGH PRESSURE
CUT-OUT
CONTACTOR
CONTACTS
CONTACTOR
CONTACTS
FAN MOTOR
RUN
CAPACITOR
(50)
(49)
RUN
CAPACITOR
COMPRESSOR
(47)
S
C
(46)
(45)
R
(48)
OVERLOAD
(44)
5
2
1
START
CAPACITOR
RELAY
(43)
SV3040
1B. Water Flush (Until Water Contacts Water Level Probe)
High Pressure Control
Low Pressure Control
Contactor Coil
CLOSED
OPEN
OPEN / OFF
OFF
Compressor
Condenser Fan Motor
OFF
Part No. 80-1214-3
6-19
Revised 8/2003
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Electrical System
Section 6
QF2200
L2
L1
GROUND
Freeze Cycle
2. FREEZE
LIQUID LINE
SOLENOID
RELAY
K2
The gear motor, liquid line solenoid
valve and water float valve solenoid
remain energized as the ice machine
makes ice. The water float valve will
open and close automatically to
maintain the proper water level.
(54)
(53)
RELAY
K1
CENTRIFUGAL
SWITCH
(25)
7 AMP
FUSE
INTERNAL
OVERLOAD
START
RUN
(65)
RELAY
K3
RELAY K4
GEARMOTOR
WATER FLOAT
VALVE COIL
(52)
(56)
(22)
(55)
(51)
DUMP VALVE
COIL
SV3046
2. Freeze (Until Ice Contacts Bin Level Probe for 30 Continuous Seconds)
Toggle Switch
ICE
Bin Level Probe
Control Board Relays
Open (No Ice Contact)
#1
#2
#3
#4
Liquid Line Solenoid Valve
ON
OFF
ON
ON
Dump Valve
Gear Motor
Water Float Valve Solenoid Coil
6-20
Part No. 80-1214-3
Revised 8/2003
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Section 6
Electrical System
RFC2085
L1
Freeze Cycle
2. FREEZE
L2
COMPRESSOR
CRANKCASE
HEATER
GROUND
(94)
(95)
Refrigerant pressure exceeds the low
pressure control setpoint. The
contactor coil energizes and the
contacts close. The compressor and
condenser fan motor energize and
remain on throughout the entire
freeze cycle.
(96)
(74)
CONTACTOR
COIL
LOW PRESSURE
CUT-OUT
HIGH PRESSURE
CUT-OUT
CONTACTOR
CONTACTS
CONTACTOR
CONTACTS
FAN MOTOR
RUN
CAPACITOR
(50)
(49)
RUN
CAPACITOR
COMPRESSOR
C
S
(47)
(46)
(45)
R
(48)
OVERLOAD
(44)
5
2
1
START
CAPACITOR
RELAY
(43)
SV3042
2. Freeze (Until Ice Contacts Bin Level Probe for 30 Continuous Seconds)
High Pressure Control
Low Pressure Control
Contactor Coil
CLOSED
CLOSED
CLOSED / ON
ON
Compressor
Condenser Fan Motor
ON
Part No. 80-1214-3
6-21
Revised 8/2003
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Electrical System
Section 6
QF2200
L2
L1
GROUND
Automatic Shut-Off
3A. ICE RUN OUT
LIQUID LINE
SOLENOID
RELAY
K2
Ice will build up in the bin until it
contacts the bin level probe. After ice
contacts the bin level probe for 30
continuous seconds the liquid line
solenoid valve de-energizes. To allow
excess ice to run out, the gear motor
and the water float valve solenoid
remain energized for an additional 4
minutes, then de-energize.
(54)
(53)
RELAY
K1
CENTRIFUGAL
SWITCH
(25)
7 AMP
FUSE
INTERNAL
OVERLOAD
START
RUN
(65)
RELAY
K3
RELAY K4
GEARMOTOR
WATER FLOAT
VALVE COIL
(52)
(56)
(22)
(55)
(51)
DUMP VALVE
COIL
SV3047
3A. ICE RUN OUT (45 Seconds)
Toggle Switch
ICE
Bin Level Probe
Control Board Relays
CLOSED ( Ice Contacting probe)
#1
#2
#3
#$
Liquid Line Solenoid Valve
Dump Valve
OFF
OFF
ON
Gear Motor
Water Float Valve Solenoid Coil
ON
6-22
Part No. 80-1214-3
Revised 8/2003
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Section 6
Electrical System
RFC2085
L1
L2
Automatic Shut-Off
COMPRESSOR
CRANKCASE
HEATER
GROUND
(94)
(95)
When the refrigerant pressure is low
enough to open the low-pressure
switch, the contactor coil is de-
energized and the compressor and
condenser fan motor stop.
(96)
(74)
CONTACTOR
COIL
LOW PRESSURE
CUT-OUT
HIGH PRESSURE
CUT-OUT
CONTACTOR
CONTACTS
CONTACTOR
CONTACTS
FAN MOTOR
RUN
CAPACITOR
(50)
(49)
RUN
CAPACITOR
COMPRESSOR
C
S
(47)
(46)
(45)
R
(48)
OVERLOAD
(44)
5
2
1
START
CAPACITOR
RELAY
(43)
SV3040
3. Automatic Shut-Off (45 Seconds)
High Pressure Control
Low Pressure Control
Contactor Coil
CLOSED
OPEN
OPEN / OFF
OFF
Compressor
Condenser Fan Motor
OFF
Part No. 80-1214-3
6-23
Revised 8/2003
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Electrical System
Section 6
QF2200
L1
L2
GROUND
Automatic Shut-Off
3B. WATER DRAIN
LIQUID LINE
SOLENOID
RELAY
K2
To allow water to drain from the
evaporator, the dump valve energizes
for 90 seconds, then de-energizes.
(54)
(53)
RELAY
K1
CENTRIFUGAL
SWITCH
(25)
An 8 minute lockout starts when the
compressor de-energizes. When the
ice drops away from the bin level
probe the ice machine will begin an
initial start-up cycle, provided the “8
minute lockout” has expired.
7 AMP
FUSE
INTERNAL
OVERLOAD
(65)
START
RUN
RELAY
K3
RELAY K4
GEARMOTOR
WATER FLOAT
VALVE COIL
(52)
(56)
(22)
(55)
(51)
DUMP VALVE
COIL
SV3048
3B. Water Drain (90 Seconds)
Toggle Switch
ICE
Bin Level Probe
Control Board Relays
CLOSED ( Ice Contacting probe)
#1
#2
#3
#$
Liquid Line Solenoid Valve
Dump Valve
OFF
ON
Gear Motor
OFF
OFF
Water Float Valve Solenoid Coil
6-24
Part No. 80-1214-3
Revised 8/2003
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Section 6
Electrical System
QF2200
L2
L1
Automatic Shut-Off
GROUND
An 8 minute lockout starts when the
compressor de-energizes. When the
ice drops away from the bin level
probe the ice machine will begin an
initial start-up cycle, provided the “8
minute lockout” has expired.
LIQUID LINE
SOLENOID
(53)
RELAY
K2
(54)
RELAY
K1
CENTRIFUGAL
SWITCH
(25)
7 AMP
FUSE
INTERNAL
OVERLOAD
8 Minute Lockout
START
RUN
(65)
The bin level light will flash until the 8
minute lockout expires. After the 8
minute lockout time can be
RELAY
K3
RELAY K4
GEARMOTOR
overridden by moving the ON/OFF/
CLEAN toggle switch for ICE to OFF
and back to ICE.
WATER FLOAT
VALVE COIL
(52)
(56)
(22)
(55)
(51)
DUMP VALVE
COIL
SV3048
Automatic Shut-Off (Until Ice No Longer Contacts Bin Level Probe)
Toggle Switch
ICE
Bin Level Probe
Control Board Relays
CLOSED ( Ice Contacting probe)
#1
#2
#3
#$
Liquid Line Solenoid Valve
OFF
OFF
OFF
OFF
Dump Valve
Gear Motor
Water Float Valve Solenoid Coil
Part No. 80-1214-3
6-25
Revised 8/2003
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Electrical System
Section 6
C1
Wiring Diagram Sequence of
Operation
GROUND
L1
C2
L2
LIQUID LINE
SOLENOID
QF2300
(54)
(53)
RELAY
K2
Initial Start-Up or Start-Up After
Automatic Shut-Off
(91)
EQUALIZATION
SOLENOID
(57)
(22)
(58)
RELAY
K1
1A. WATER FLUSH
(25)
CENTRIFUGAL
Immediately after placing the toggle
switch in “ICE”, the dump valve
solenoid, and gearbox are energized.
After 45 seconds the dump valve de-
energizes.
7 AMP
FUSE
SWITCH
START
RUN
INTERNAL
OVERLOAD
(65)
RELAY
K3
RELAY K4
GEARMOTOR
WATER FLOAT
VALVE
(52)
(22)
(56)
(55)
(51)
DUMP VALVE
SV2109
1A. Water Flush (45 Seconds)
Toggle Switch
ICE
Bin Level Probe
Control Board Relays
Open (No Ice Contact)
#1
#2
#3
#4
Liquid Line Solenoid Valve
Dump Valve
OFF
ON
Gear Motor
ON
Water Float Valve Solenoid Coil
OFF
6-26
Part No. 80-1214-3
Revised 8/2003
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Section 6
Electrical System
RFC2385
L1
Initial Start-Up
Remote Condensing Unit
L2
COMPRESSOR
CRANKCASE
HEATER
GROUND
(94)
(95)
C2
1A. WATER FLUSH
C1
Immediately after placing the toggle
switch in “ICE”, the dump valve
solenoid, and gearbox are energized.
After 45 seconds the dump valve de-
energizes.
(85)
(96)
(74)
CONTACTOR
COIL
HIGH PRESSURE
CUT-OUT
LOW PRESSURE
CUT-OUT
CONTACTOR
CONTACTS
CONTACTOR
CONTACTS
FAN MOTOR
RUN
CAPACITOR
(50)
(49)
RUN
CAPACITOR
COMPRESSOR
(47)
S
C
(46)
(45)
R
(48)
OVERLOAD
(44)
5
2
1
START
CAPACITOR
RELAY
(43)
SV2121
1A. Water Flush (45 Seconds)
High Pressure Control
Low Pressure Control
Contactor Coil
CLOSED
OPEN
OPEN / OFF
OFF
Compressor
Condenser Fan Motor
OFF
Part No. 80-1214-3
6-27
Revised 8/2003
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Electrical System
Section 6
QF2300
C1
GROUND
L1
Initial Start-Up
1B. WATER FILL
C2
L2
LIQUID LINE
SOLENOID
(54)
(53)
After 45 seconds the water float valve
solenoid is energized.
RELAY
K2
(91)
(65)
EQUALIZATION
SOLENOID
(57)
(22)
(58)
RELAY
K1
(25)
CENTRIFUGAL
7 AMP
FUSE
SWITCH
START
RUN
INTERNAL
OVERLOAD
RELAY
K3
RELAY K4
GEARMOTOR
WATER FLOAT
VALVE
(52)
(22)
(56)
(55)
(51)
DUMP VALVE
SV2110
1B. Water Fill (Until Water Contacts Water Level Probe)
Toggle Switch
ICE
Bin Level Probe
Control Board Relays
Open (No Ice Contact)
#1
#2
#3
#4
Liquid Line Solenoid Valve
OFF
OFF
ON
Dump Valve
Gear Motor
Water Float Valve Solenoid Coil
ON
6-28
Part No. 80-1214-3
Revised 8/2003
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Section 6
Electrical System
RFC2385
L1
L2
COMPRESSOR
CRANKCASE
HEATER
GROUND
(94)
Initial Start-Up
1B. WATER FILL
(95)
C2
C1
After 45 seconds the water float valve
solenoid is energized.
(85)
(96)
(74)
CONTACTOR
COIL
HIGH PRESSURE
CUT-OUT
LOW PRESSURE
CUT-OUT
CONTACTOR
CONTACTS
CONTACTOR
CONTACTS
FAN MOTOR
RUN
CAPACITOR
(50)
(49)
RUN
CAPACITOR
COMPRESSOR
(47)
S
C
(46)
(45)
R
(48)
OVERLOAD
(44)
5
2
1
START
CAPACITOR
RELAY
(43)
SV2121
1B. Water Flush (Until Water Contacts Water Level Probe)
High Pressure Control
Low Pressure Control
Contactor Coil
CLOSED
OPEN
OPEN / OFF
OFF
Compressor
Condenser Fan Motor
OFF
Part No. 80-1214-3
6-29
Revised 8/2003
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Electrical System
Section 6
QF2300 Ice Machine Head Section
Freeze Cycle
C1
GROUND
L1
C2
L2
2. FREEZE
LIQUID LINE
SOLENOID
When water contacts the water level
probe the liquid line solenoid valve,
equalization valve, compressor and
condenser fan motor energize. The
gear motor, compressor, condenser
fan motor and water float valve
solenoid remain energized as the ice
machine makes ice. The water float
valve will open and close
(54)
(53)
RELAY
K2
(91)
(65)
EQUALIZATION
SOLENOID
(57)
(22)
(58)
RELAY
K1
(25)
CENTRIFUGAL
7 AMP
FUSE
SWITCH
START
RUN
INTERNAL
OVERLOAD
RELAY
K3
RELAY K4
automatically to maintain the proper
water level.
GEARMOTOR
WATER FLOAT
VALVE
(56)
(52)
(22)
(55)
(51)
DUMP VALVE
SV2111
2. Freeze (Until Ice Contacts Bin Level Probe for 30 Continuous Seconds)
Toggle Switch
ICE
Bin Level Probe
Control Board Relays
Open (No Ice Contact)
#1
#2
#3
#4
Liquid Line Solenoid Valve
ON
OFF
ON
ON
Dump Valve
Gear Motor
Water Float Valve Solenoid Coil
6-30
Part No. 80-1214-3
Revised 8/2003
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Section 6
Electrical System
RFC2385
L1
Freeze Cycle
2. FREEZE
L2
COMPRESSOR
CRANKCASE
HEATER
GROUND
(94)
(95)
The compressor and condenser fan
motor remain energized during the
entire Freeze Cycle.
C1
C2
(85)
(96)
(74)
CONTACTOR
COIL
LOW PRESSURE
CUT-OUT
HIGH PRESSURE
CUT-OUT
CONTACTOR
CONTACTS
CONTACTOR
CONTACTS
FAN MOTOR
RUN
CAPACITOR
(50)
(49)
RUN
CAPACITOR
COMPRESSOR
C
S
(47)
(46)
(45)
R
(48)
OVERLOAD
(44)
5
2
1
START
CAPACITOR
RELAY
(43)
SV2122
2. Freeze (Until Ice Contacts Bin Level Probe for 30 Continuous Seconds)
High Pressure Control
Low Pressure Control
Contactor Coil
CLOSED
CLOSED
CLOSED / ON
ON
Compressor
Condenser Fan Motor
ON
Part No. 80-1214-3
6-31
Revised 8/2003
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Electrical System
Section 6
QF2300
C1
GROUND
L1
Automatic Shut-Off
3A. ICE RUN OUT
C2
L2
LIQUID LINE
SOLENOID
(54)
(53)
Ice will build up in the bin until it
contacts the bin level probe. After ice
contacts the bin level probe for 30
continuous seconds the liquid line
solenoid valve, equalization valve
and compressor de-energize. To
allow excess ice to run out, the gear
motor and the water float valve
solenoid remain energized for an
additional 4 minutes, then de-
energize.
RELAY
K2
(91)
(65)
EQUALIZATION
SOLENOID
(57)
(22)
(58)
RELAY
K1
(25)
CENTRIFUGAL
7 AMP
FUSE
SWITCH
START
RUN
INTERNAL
OVERLOAD
RELAY
K3
RELAY K4
GEARMOTOR
WATER FLOAT
VALVE
(52)
(22)
(56)
(55)
(51)
DUMP VALVE
SV2110
3A. ICE RUN OUT (45 Seconds)
Toggle Switch
ICE
Bin Level Probe
Control Board Relays
CLOSED ( Ice Contacting probe)
#1
#2
#3
#$
Liquid Line Solenoid Valve
Dump Valve
OFF
OFF
ON
Gear Motor
Water Float Valve Solenoid Coil
ON
6-32
Part No. 80-1214-3
Revised 8/2003
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Section 6
Electrical System
RFC2385
L1
L2
Automatic Shut-Off
COMPRESSOR
CRANKCASE
HEATER
GROUND
(94)
When the refrigerant pressure is low
enough to open the low-pressure
switch, the contactor coil is de-
energized and the compressor and
condenser fan motor stop.
(95)
C2
C1
(85)
(96)
(74)
CONTACTOR
COIL
HIGH PRESSURE
CUT-OUT
LOW PRESSURE
CUT-OUT
CONTACTOR
CONTACTS
CONTACTOR
CONTACTS
FAN MOTOR
RUN
CAPACITOR
(50)
(49)
RUN
CAPACITOR
COMPRESSOR
(47)
S
C
(46)
(45)
R
(48)
OVERLOAD
(44)
5
2
1
START
CAPACITOR
RELAY
(43)
SV2121
3. Automatic Shut-Off (45 Seconds)
High Pressure Control
Low Pressure Control
Contactor Coil
CLOSED
OPEN
OPEN / OFF
OFF
Compressor
Condenser Fan Motor
OFF
Part No. 80-1214-3
6-33
Revised 8/2003
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Electrical System
Section 6
QF2300
Automatic Shut-Off
3B. WATER DRAIN
C1
GROUND
L1
C2
L2
LIQUID LINE
SOLENOID
To allow water to drain from the
evaporator, the dump valve energizes
for 90 seconds, then de-energizes.
(54)
(53)
RELAY
K2
(91)
(65)
EQUALIZATION
SOLENOID
(57)
(22)
(58)
RELAY
K1
An 8 minute lockout starts when the
compressor de-energizes. When the
ice drops away from the bin level
probe the ice machine will begin an
initial start-up cycle, provided the “8
minute lockout” has expired.
(25)
CENTRIFUGAL
7 AMP
FUSE
SWITCH
START
RUN
INTERNAL
OVERLOAD
RELAY
K3
RELAY K4
GEARMOTOR
WATER FLOAT
VALVE
(52)
(22)
(56)
(55)
(51)
DUMP VALVE
SV2112
3B. Water Drain (90 Seconds)
Toggle Switch
ICE
Bin Level Probe
Control Board Relays
CLOSED ( Ice Contacting probe)
#1
#2
#3
#$
Liquid Line Solenoid Valve
Dump Valve
OFF
ON
Gear Motor
OFF
OFF
Water Float Valve Solenoid Coil
6-34
Part No. 80-1214-3
Revised 8/2003
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Section 6
Electrical System
QF2300
C1
GROUND
L1
Automatic Shut-Off
C2
L2
An 8 minute lockout starts when the
compressor de-energizes. When the
ice drops away from the bin level
probe the ice machine will begin an
initial start-up cycle, provided the “8
minute lockout” has expired.
LIQUID LINE
SOLENOID
(54)
(53)
RELAY
K2
(91)
(65)
EQUALIZATION
SOLENOID
(57)
(22)
(58)
RELAY
K1
(25)
CENTRIFUGAL
7 AMP
FUSE
SWITCH
START
RUN
8 Minute Lockout
INTERNAL
OVERLOAD
The bin level light will flash until the 8
minute lockout expires. After the 8
minute lockout time can be
overridden by moving the ON/OFF/
CLEAN toggle switch for ICE to OFF
and back to ICE.
RELAY
K3
RELAY K4
GEARMOTOR
WATER FLOAT
VALVE
(52)
(22)
(56)
(55)
(51)
DUMP VALVE
SV2113
Automatic Shut-Off (Until Ice No Longer Contacts Bin Level Probe)
Toggle Switch
ICE
Bin Level Probe
Control Board Relays
CLOSED ( Ice Contacting probe)
#1
#2
#3
#$
Liquid Line Solenoid Valve
OFF
OFF
OFF
OFF
Dump Valve
Gear Motor
Water Float Valve Solenoid Coil
Part No. 80-1214-3
6-35
Revised 8/2003
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Electrical System
Wiring Diagrams
Section 6
The following pages contain electrical wiring diagrams. Be sure you are referring to the correct diagram for the ice
machine which you are servicing.
!
Warning
Always disconnect power before working on
electrical circuitry.
WIRING DIAGRAM LEGEND
The following symbols are used on all of the wiring diagrams:
*
Internal Compressor Overload
(Some models have external compressor overloads)
( )
Wire Number Designation
(The number is marked at each end of the wire)
—>>—
Multi-Pin Connection
(Electrical Box Side) —>>— (Compressor Compartment Side)
6-36
Part No. 80-1214-3
Revised 8/2003
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Section 6
Electrical System
ICE MACHINE HEAD SECTION
QF400
115V/60Hz/1Ph - 230V/50Hz/1Ph
(Diagram Shown During Freeze Cycle)
SEE SERIAL PLATE FOR VOLTAGE
L1
L2 (N)
GROUND
(21)
RELAY
K2
HIGH
PRESSURE
CUTOUT
RELAY
K1
CONTACTOR
COIL
(65)
(90)
(95)
10 AMP
FUSE
(25)
GEARMOTOR
RELAY
K3
RELAY
K4
(43)
(21)
(46)
(47)
(48)
GEARMOTOR
RUN
CAPACITOR
WATER
VALVE
(56)
(52)
(55)
(22)
(51)
FAN MOTOR
(AIR-COOLED ONLY)
DUMP
VALVE
COMPRESSOR
RELAY
L1 T1
(11)
(13)
(41)
(10)
CONTACTOR
CONTACTS
(12)
(14)
OVERLOAD
TOGGLE SWITCH WIRING
CONTROL
BOARD
CONNECTOR
RUN
START
(20)
(23)
ICE
OFF
CLEAN
(44)
TOGGLE
SWITCH
(19)
SV3094
Part No. 80-1214-3
6-37
Revised 8/2003
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Electrical System
Section 6
QC700/QF800
115V/60Hz/1Ph - 230V/50Hz/1Ph
(Diagram Shown During Freeze Cycle)
SEE SERIAL PLATE FOR VOLTAGE
L1
L2 (N)
GROUND
(21)
RELAY
K2
HIGH
RELAY
PRESSURE
K1
CONTACTOR
COIL
C4
CUTOUT
(90)
(95)
(65)
POTENTIAL
RELAY
10 AMP
FUSE
(25)
RELAY
K3
RELAY
K4
(4)
(46)
(21)
(22)
(3)
(2)
(43)
RUN
CAPACITOR
GEARMOTOR
GEARMOTOR
RELAY
WATER FLOAT VALVE COIL
(55)
(52)
(22)
(51)
(56)
C4
POTENTIAL
RELAY
FAN MOTOR
(AIR-COOLED ONLY)
DUMP VALVE
COIL
RUN
CAPACITOR
FAN CYCLE
CONTROL
RUN
CAPACITOR
(L1)
(T1)
(41)
C
COMPRESSOR
R
OVERLOAD
C5
C4
CONTACTOR
CONTACTS
(45)
POTENTIAL
RELAY
S
C2
(49)
(42)
(44)
TOGGLE SWITCH WIRING
COMPRESSOR
POTENTIAL
RELAY
(51)
C4
POTENTIAL
RELAY
CONTROL
BOARD
CONNECTOR
RUN
CAPACITOR
C1
(31)
(62)
(20)
(23)
ICE
START
CAPACITOR
OFF
CLEAN
TOGGLE
SWITCH
SV3006
(19)
6-38
Part No. 80-1214-3
Revised 8/2003
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Section 6
Electrical System
COMPRESSOR SECTION
QC700/QF800
115/60/1 - 230/50/1
(Diagram Shown During Freeze Cycle)
L2
FAN MOTOR
(AIR-COOLED ONLY)
(42)
COMPRESSOR
“START”
COMPRESSOR
POTENTIAL RELAY
(C5)
(C2)
(C1)
(43)
GEARMOTOR
COMPRESSOR
(45)
“RUN”
FAN MOTOR
(AIR-COOLED ONLY)
(C4)
(61)
(62)
(56)
(22)
(44)
(65)
RUN CAPACITOR
START CAPACITOR
(31)
(49)
COMPRESSOR
OVERLOAD
“COMMOM”
(41)
T1
CONTACTOR
COIL
(95)
CONTACTOR
(21)
(L1)
SV2005
Part No. 80-1214-3
6-39
Revised 8/2003
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Electrical System
Section 6
ICE MACHINE HEAD SECTION
QF2200
115/60/1 - 230/50/1
(Diagram Shown During Freeze Cycle)
SEE SERIAL PLATE FOR VOLTAGE
L2 (N)
(L1)
GROUND
(21)
LIQUID LINE
SOLENOID
RELAY
K2
(54)
(53)
RELAY
K1
10 AMP
FUSE
CENTRIFICAL
SWITCH
RELAY
K3
START
RELAY
K4
(65)
RUN
INTERNAL
OVERLOAD
GEARMOTOR
WATER VALVE
(52)
(56)
(55)
(22)
(51)
DUMP VALVE
TOGGLE SWITCH WIRING
CONTROL
BOARD
CONNECTOR
(20)
(23)
ICE
OFF
CLEAN
TOGGLE
SWITCH
(19)
SV3012
6-40
Part No. 80-1214-3
Revised 8/2003
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Section 6
Electrical System
RFC2085
230V/60HZ/1PH - 230/50/1
(Diagram Shown During Freeze Cycle)
L1
L2
COMPRESSOR
CRANKCASE
HEATER
(94)
(95)
CONTACTOR
COIL
(96)
(74)
HIGH PRESSURE
CUTOUT
LOW PRESSURE
CUTOUT
FAN MOTOR
CONTACTOR
CONTACTS
CONTACTOR
CONTACTS
RUN CAPACITOR
(50)
(49)
COMPRESSOR
RUN CAPACITOR
C
(47)
(46)
S
(45)
R
OVERLOAD
(44)
START CAPACITOR
(48)
5
2
1
RELAY
(43)
SV3014
Part No. 80-1214-3
6-41
Revised 8/2003
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Electrical System
Section 6
RFC2085
208-230V/60HZ/3PH
(Diagram Shown During Freeze Cycle)
L1
L2
L3
COMPRESSOR
CRANKCASE
(95)
HEATER
(94)
(96)
(74)
CONTACTOR
COIL
HIGH PRESSURE
CUTOUT
LOW PRESSURE
CUTOUT
L1
L2
L3
CONTACTOR
CONTACTS
T3
T1
COMPRESSOR
T2
FAN MOTOR
RUN CAPACITOR
SV3013
6-42
Part No. 80-1214-3
Revised 8/2003
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Section 6
Electrical System
ICE MACHINE HEAD SECTION
QF2300
115/60/1 - 230/50/1
(Diagram Shown During Freeze Cycle)
SEE SERIAL PLATE FOR VOLTAGE
C1
L2
(L1)
C2
GROUND
LIQUID LINE
SOLENOID
(91)
(54)
(58)
(53)
(57)
RELAY
K2
EQUALIZATION
SOLENOID
(51)
(22)
RELAY
K1
CENTRIFICAL
SWITCH
7 AMP
FUSE
(22)
RELAY
K3
RELAY
K4
START
RUN
(65)
INTERNAL
OVERLOAD
GEARMOTOR
WATER VALVE
(52)
(22)
(51)
(56)
(55)
DUMP VALVE
TOGGLE SWITCH WIRING
CONTROL
BOARD
CONNECTOR
(20)
(23)
ICE
OFF
CLEAN
TOGGLE
SWITCH
(19)
SV3012
Part No. 80-1214-3
6-43
Revised 8/2003
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Electrical System
Section 6
RFC2385
230V/60HZ/1PH - 230/50/1
(Diagram Shown During Freeze Cycle)
L1
L2
COMPRESSOR
CRANKCASE
HEATER
(94)
(95)
C1
C2
CONTACTOR
COIL
HIGH PRESSURE
CUTOUT
(85)
(96)
(74)
FAN MOTOR
CONTACTOR
CONTACTS
CONTACTOR
CONTACTS
RUN CAPACITOR
(50)
(49)
COMPRESSOR
RUN CAPACITOR
(47)
(46)
C
S
(45)
R
OVERLOAD
(44)
(48)
5
2
1
START CAPACITOR
RELAY
(43)
SV2107a
6-44
Part No. 80-1214-3
Revised 8/2003
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Section 6
Electrical System
RFC2385
208-230V/60HZ/3PH
(Diagram Shown During Freeze Cycle)
L1
L2
L3
COMPRESSOR
CRANKCASE
(95)
HEATER
(94)
C2
C1
CONTACTOR
COIL
HIGH PRESSURE
CUTOUT
(85)
(74)
(96)
L1
L2
L3
CONTACTOR
CONTACTS
T3
T1
COMPRESSOR
T2
FAN MOTOR
RUN CAPACITOR
SV2108a
Part No. 80-1214-3
6-45
Revised 8/2003
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Electrical System
Control Board
Section 6
MAIN FUSE
AC LINE
VOLTAGE
ELECTRICAL
PLUG
WATER LEVEL
SENSOR
YELLOW
GREEN
GREEN
RED
CLEAN LIGHT
FULL BIN LIGHT
DISCHARGE TEMP LIGHT
COMPRESSOR LIGHT
BIN LEVEL
SENSOR
RED
WATER SOLENOID LIGHT
WATER LEVEL LIGHT
GREEN
RED
DUMP VALVE LIGHT
SPEED LIGHT
GREEN
RED
GEARMOTOR LIGHT
TEMPERATURE SENSOR
(RESISTOR QF2300 ONLY)
(20)
ICE
OFF
(23)
(19)
CLEAN
MOTOR SPEED
SENSOR
TOGGLE
SWITCH
6-46
Part No. 80-1214-3
Revised 8/2003
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Section 6
Electrical System
Component Specifications and Diagnostics
ICE/OFF/CLEAN TOGGLE SWITCH
Function
BIN LEVEL PROBE
Function
The switch is used to place the ice machine in ICE, OFF
or CLEAN mode of operation.
The bin level probe shuts off the ice machine after the
bin fills with ice.
Specifications
To start ice making, the bin level probe must be open
(Bin Level light off). If the probe is closed (Bin Level light
on) when the toggle switch is moved to ICE, the control
system waits until the bin level probe opens (Bin Level
light off) before starting an ice making sequence. If the
bin level probe is disconnected from the circuit board,
the ice machine will not start. This prevents overfilling
the bin with ice.
Single-pole, single-throw switch. The switch is
connected into a varying low D.C. voltage circuit.
Check Procedure
NOTE: Because of a wide variation in D.C. voltage, it is
not recommended that voltage is used to check toggle
switch operation.
FAILURE MODES
1. Inspect the toggle switch for correct wiring.
Bin Level Probe Open or Disconnected
2. Isolate the toggle switch by disconnecting all wires
from the switch, or by disconnecting the Molex
connector from the control board.
The ice machine will not start and continuously flashes
the Bin Level light. Opening the bin level probe for
15 continuous seconds in the Freeze cycle will initiate an
Automatic Shut-Off sequence.
3. Check across the toggle switch terminals using a
calibrated ohm meter. Note where the wire numbers
are connected to the switch terminals, or refer to the
wiring diagram to take proper readings.
Bin Level Probe Closed or Shorted
The ice machine will not start and the Bin Level light is
energized.
Switch Setting
Terminals
19-20
19-23
20-23
19-20
19-23
20-23
19-20
19-23
20-23
Ohm Reading
Closed
Open
Shorting the probe for 30 continuous seconds in the
Freeze cycle will initiate an Automatic Shut-Off
sequence.
ICE
Open
CHECK PROCEDURE
Open
CLEAN
OFF
Closed
Open
Bin Level Probe Open or Disconnected
The ice machine will not start and continuously flashes
the Bin Level light.
Open
Open
1. Move toggle switch from OFF to ICE to OFF to ICE
to verify ice machine is not in an 8-minute lockout.
Open
4. Replace the toggle switch if ohm readings do not
match all three switch settings.
Control Board
Cause
Bin Level Light
Ice machine was in an
Off
Automatic Shut-Off mode
(8-minute lockout).
Flashes
Go to step 2.
Part No. 80-1214-3
6-47
Revised 8/2003
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Electrical System
Section 6
2. Disconnect bin level probe from control board and
check continuity (ohms) from the female connector
to the bin level probe.
Control Board
Bin Level Light
Cause
On
Replace bin level probe.
Reconfirm control board is not
in an 8-minute lockout. Repeat
steps 1 – 4, then replace
control board.
Flashes
Bin Level Probe Closed or Shorted
The ice machine will not start and the Bin Level light is
energized continuously.
1. Verify ice is not in contact with bin level probe.
2. Disconnect bin level probe wire from the control
board.
CHECK FOR CONTINUITY
CONNECTOR TO GROUND.
Continuity
No
Cause
Replace bin level probe.
Go to step 3.
Yes
3. Remove bin level probe from ice chute and clean
with Manitowoc Ice Machine Cleaner and Sanitizer.
Rinse well with fresh water, reinstall and monitor the
Bin light.
Control Board
Cause
DISCONNECT BIN LEVEL PROBE
FROM CONTROL BOARD.
Bin Level Light
Bin level probe
needed cleaning.
Off
Control Board
Cause
Flashes
Go to step 4.
Bin Level Light
4. Disconnect bin level probe wire from the control
board and place a jumper from the bin level terminal
to ground.
Off
On
Clean bin level probe.
Replace control board.
6-48
Part No. 80-1214-3
Revised 8/2003
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Section 6
Electrical System
MOTOR SPEED SENSOR
Function
To verify coupling/auger RPM (revolutions per minute):
1. Verify line voltage is within 10% of ice machine
nameplate rating when low RPM is suspected.
The motor speed sensor verifies that the gearbox motor
is rotating at the correct speed.
2. Verify the gear motor run capacitor is functional.
3. Place identifying mark on coupling.
Failure Modes
MOTOR SPEED SENSOR OPEN OR DISCONNECTED
(ICE MACHINE WILL NOT START.)
4. Count coupling revolutions for 2 minutes.
5. Divide coupling revolutions by 2 (example:
31 coupling revolutions ÷ 2 = 15-1/2 RPM).
Performs initial start-up procedure. Ten to 15 seconds
after the ice machine enters Water Flush (1), the ice
machine will initiate an Automatic Shut-Off cycle, flash
the Speed light and remain off for 60 minutes. (Refer to
“Gear Motor Speed” for additional information.)
Minimum revolutions per minute:
QF400 = 9 RPM
QC700 = 15 RPM
MOTOR SPEED SENSOR CLOSED OR SHORTED
(ICE MACHINE WILL NOT START.)
QF800 = 15 RPM
QF2200/QF2300 = 11.6 RPM
Performs initial start-up procedure. Ten to 15 seconds
after the ice machine enters Water Flush (1), the ice
machine will initiate an Automatic Shut-Off cycle, flash
the Speed light and remain off for 60 minutes. (Refer to
“Gear Motor Speed” for additional information.)
Check Procedure
1. Allow time for the evaporator to warm. Disconnecting
power in the Freeze cycle will result in ice build-up
between the evaporator and auger.
Speed Sensor
QF400
2. Verify the motor speed sensor is in place and
securely attached to the motor.
3. Verify the gearmotor run capacitor is functional.
4. Place toggle switch in the OFF position and place an
identifying mark on the evaporator/gearbox coupling.
This will provide a reference point to verify the
coupler is rotating.
SV2046
Move the toggle switch to the ICE position and verify the
motor shaft and coupling are turning, then observe the
Speed light.
(If the gear motor and coupling will not rotate, the switch
is operating correctly.)
Speed light is:
Cause
On
This is normal operation.
after 3 to 5 seconds
Replace motor
speed sensor.
Off
On after 3 to 5 seconds
and control board
Replace control board.
terminates Freeze cycle
Part No. 80-1214-3
6-49
Revised 8/2003
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Electrical System
Section 6
WATER LEVEL PROBES
Function
The water level probe protects the compressor if water is not detected.
Water contacting the probes will complete the circuit and energize the Water Level Probe light.
There are two water level probes; one probe is connected to the circuit board and one probe is connected to the ice
machine ground.
Water level probe operation can be determined by watching the Water Level Probe light. The Water Level Probe light
is on when water contacts the probe, and off when no water is in contact with the probe. The Water Level Probe light
functions any time power is applied to the ice machine, regardless of toggle switch position.
During the Water Fill and Freeze cycle, the water level probe monitors the water level. The water float valve maintains
the correct water level. If the water level is incorrect, refer to “Water Float Valve.”
Failure Modes
WATER LEVEL PROBE OPEN OR DISCONNECTED (ICE MACHINE WILL NOT START COMPRESSOR.)
Performs initial start-up procedure. Ninety seconds after ice machine enters Water Fill (1B), the ice machine will
initiate an Automatic Shut-Off cycle, flash the Water Level Probe light and remain off for 60 minutes. (Refer to “No
Water” SafeGuard for additional information.)
WATER LEVEL PROBE CLOSED OR SHORTED (ICE MACHINE WILL CONTINUE TO RUN.)
If the ice machine runs out of water with the water level probe shorted, the ice machine will initiate an Automatic Shut-
Off cycle and flash the Temperature light. (Refer to “Temperature is Too High or Too Low SafeGuard” for additional
information.)
CHECK PROCEDURE
WATER LEVEL PROBE OPEN OR DISCONNECTED
1. Determine which water level probe is connected to “water level” on the control board.
2. Remove water level probe from reservoir and place jumper wire from the water level probe to ground.
3. Move the toggle switch to the ICE position, wait
45 seconds, and then monitor the Water Level Probe light.
Step 3 Jumper water level probe to ground
Water Level light is:
Compressor
Cause
Control system is operating normally
Verify water level is correct.
On
Energizes
Remains
de-energized
Off
Proceed to step 4.
JUMPER FROM
WATER LEVEL
PROBE TO
GROUND
SV2042
WATER LEVEL
PROBE LIGHT
6-50
Part No. 80-1214-3
Revised 8/2003
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Section 6
Electrical System
4. Disconnect water level probe from control board. Install jumper from control board “water level” terminal to
ground.
5. Move the toggle switch from ICE to OFF to ICE position. Wait 45 seconds, then monitor the Water Level Probe
light.
Step 5 Jumper “water level” terminal to ground
Water Level light is:
Compressor
Cause
Replace water level probe wiring.
(Verify defective component – ohm wire from
connector to connector.)
On
Off
Energizes
Remains de-energized
Replace control board.
DISCONNECT
WATER LEVEL PROBE.
JUMPER FROM
CONTROL BOARD
“WATER LEVEL” TO
GROUND
WATER LEVEL
PROBE LIGHT
SV2035
WATER LEVEL PROBE CLOSED OR SHORTED
1. Disconnect the water level probe from the control board.
2. Move the toggle switch to the ICE position, wait 45 seconds and then monitor the Water Level Probe light.
Step 2 Disconnect water level probe from control board “water level” terminal
Water Level light is:
Compressor
Remains de-energized
Energizes
Cause
Off
On
Clean water level probe.
Replace control board.
DISCONNECT
WATER LEVEL PROBE.
WATER LEVEL
PROBE LIGHT
SV2036
Part No. 80-1214-3
6-51
Revised 8/2003
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Electrical System
Section 6
TEMPERATURE SENSOR
Function
TEMPERATURE/RESISTANCE CHART
As the temperature rises at the thermistor block, the
resistance drops.
The temperature sensor provides input to the control
board. The control board monitors the temperature
anytime the liquid line solenoid valve or compressor is
energized. When a temperature is sensed that is above
or below the correct temperature range, the ice machine
de-energizes.
Important
If the ohmmeter reads “OL,” check the scale setting on
the meter before assuming the thermistor is bad.
Temperature of Thermistor
Resistance
K Ohms
Temperature Ranges:
°C
°F
QF400/QC700/QF800 155°F to 255°F (68°C to 124°C)
QF2200 30°F to 123°F
(x 1000)
85.35 – 62.46
62.46 – 46.22
46.22 – 34.56
34.56 – 26.10
26.10 – 19.90
19.90 – 15.31
15.31 – 11.88
11.88 – 9.29
9.29 – 7.33
7.33 – 5.82
5.82 – 4.66
4.66 – 3.75
3.75 – 3.05
3.05 – 2.49
2.49 – 2.04
2.04 – 1.68
1.68 – 1.40
1.40 – 1.17
1.17 – 0.98
0.98 – 0.82
0.82 – 0.70
0.59 – 0.51
0.51 – 0.43
0.43 – 0.37
0.37 – 0.33
-17.77° – -12.22°
-12.22° – -6.66°
-6.66° – -1.11°
-1.11° – 4.44°
4.44° – 10.0°
10.0° – 15.55°
15.6° – 21.1°
21.1° – 26.7°
26.7° – 32.2°
32.2° – 37.8°
37.8° – 43.3°
43.3° – 48.9°
48.9° – 54.4°
54.4° – 60.0°
60.0° – 65.6°
65.6° – 71.1°
71.1° – 76.7°
76.7° – 82.2°
82.2° – 87.8°
87.8° – 93.3°
93.3° – 98.9°
104.4° – 110.0°
110.0° – 115.6°
115.6° – 121.1°
121.1° – 126.7°
0° – 10°
10° – 20°
Specifications
20° – 30°
10,000 Ohms at 77°F (25°C)
30° – 40°
40° – 50°
Caution
!
50° – 60°
Use only Manitowoc thermistors.
60° – 70°
70° – 80°
Check Procedure
80° – 90°
The thermistor must be securely attached and insulated
to operate properly.
90° – 100°
100° – 110°
110° – 120°
120° – 130°
130° – 140°
140° – 150°
150° – 160°
160° – 170°
170° – 180°
180° – 190°
190° – 200°
200° – 210°
220° – 230°
230° – 240°
240° – 250°
250° – 260°
Verify that the thermistor resistance is accurate and
corresponding to the high and low temperature ranges.
1. Disconnect the thermistor at the control board.
Connect the ohmmeter to the isolated thermistor
wire leads.
2. Using a temperature meter capable of taking
readings on curved copper lines, attach the
temperature meter-sensing device to the
refrigeration line next to the thermistor.
Important
Do not simply “insert” the sensing device under the
insulation. It must be attached to and reading the actual
temperature of the discharge line.
3. With the ice machine running, verify that the
temperature of the refrigeration line (step 2)
corresponds to the thermistor resistance reading
(step 1) as stated in the temperature/resistance
chart.
6-52
Part No. 80-1214-3
Revised 8/2003
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Section 6
Electrical System
CONTROL BOARD RELAYS
Function
MAIN FUSE
Function
The control board relays energize and de-energize
system components.
The control board fuse stops ice machine operation if
electrical components fail, causing high amp draw.
Specifications
Specifications
Relays are not field replaceable. There are four relays on
the control board:
The main fuse is 250 Volt, 10 amp.
Check Procedure
Relay
#1
#2
#3
#4
Controls
Contactor Coil
Water Dump Valve
Gear Motor
!
Warning
High (line) voltage is applied to the control board
(terminals #21 and #22) at all times. Removing the
control board fuse or moving the toggle switch to OFF
will not remove the power supplied to the control
board.
Float Valve Coil
Check Procedure
1. Leave all wiring connected and refer to the
Energized Parts Chart. Then verify:
1. If any control board lights are energized, the fuse is
good.
A. The relay should be energized.
!
Warning
B. The red control board LED is energized for the
relay contacts being tested.
Disconnect electrical power to the entire ice machine
before proceeding.
2. Check for line voltage at the control board.
2. Remove the fuse. Check the resistance across the
fuse with an ohm meter.
A. Insert one electrical test lead to test L2 (wire
#22).
Reading
Open (OL)
Closed (O)
Result
B. Insert one electrical test lead to test for voltage
through the contacts.
Replace fuse.
Fuse is good.
INSERT
TEST LEAD.
RELAY
CONTACTS
WIRE
#90
L2
WIRE #22
INSERT
TEST LEAD.
Voltage Reading
Result
Line Voltage*
Relay is good.
Relay is defective.
Replace control board.
No Voltage
*Refer to model/serial label for correct voltage.
Part No. 80-1214-3
6-53
Revised 8/2003
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Electrical System
Section 6
WATER FLOAT VALVE
Function
WATER LEVEL CHECK
The float valve maintains the correct water level. The
water level must allow the water level probes to maintain
water contact throughout the Freeze cycle. The water
level is factory set and normally will not require
adjustment. Check the water level during the Freeze
cycle. The water level is correct if the Water Level
indicator light is energized and no water is entering the
overflow tube. (Check for overflow water exiting the ice
machine drain line at the floor drain.)
The float valve maintains correct water level during the
Freeze cycle.
It allows the evaporator to drain completely during the
Automatic Shut-Off cycle.
Check Procedure
1. Verify water is supplied to the float valve, the water
inlet screen is clean, and the float and float arm are
free moving.
If adjustments are necessary:
A. Rotate float clockwise to increase water level.
2. Refer to the Energized Parts Chart and verify the
following:
B. Rotate float counterclockwise to decrease water
level.
•
•
The float valve coil should be energized.
Verify the outlet for the water float valve is at a 20° to 30°
angle to prevent contact with the float.
The red water valve LED on the control board is
energized.
3. Check for line voltage at float valve coil. This test
must be performed within 90 seconds of the water
float valve energizing. If no water contacts the water
level probes within 90 seconds, the valve will de-
energize.
WATER FLOAT
VALVE SOLENOID
COIL
VERIFY WATER
OUTLET DOES
NOT POINT
STRAIGHTDOWN;
IT MAY
INTERFERE WITH
FLOAT.
WATER FLOAT
VALVE
Step 3 Check for Line Voltage
Voltage Reading
Result
Replace Solenoid Coil
or
Line Voltage
Replace Valve
See
WATER LEVEL
PROBE
No Voltage
“Control Board Relays”
for further diagnostics.
WATER FLOAT
ROTATE TO
ADJUST WATER
LEVEL.
6-54
Part No. 80-1214-3
Revised 8/2003
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Section 6
Electrical System
HIGH PRESSURE CONTROL (HPCO)
Function
LOW PRESSURE CUT-OUT CONTROL (LPCO)
RFC2085/RFC2385 (QF2200/QF2300) ONLY
Function
The high pressure control stops the ice machine if
subjected to excessive high-side pressure.
Energizes and de-energizes the contactor coil when suction
pressure rises above or falls below setpoint.
The HPCO control is normally closed, and opens on a
rise in discharge pressure.
The LPCO control is closed at pressures above setpoint and
opens at pressures below setpoint.
Specifications
Specifications
Cut-out:450 psig 10
Cut-In
Cut-Out
(Open)
Model
(Close)
Cut-in:Automatic reset
RFC2085
RFC2385
(must be below 300 psig to reset).
Check Procedure
22 psig+3
7 psig +3
Check Procedure
1. Set ICE/OFF/CLEAN switch to OFF.
2. Disconnect main power supply to the ice machine.
3. Connect manifold gauges to access valves.
1. Connect manifold gauges at suction and discharge
access valves at the condensing unit.
2. Set ICE/OFF/CLEAN switch to OFF.
4. Hook voltmeter in parallel across the HPCO, leaving
wires attached.
3. The liquid line solenoid valve will de-energize and
the suction pressure will begin to decrease. The low-
pressure control will open at the listed specification.
5. Reconnect main power supply to the ice machine.
4. Use the manifold gauge set to increase suction
pressure. Feed refrigerant from the high side access
valve to the low side access valve. Add refrigerant in
small increments to allow the low side pressure to
be monitored. The low pressure control will close at
the listed specification.
6. Set ICE/OFF/CLEAN switch to ICE and block
condenser with cardboard or similar material.
7. No air flowing through the condenser will cause the
HPCO control to open because of excessive
pressure. Watch the pressure gauge and record the
cut-out pressure.
Replace the LPCO control if it:
!
Warning
•
•
Will not close at the specified set point.
Does not open at the specified set point.
If discharge pressure exceeds 460 psig and the
HPCO control does not cut out, set ICE/OFF/CLEAN
switch to OFF to stop ice machine operation.
Replace the HPCO control if it:
•
•
Will not reset (below 300 psig).
Does not open at the specified cut-out point.
Part No. 80-1214-3
6-55
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Electrical System
Section 6
FAN CYCLE CONTROL
Function
Cycles the condenser fan motor on and off to maintain
proper operating discharge pressure.
The fan cycling control closes on an increase in
discharge pressure and opens on a decrease in
discharge pressure.
Model
QF0800
QC0700
Cut-In (Close)
Cut-Out (Open)
250 psig +/- 5
200 psig+/- 5
Check Procedure
1. Verify fan motor windings are not open or grounded
and fan spins freely.
2. Connect a manifold gauge set to the ice machine.
3. Hook a voltmeter in parallel across the fan cycle
control, leaving wires attached.
4. Refer to chart below:
Discharge
Reading Should Be:
Fan Should Be:
Pressure:
above cut-in
below cut-in
0 volts
running
off
line voltage
6-56
Part No. 80-1214-3
Revised 8/2003
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Section 6
Electrical System
COMPRESSOR ELECTRICAL DIAGNOSTICS
The compressor will not start or will trip repeatedly on overload.
Check Resistance (Ohm) Values
Determine if the Compressor is Seized
NOTE: Compressor windings can have very low ohm
values. Use a properly calibrated meter.
Check the amp draw while the compressor is trying to
start.
Perform the resistance test after the compressor cools.
The compressor dome should be cool enough to touch
(below 120°F/49°C) to assure that the overload is closed
and the resistance readings will be accurate.
COMPRESSOR DRAWING LOCKED ROTOR
The two likely causes of this are:
•
•
Defective starting component
Mechanically seized compressor
SINGLE PHASE COMPRESSORS
To determine which you have:
1. Install high and low side gauges.
2. Try to start the compressor.
3. Watch the pressures closely.
1. Disconnect power from the condensing unit and
remove the wires from the compressor terminals.
2. The resistance values must be within published
guidelines for the compressor. The resistance
values between C and S and between C and R,
when added together, should equal the resistance
value between S and R.
A. If the pressures do not move, the compressor is
seized. Replace the compressor.
3. If the overload is open, there will be a resistance
reading between S and R, and open readings
between C and S and between C and R. Allow the
compressor to cool, then check the readings again.
B. If the pressures move, the compressor is turning
slowly and is not seized. Check the capacitors
and start relay.
COMPRESSOR DRAWING HIGH AMPS
THREE PHASE COMPRESSORS
The continuous amperage draw on start-up should not
be near the maximum fuse size indicated on the serial
tag.
1. Disconnect power from the condensing unit and
remove the wires from the compressor terminals.
2. The resistance values must be within published
guidelines for the compressor. The resistance
values between L1 and L2, between L2 and L3, and
between L3 and L1 should all be equal.
The voltage when the compressor is trying to start must
be within 10% of the nameplate voltage.
Diagnosing Capacitors
3. If the overload is open, there will be open readings
between L1 and L2, between L2 and L3, and
between L3 and L1. Allow the compressor to cool,
then check the readings again.
•
If the compressor attempts to start, or hums and trips
the overload protector, check the starting
components before replacing the compressor.
•
Visual evidence of capacitor failure can include a
bulged terminal end or a ruptured membrane. Do not
assume a capacitor is good if no visual evidence is
present.
Check Motor Windings to Ground
Check continuity between all three terminals and the
compressor shell or copper refrigeration line. Scrape
metal surface to get good contact. If continuity is
present, the compressor windings are grounded and the
compressor should be replaced.
•
•
A good test is to install known good substitute
capacitor.
Use a capacitor tester when checking a suspect
capacitor. Clip the bleed resistor off the capacitor
terminals before testing.
Part No. 80-1214-3
6-57
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Electrical System
Section 6
Diagnosing Start Components
If the compressor attempts to start, or hums and trips the
overload protector, check the start components before
replacing the compressor.
3. Check the relay coil. Measure the resistance
between terminals:
RFC2085/
RFC2385
CAPACITOR
QF400
QC700/QF800
1 & 2
(QF2200/QF2300)
•
Visual evidence of capacitor failure can include a
bulged terminal end or a ruptured membrane. Do not
assume a capacitor is good if no visual evidence is
present.
10 & 11
1 & 2
No resistance indicates an open coil. Replace the
relay.
•
•
A good test is to install a known good substitute
capacitor.
4. Replace control box cover and restore electrical
power to the ice machine.
Use a capacitor tester when checking a suspect
capacitor. Clip the bleed resistor off the capacitor
terminals before testing.
!
Warning
Replace control box cover before proceeding.
RELAY
5. Move toggle switch to the ICE position.
The relay has a set of contacts that connect and
disconnect the start capacitor from the compressor start
winding. The contacts on the relay are normally closed
(start capacitor in series with the start winding). The
relay senses the voltage generated by the start winding
and opens the contacts as the compressor motor starts.
The contacts remain open until the compressor is de-
energized.
6. The compressor start winding should energize for
less than 1 second. Continued high amperage draw
could indicate:
•
Low incoming power supply (Check voltage at
compressor start-up when load is greatest)
•
•
•
•
Defective relay
Defective capacitor
!
Warning
Defective compressor
Disconnect electrical power to the condensing unit
before proceeding.
Verify voltage and replace all start components.
7. If all of the previous tests are satisfactory and the
compressor will not operate or continue to operate,
replace the compressor.
Relay Operation Check
1. Disconnect wires from relay terminals.
2. Verify the contacts are closed by checking for
continuity between terminals:
RFC2085/
RFC2385
(QF2200/QF2300)
1 & 2
QF400
QC700/QF800
10 & 11
1 & 2
No continuity indicates open contacts. Replace the
relay.
6-58
Part No. 80-1214-3
Revised 8/2003
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Section 6
Electrical System
Diagnosing An Ice Machine That Will Not
Run
Diagnosing A Condensing Unit That Will
Not Run
QF400/QC700/QF800/QF2200/QF2300
RFC2085/RFC2385
If the ice machine water pump is not energized refer to
“Ice Machine Head Section Will Not Run”.
!
Warning
High (line) voltage is applied to the control board
(terminals #55 and #56) at all times. Removing
control board fuse or moving the toggle switch to
OFF will not remove the power supplied to the
control board.
1. Verify primary voltage is supplied to ice machine
condensing unit and the fuse/circuit breaker is
closed.
2. Verify the high-pressure cutout and low-pressure
(RFC2085 only) controls are closed. The HPCO and
LPCO are closed if primary line voltage is present at
the contactor coil terminals.
QF2200/QF2300 - If the gearmotor is energized but no
ice is produced, refer to “Diagnosing a Condensing Unit
That Will Not Run”.
3. Verify line voltage is present at the contactor coil.
4. Verify the contactor contacts are closed and line
voltage is present across all lines.
1. Verify primary voltage is supplied to ice machine
and the fuse/circuit breaker is closed.
5. Refer to compressor diagnostics.
2. Verify control board fuse is okay. If any control board
lights functions, the fuse is okay.
3. Verify the bin level control is connected to the control
board and the bin level light is off.
4. Verify ICE/OFF/CLEAN toggle switch functions
properly. Place the toggles switch in the ICE and
CLEAN positions and check for energized
components.
5. Verify low DC voltage is properly grounded. Loose
DC wire connections may intermittently stop the ice
machine.
6. Verify water is contacting the water level probes. The
compressor (QF2300 liquid line solenoid valve) will
not energize until water contacts the water level
probes.
Be sure Steps 1-5 were followed thoroughly. Intermittent
problems are not usually related to the control board.
Part No. 80-1214-3
6-59
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Electrical System
Section 6
THIS PAGE INTENTIONALLY LEFT BLANK
6-60
Part No. 80-1214-3
Revised 8/2003
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Section 7
Refrigeration System
Tubing Schematic
QF400/QC700/QF800
DRIER
EXPANSION
VALVE
EVAPORATOR
RECEIVER
(QF400)
CONDENSER
(AIR OR WATER)
COMPRESSOR
SV3082
Part No. 80-1214-3
7-1
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Refrigeration System
Section 7
QF2200/RFC2085
Condensing Unit
SUCTION LINE
FILTER
COMPRESSOR
CONDENSER
HEAD
PRESSURE
CONTROL
VALVE
S TRAP
REQUIRED
21’ OR
GREATER
RISE
Ice Machine Head Section
SUCTION
SHUT-OFF
VALVE
LIQUID LINE
SHUT-OFF
VALVE
LLSV
HEAT EXCHANGER
TXV
EVAPORATOR
DRIER
CHECK VALVE
RECEIVER
SERVICE
VALVE
RECEIVER
SV3015
7-2
Part No. 80-1214-3
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Section 7
Refrigeration System
QF2300/RFC2385
Condensing Unit
SUCTION LINE
FILTER
COMPRESSOR
CONDENSER
HEAD
PRESSURE
CONTROL
VALVE
SUCTION
ACCUMULATOR
S TRAP
REQUIRED
21’ OR
GREATER
RISE
Ice Machine Head Section
SUCTION
SHUT-OFF
VALVE
LIQUID LINE
SHUT-OFF
VALVE
LLSV
TXV
EVAPORATOR
DRIER
EQUALIZATION
VALVE
CHECK VALVE
RECEIVER
SERVICE
VALVE
RECEIVER
SV2105
Part No. 80-1214-3
7-3
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Refrigeration System
Section 7
Refrigeration System Diagnostics
General
When analyzing the refrigeration system, it is important to
understand that different refrigeration component
malfunctions may cause very similar symptoms.
2. An ice machine that is low on refrigerant may cause
a good expansion valve to starve. If a service
technician fails to verify the system charge, he may
replace the expansion valve in error.
Many external factors can make good refrigeration
components appear bad. These factors can include
improper installation, or water system malfunctions such
as hot incoming water supply or water loss.
During the replacement procedure, recovery,
evacuation and recharging are performed correctly.
The ice machine now functions normally. The
technician erroneously thinks that the problem was
properly diagnosed and corrected by replacing the
expansion valve.
The following two examples illustrate how similar
symptoms can result in a misdiagnosis.
1. An expansion valve bulb that is not securely
fastened to the suction line and/or not insulated will
cause a good expansion valve to flood. If a service
technician fails to check for proper expansion valve
bulb mounting, he may replace the expansion valve
in error.
The service technician's failure to check the ice
machine for a low refrigerant condition resulted in a
misdiagnosis and the needless replacement of a
good expansion valve.
The ice machine now functions normally. The
technician erroneously thinks that the problem was
properly diagnosed and corrected by replacing the
expansion valve. Actually, the problem (loose bulb)
was corrected when the technician properly
mounted the bulb of the replacement expansion
valve.
The service technician's failure to check the
expansion valve bulb for proper mounting (an
external check) resulted in a misdiagnosis and the
needless replacement of a good expansion valve.
7-4
Part No. 80-1214-3
Revised 8/2003
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Section 7
Refrigeration System
BEFORE BEGINNING SERVICE
ICE PRODUCTION/QUALITY CHECK
Ice machines may experience operational problems only
during certain times of the day or night. A machine may
function properly while it is being serviced, but
malfunctions later. Information provided by the user can
help the technician start in the right direction, and may
be a determining factor in the final diagnosis.
Quality Check
Ice quality will vary with ambient and water
temperatures, and is measured by the amount of excess
water in the ice. An easy test is to squeeze a handful of
ice. High quality ice releases only a small amount of
water. As ice quality drops, more water can be removed.
Ask these questions before beginning service:
Generally speaking, higher incoming water temperature
results in lower ice quality.
•
•
•
When does the ice machine malfunction? (night, day,
all the time, only during the Freeze cycle, etc.)
Lower water temperature results in higher ice quality.
When do you notice low ice production? (one day a
week, every day, on weekends, etc.)
Ice Production Check
1. Run the ice machine a minimum of 10 minutes to
allow the system to stabilize.
Can you describe exactly what the ice machine
seems to be doing?
2. Catch the ice in a non-perforated container for
7 minutes and 12 seconds or for more accuracy
14 minutes and 24 seconds.
•
•
Has anyone been working on the ice machine?
During “store shutdown,” is the circuit breaker, water
supply or air temperature altered?
3. Weigh the container and ice, then deduct the weight
of the container.
•
Is there any reason why incoming water pressure
might rise or drop substantially?
4. Convert ounces to pounds.
Example: 3 lbs. 12 oz. converts to 3.75 lbs.
(12 oz. ÷ 16 oz. =.75 lb.)
5. Determine the 24-hour ice production capacity.
7 minutes 12 seconds
Multiply the total ice weight by 200.
14 minutes 24 seconds
Multiply the total ice weight by 100.
Example:
Collected ice for 7 minutes 12 seconds
Total weight (minus container) = 3.75 lbs.
3.75 lbs. x 200 = 750 lbs. of ice every 24 hours
6. Compare the capacity to the 24-hour ice production
chart for the model being tested.
Ice production checks that are within 10% of the
charted capacity are considered normal due to
variances in air and water temperatures. Actual
temperatures will seldom match the chart exactly.
Part No. 80-1214-3
7-5
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Refrigeration System
Section 7
INSTALLATION/VISUAL INSPECTION CHECKLIST
Possible Problem List
Corrective Action List
Filter and/or condenser is dirty.
Clean the filter and condenser.
Install a new water filter.
Water filtration is plugged (if used).
Water drains are not run separately and/or are not vented.
Run and vent drains according to the installation manual.
WATER SYSTEM CHECKLIST
A water-related problem often causes the same symptoms as a refrigeration system component malfunction.
Example: A water float valve over filling during the freeze cycle, a system low on charge, and a starving TXV have
similar symptoms.
Water system problems must be identified and eliminated prior to replacing refrigeration components.
Possible Problem List
Corrective Action List
Water area (evaporator) is dirty.
Clean as needed.
Water inlet pressure not between 20 and 80 psig.
Install a water regulator valve or increase the water pressure.
Incoming water temperature is not between 45°F (1.7°C) and
90°F (32.2°C).
If too hot, check the hot water line check valves in other store
equipment.
Water filtration is plugged (if used).
Vent tube is not installed on water outlet drain.
Hoses, fittings, etc., are leaking water.
Water float valve is stuck open or closed.
Dump valve is leaking.
Install a new water filter.
See installation instructions.
Repair/replace as needed.
Clean/replace as needed.
Clean dump valve.
Ice machine will shut off on Low Water SafeGuard.
Quick disconnect fitting is disconnected from the float valve.
Float valve outlet contacts float.
Attach fitting to float valve.
Adjust float valve outlet (see “Water Level Check”).
SAFEGUARDS
In addition to standard safety controls, your Manitowoc ice machine features built-in SafeGuards. The ice machine will
stop when conditions arise that would cause major component failure. Refer to Section 5 to determine if a SafeGuard
has stopped the ice machine.
7-6
Part No. 80-1214-3
Revised 8/2003
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Section 7
Refrigeration System
ANALYZING DISCHARGE PRESSURE
DURING FREEZE OR HARVEST CYCLE
Procedure
3. Measure the actual discharge pressure.
1. Determine the ice machine operating conditions:
4. Compare the actual discharge pressure (step 3) with
the published discharge pressure (step 2).
Air temp. entering condenser
Air temp. around ice machine
Water temp. entering water reservoir ______
______
______
The discharge pressure is normal when the actual
pressure falls within the published pressure range for the
ice machine’s operating conditions.
2. Refer to Cycle Times/24 Hour Ice Production/
Refrigeration Pressure Chart for ice machine being
checked.
Use the operating conditions determined in step 1 to
find the published normal discharge pressures.
Compare to actual discharge pressure readings.
Discharge Pressure High Checklist
Possible Cause
Check/Correct
Improper installation
See “Installation/Visual Inspection Checklist”
High inlet air temperature
Restricted condenser air flow
Condenser discharge air recirculation
Dirty condenser fins
Defective fan motor
Defective fan cycle control (QC700/QF800 only)
Overcharged
Non-condensables in system
Improper refrigerant charge
Other
Wrong type of refrigerant
Non-Manitowoc components in system
High side refrigerant lines/component restricted (before mid-condenser)
Defective head pressure control valve (RFC2085/RFC2385 only)
Discharge Pressure Low Checklist
Possible Cause
Improper installation
Check/Correct
See “Installation/Visual Inspection Checklist”
Undercharged
Improper refrigerant charge
Wrong type of refrigerant
Other
Non-Manitowoc components in system
Defective head pressure control valve (RFC2085/RFC2385 only)
Defective fan cycle control (QC700/QF800 only)
Suction pressure is too low and affecting discharge pressure. Refer to
suction pressure low checklist.
No water or insufficient pressure
Starving expansion valve
Defective compressor
Moisture in refrigeration system
NOTE: Do not limit your diagnosis to only the items listed in the checklists.
Part No. 80-1214-3
7-7
Revised 8/2003
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Refrigeration System
Section 7
ANALYZING SUCTION PRESSURE
NOTE: Analyze discharge pressure before analyzing suction pressure. High or low discharge pressure may be
causing high or low suction pressure.
Suction Pressure High Checklist
Possible Cause
Improper installation
Check/Correct
See “Installation/Visual Inspection Checklist”
Discharge pressure
Discharge pressure is too high, and is affecting suction pressure
(See “Freeze Cycle Discharge Pressure High Checklist”
Improper refrigerant charge
Overcharged
Wrong type of refrigerant
Non condensables in system
Non-Manitowoc components in system
TXV flooding (check bulb mounting)
Defective compressor
Other
Suction Pressure Low Checklist
Possible Cause
Improper installation
Check/Correct
See “Installation/Visual Inspection Checklist”
Discharge pressure
Discharge pressure is too low, and is affecting suction pressure (See “Freeze Cycle
Discharge Pressure Low Checklist”)
Improper refrigerant charge
Other
Undercharged
Wrong type of refrigerant
Non-Manitowoc components in system
Restricted/plugged liquid line drier
Restricted/plugged tubing in suction side of refrigeration system
Expansion valve starving
No water or insufficient pressure
Defective compressor
Moisture in refrigeration system
Dirty Evaporator
Defective Fan Cycle Control
RFC2085/RFC2385 Only - Defective Head Pressure Control
NOTE: Do not limit your diagnosis to only the items listed in the checklists.
7-8
Part No. 80-1214-3
Revised 8/2003
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Section 7
Refrigeration System
EQUALIZATION VALVE (QF2300)
General
WATER REGULATING VALVE
(WATER-COOLED MODELS ONLY)
General
The equalization valve is an electrically operated valve
that closes when energized, and opens when de-
energized.
The water regulating valve maintains the freeze cycle
discharge pressure.
Check Procedure
Normal Operation
1. Determine if the head pressure is high or low (refer
to “Operational Pressure Charts”).
The valve is energized (closed) during the freeze cycle
and de-energized (open) during the off cycle. The valve
equalizes low and high side pressure during the off
cycle.
2. Verify the condenser water meets specifications
(refer to Section 2 for specifications).
Analysis
3. Adjust valve to increase or decrease discharge
pressure.
The valve can fail in two positions:
4. If the valve will not maintain the correct discharge
pressure clean or replace as needed.
•
•
Valve will not open in the off cycle.
Valve remains open during the freeze cycle.
VALVE WILL NOT OPEN IN THE OFF CYCLE
Discharge and suction pressure will not equalize.
VALVE REMAINS OPEN IN THE FREEZE CYCLE:
Symptoms of a equalization valve remaining partially
open during the freeze cycle can be similar to symptoms
of an expansion valve or compressor problem.
Symptoms are dependent on the amount of leakage in
the freeze cycle.
A small amount of leakage will result in poor quality ice.
As the size of the leak increases ice quantity will
decrease until ice production stops completely.
A small amount of leakage will cause an audible
indication as the vapor passes through the valve. As the
size of the leak increases the audible indication
becomes more apparent.
Refer to the Parts Manual for proper valve application.
When replacement is necessary, use only “original”
Manitowoc replacement parts.
Part No. 80-1214-3
7-9
Revised 8/2003
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Refrigeration System
Section 7
HEADMASTER CONTROL VALVE
Function
Air-Cooled Condensing Units
FREEZE CYCLE
The headmaster control valve maintains the correct
discharge pressure and liquid line temperature.
1. Determine the air temperature entering the
condenser.
Manitowoc Ice Machine systems require headmaster
control valves with special settings. Replace defective
headmaster control valves only with “original” Manitowoc
replacement parts.
2. Determine if the head pressure is high or low in
relationship to the outside temperature. (Refer to the
proper “Operational Pressure Chart”) If the air
temperature is below 70°F (21.1°C), the head
pressure control will modulate to maintain the
correct liquid line temperature and head pressure.
FREEZE CYCLE OPERATION
Air-Cooled Ice Machines
3. Determine the temperature of the liquid line entering
the receiver by feeling it. This line is normally warm;
“body temperature.”
During low ambient conditions, it is normal for the head
pressure control valve to hunt (head pressure may
fluctuate up and down) and generally settles out within
the first 6 minutes of the freeze cycle.
4. Using the information gathered, refer to the chart
below.
At ambient temperatures of approximately 70°F (21.1°C)
or above, refrigerant flows through the condenser to the
receiver inlet. At temperatures below this (or at higher
temperatures if it is raining), the head pressure controls
nitrogen dome charge starts to modulate (closes the
condenser port and opens the bypass port from the
compressor discharge line).
NOTE: A headmaster that will not bypass, will function
properly with condenser air temperatures of
approximately 70°F (21.1°C) or above. When the
temperature drops below 70°F (21.1°C), the headmaster
fails to bypass and the ice machine malfunctions.
Rinsing the condenser with cool water during the freeze
cycle will simulate lower ambient conditions.
In this modulating mode, the valve maintains minimum
head pressure by building up liquid in the condenser and
bypassing discharge gas directly to the liquid line.
Freeze Cycle Headmaster Control Valve Failure List
Probable
Cause
Non-approved Install a Manitowoc
Corrective
Measure
Symptom
Valve not
maintaining
pressures
valve
Headmaster control
valve with proper
setting
Discharge pressure
extremely high;
Valve stuck in Replace valve
bypass
Liquid line entering
receiver feels hot
Discharge pressure
low; Liquid line
Valve not
bypassing
Replace valve
entering receiver
feels extremely cold
Discharge pressure
low; Liquid line
entering receiver
feels hot
Ice machine
low on charge refrigerant leak
Locate and repair
7-10
Part No. 80-1214-3
Revised 8/2003
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Section 7
Refrigeration System
Cycle Time/24 Hour Ice Production/Refrigerant Pressure Charts
These charts are used as guidelines to verify correct ice
machine operation. Accurate collection of data is
essential to obtain the correct diagnosis.
QF400 SELF-CONTAINED AIR COOLED
NOTE: These characteristics may vary depending on
operating conditions.
•
Refer to “Refrigeration System Diagnostics” for the
data that must be collected. This list includes: before
beginning service, ice production check, installation/
visual inspection, water system checklist, ice
formation pattern, safety limits, safeguards and
suction pressure analysis.
24 Hour Ice Production
Air Temp.
Entering
Condenser
°F/°C
Water Temperature °F/°C
50/10.0
70/21.1
90/32.2
•
Ice production checks that are within 10% of the
chart are considered normal. This is due to variances
in water and air temperature. Actual temperatures
will seldom match the chart exactly.
70/ 21.1
80/26.7
90/32.2
100/37.8
110/43.3
395
375
335
295
255
360
320
300
250
230
335
300
270
240
225
•
•
Zero out manifold gauge set before obtaining
pressure readings to avoid misdiagnosis.
Discharge and suction pressure are highest at the
beginning of the cycle. Suction pressure will drop
throughout the cycle. Verify the pressures are within
the range indicated.
Operating Pressures
Freeze Cycle
Air Temp. Entering
Condenser °F/°C
Discharge
Suction
Pressure PSIG
•
All pressure readings must be obtained at the ice
machine head section. Lineset length will affect
pressures at the condensing unit.
Pressure PSIG
50/10.0
70/21.1
80/26.7
90/32.2
100/37.8
110/43.3
160-180
210-235
250-295
285-315
320-360
370-405
27-29
32-35
34-39
37-41
40-46
44-49
Part No. 80-1214-3
7-11
Revised 8/2003
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Refrigeration System
Section 7
QC700 SELF-CONTAINED AIR COOLED
QC700 SELF-CONTAINED WATER COOLED
NOTE: These characteristics may vary depending on
operating conditions.
NOTE: These characteristics may vary depending on
operating conditions.
24 Hour Ice Production
24 Hour Ice Production
Air Temp.
Entering
Condenser
°F/°C
Water Temperature °F/°C
Air Temp.
Entering
Condenser
°F/°C
Water Temperature °F/°C
50/10.0
70/21.1
90/32.2
50/10.0
70/21.1
90/32.2
70/ 21.1
80/26.7
90/32.2
100/37.8
110/43.3
710
710
710
710
710
710
710
710
710
670
710
710
700
670
630
70/21.1
80/26.7
90/32.2
100/37.8
110/43.3
710
710
700
690
670
695
695
685
675
660
655
655
630
615
600
Operating Pressures
Operating Pressures
Freeze Cycle
Freeze Cycle
Air Temp. Entering
Condenser °F/°C
Air Temp. Entering
Condenser °F/°C
Discharge
Suction
Discharge
Suction
Pressure PSIG
Pressure PSIG
Pressure PSIG
Pressure PSIG
70/21.1
80/26.7
90/32.2
100/37.8
110/43.3
200-235
250-320
270-340
320-350
360-400
18-22
20-26
23-29
26-34
29-41
70/21.1
80/26.7
90/32.2
100/37.8
110/43.3
225-235
225-235
225-240
230-245
230-250
18-22
20-26
23-29
26-34
29-41
7-12
Part No. 80-1214-3
Revised 8/2003
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Section 7
Refrigeration System
QF800 SELF-CONTAINED AIR COOLED
QF800 SELF-CONTAINED WATER COOLED
NOTE: These characteristics may vary depending on
operating conditions.
NOTE: These characteristics may vary depending on
operating conditions.
24 Hour Ice Production
24 Hour Ice Production
Air Temp.
Entering
Condenser
°F/°C
Water Temperature °F/°C
Air Temp.
Entering
Condenser
°F/°C
Water Temperature °F/°C
50/10.0
70/21.1
90/32.2
50/10.0
70/21.1
90/32.2
70/21.1
80/26.7
90/32.2
100/37.8
110/43.3
760
760
760
760
730
750
750
740
700
670
740
710
680
660
610
70/21.1
80/26.7
90/32.2
100/37.8
110/43.3
780
780
770
760
740
760
760
750
740
730
725
725
700
670
660
Operating Pressures
Operating Pressures
Freeze Cycle
Freeze Cycle
Air Temp. Entering
Condenser °F/°C
Air Temp. Entering
Condenser °F/°C
Discharge
Suction
Discharge
Suction
Pressure PSIG
Pressure PSIG
Pressure PSIG
Pressure PSIG
70/21.1
80/26.7
90/32.2
100/37.8
110/43.3
220-235
250-320
270-340
320-350
360-400
18-22
20-26
23-29
26-34
29-41
70/21.1
80/26.7
90/32.2
100/37.8
110/43.3
225-235
225-235
225-240
230-245
230-250
18-22
20-26
23-29
26-34
29-41
Part No. 80-1214-3
7-13
Revised 8/2003
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Refrigeration System
Section 7
QF2200/RFC2085 REMOTE AIR COOLED
QF2300/RFC2385 REMOTE AIR COOLED
NOTE: These characteristics may vary depending on 24
Hour Ice Production
NOTE: These characteristics may vary depending on 24
Hour Ice Production
24 Hour Ice Production
24 Hour Ice Production
Air Temp.
Entering
Condenser
°F/°C
Water Temperature °F/°C
Air Temp.
Entering
Condenser
°F/°C
Water Temperature °F/°C
50/10.0
70/21.1
90/32.2
50/10.0
70/21.1
90/32.2
70/21.1
80/26.7
90/32.2
100/37.8
110/43.3
2150
2050
1870
1650
1400
1980
1870
1750
1530
1300
1840
1750
1635
1410
1250
70/21.1
80/26.7
90/32.2
100/37.8
110/43.3
2150
2050
1870
1650
1400
1980
1870
1750
1530
1300
1840
1750
1635
1410
1250
Operating Pressures
Operating Pressures
Freeze Cycle
Freeze Cycle
Air Temp. Entering
Condenser °F/°C
Air Temp. Entering
Condenser °F/°C
Discharge
Suction
Discharge
Suction
Pressure PSIG
Pressure PSIG
Pressure PSIG
Pressure PSIG
-20 to 50/
-29 to10.0
220-245
175-185*
-20 to 50/
-29 to10.0
14-18
17-21
175-185
14-18
220-250
210-225*
70/21.1
80/26.7
90/32.2
100/37.8
110/43.3
210-220
225-265
250-275
275-305
300-340
19-21
20-22
19-23
21-26
22-28
70/21.1
80/26.7
90/32.2
245-270
250-275
315-330
355-375
18-22
19-23
23-26
25-28
100/37.8
110/43.3
*Headmaster part number 82-5116-3 Only
7-14
Part No. 80-1214-3
Revised 8/2003
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Section 7
Refrigeration System
Refrigerant Recovery/Evacuation and Recharging
REFRIGERANT RECOVERY/EVACUATION
Normal Self-Contained Model Procedures
SELF-CONTAINED RECOVERY/EVACUATION
1. Place the toggle switch in the OFF position and
disconnect all power.
Do not purge refrigerant to the atmosphere. Capture
refrigerant using recovery equipment. Follow the
manufacturer’s recommendations.
2. Install manifold gauges, charging cylinder/scale, and
recovery unit or two-stage vacuum pump.
MANIFOLD SET
Important
Manitowoc Ice, Inc. assumes no responsibility for
the use of contaminated refrigerant. Damage
resulting from the use of contaminated refrigerant is
the sole responsibility of the servicing company.
OPEN
OPEN
BACKSEAT
BACKSEAT
HIGH SIDE
ACCESS
VALVE
LOW SIDE
ACCESS
VALVE
Important
Replace the liquid line drier before evacuating and
recharging. Use only a Manitowoc (O.E.M.) liquid
line filter drier to prevent voiding the warranty.
CONNECTIONS
Quick disconnect fittings are recommended to prevent
accidental release of refrigerant.
VACUUM
PUMP/
RECOVERY
UNIT
1. Suction side of the compressor through the suction
service valve.
SCALE
OPEN
2. Discharge side of the compressor through the
discharge service valve.
SV3055
Recovery/Evacuation Connections
3. Perform recovery or evacuation:
A. Recovery: Operate the recovery unit as directed
by the manufacturer’s instructions.
B. Evacuation prior to recharging: Pull the system
down to 500 microns. Then, allow the pump to
run for an additional half hour. Turn off the pump
and perform a standing vacuum leak check.
NOTE: Check for leaks using a halide or electronic leak
detector after charging the ice machine.
4. Refer to Charging Procedures.
Remote Air-Cooled Models
Do not purge refrigerant to the atmosphere. Capture
refrigerant using recovery equipment. Follow the
manufacturer’s recommendations.
Important
Manitowoc Ice Inc. assumes no responsibility for the
use of contaminated refrigerant. Damage resulting
from the use of contaminated refrigerant is the sole
responsibility of the servicing company.
Part No. 80-1214-3
7-15
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Refrigeration System
Section 7
Recovery/Evacuation (QF2200/QF2300)
Important
1. Place the toggle switch in the OFF position and
disconnect all power to the ice machine and
condensing unit.
Replace the liquid line drier before evacuating and
recharging. Use only a Manitowoc (OEM) liquid line
filter drier to prevent voiding the warranty.
2. Install the manifold gauges, charging scale and
recovery unit or two-stage vacuum pump.
Connections
Manifold gauge sets must utilize low loss fittings to
comply with U.S. Government rules and regulations.
Make these connections:
3. Open the receiver service valve halfway.
4. Open high and low side on the manifold gauge set.
5. Perform recovery or evacuation:
•
•
•
Suction side of the compressor through the suction
shut-off valve.
A. Recovery: Operate the recovery unit as directed
by the manufacturer’s instructions.
Discharge side of the compressor through the liquid
line shut-off valve.
B. Evacuation prior to recharging: Evacuate to 500
microns. Then allow the pump to run for an
additional hour. Turn off the pump and perform a
standing vacuum leak check.
Receiver service valve, which evacuates the area
between the check valve in the liquid line and the
liquid line solenoid valve.
6. Refer to Charging Procedures.
!
Warning
Recovery/Evacuation requires connections at three
points for complete system recovery/evacuation. A
check valve is located in the ice machine head
section between the liquid line shut-off valve and the
receiver. The check valve prevents refrigerant
migration from the receiver to the condensing unit in
the off cycle. Connections must be made at three
points (receiver service valve, suction line and liquid
line) to allow recovery and evacuation of the entire
system.
CONNECTIONS MUST BE
MADE AT 3 POINTS FOR
COMPLETE REFRIGERANT
SV3016
RECOVERY OR EVACUATION
!
Warning
The receiver service valve (located in the ice
machine head section) must be accessed during
refrigerant recovery to allow complete removal of
the refrigerant charge.
7-16
Part No. 80-1214-3
Revised 8/2003
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Section 7
Refrigeration System
Self-Contained Model Charging Procedures
Important
The charge is critical on all Manitowoc ice
machines. Use a scale or a charging cylinder to
ensure the proper charge is installed.
2. Close the vacuum pump valve, the low side service
valve, and the low side manifold gauge valve.
3. Open the high side manifold gauge valve, and
backseat the high side access valve.
4. Open the charging cylinder and add the proper
refrigerant charge (shown on nameplate) through
the discharge access valve.
1. Be sure the toggle switch is in the OFF position.
5. Let the system “settle” for 2 to 3 minutes.
6. Place the toggle switch in the ICE position.
MANIFOLD SET
7. Close the high side on the manifold gauge set. Add
any remaining vapor charge through the suction
access valve (if necessary).
CLOSED
OPEN
NOTE: Manifold gauges must be removed properly to
ensure that no refrigerant contamination or loss occurs.
FRONTSEAT
BACKSEAT
HIGH SIDE
ACCESS
VALVE
LOW SIDE
ACCESS
VALVE
8. Make sure that all of the vapor in the charging hoses
is drawn into the ice machine before disconnecting
the charging hoses.
A. Run the ice machine in freeze cycle.
B. Remove the quick disconnect fitting from the
high side access valve at the ice machine.
C. Open the low side service valve at the ice
machine.
VACUUM
PUMP/
RECOVERY
UNIT
D. Open the high and low side valves on the
manifold gauge set. Any refrigerant in the lines
will be pulled into the low side of the system.
SCALE
CLOSED
E. Allow the pressures to equalize while the ice
machine is in the freeze cycle.
SV3055
Charging Connections
F. Remove the quick disconnect fitting from the low
side access valve at the ice machine and install
both access valve caps.
Part No. 80-1214-3
7-17
Revised 8/2003
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Refrigeration System
Section 7
Remote Charging Procedures (QF2200/QF2300)
1. Be sure the toggle switch is in the OFF position.
2. Close the vacuum pump valve and the low side
manifold gauge valve.
3. Open the refrigerant cylinder and add the proper
refrigerant charge (shown on nameplate) into the
system high side (receiver service valve and
discharge line quick-connect fitting).
4. If the high side does not take the entire charge,
close the high side on the manifold gauge set. Start
the ice machine and add the remaining charge
through the suction filter low side service port.
Compressor damage can result.
5. Ensure all vapor in charging hoses is drawn into the
low side of the system, then disconnect the manifold
gauges.
6. Run the ice machine in freeze cycle.
7. Close the receiver service valve in the ice machine
head section.
8. Disconnect the manifold gauge set from the liquid
line shut-off valve.
9. Open the high and low side valves on the manifold
gauge set. Any refrigerant in the lines will be pulled
into the low side of the system.
10. Allow the pressures to equalize while the ice
machine is in the freeze cycle.
11. Disconnect the manifold gauge set from the suction
line shut-off valve.
12. Remove the hoses from the ice machine and install
the caps.
NOTE: Check for refrigerant leaks after all valve caps
have been installed.
7-18
Part No. 80-1214-3
Revised 8/2003
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Section 7
Refrigeration System
SYSTEM CONTAMINATION CLEAN-UP
General
If either condition is found, or if contamination is
suspected, use a Total Test Kit from Totaline or a similar
diagnostic tool. These devices sample refrigerant,
eliminating the need to take an oil sample. Follow the
manufacturer’s directions.
This section describes the basic requirements for
restoring contaminated systems to reliable service.
If a refrigerant test kit indicates harmful levels of
contamination, or if a test kit is not available, inspect the
compressor oil.
Important
Manitowoc Ice, Inc. assumes no responsibility for
the use of contaminated refrigerant. Damage
resulting from the use of contaminated refrigerant is
the sole responsibility of the servicing company.
1. Remove the refrigerant charge from the ice
machine.
2. Remove the compressor from the system.
3. Check the odor and appearance of the oil.
Determining Severity Of Contamination
System contamination is generally caused by either
moisture or residue from compressor burnout entering
the refrigeration system.
4. Inspect open suction and discharge lines at the
compressor for burnout deposits.
5. If no signs of contamination are present, perform an
acid oil test.
Inspection of the refrigerant usually provides the first
indication of system contamination. Obvious moisture or
an acrid odor in the refrigerant indicates contamination.
Check the chart below to determine the type of cleanup
required.
Contamination/Cleanup Chart
Symptoms/Findings
Required Cleanup Procedure
No symptoms or suspicion of contamination
Moisture/Air Contamination symptoms
Normal evacuation/recharging procedure
Refrigeration system open to atmosphere for longer than 15
minutes
Mild contamination cleanup procedure
Refrigeration test kit and/or acid oil test shows contamination
Leak in water-cooled condenser
No burnout deposits in open compressor lines
Mild Compressor Burnout symptoms
Oil appears clean but smells acrid
Mild contamination cleanup procedure
Severe contamination cleanup procedure
Refrigeration test kit or acid oil test shows harmful acid content
No burnout deposits in open compressor lines
Severe Compressor Burnout symptoms
Oil is discolored, acidic, and smells acrid
Burnout deposits found in the compressor and lines, and in
other components
Part No. 80-1214-3
7-19
Revised 8/2003
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Refrigeration System
Section 7
Mild System Contamination Cleanup Procedure
1. Replace any failed components.
Severe System Contamination Cleanup Procedure
1. Remove the refrigerant charge.
2. If the compressor is good, change the oil.
3. Replace the liquid line drier.
2. Remove the compressor.
3. If burnout deposits are found inside the suction or
discharge lines at the compressor.
NOTE: If the contamination is from moisture, use heat
lamps during evacuation. Position them at the
compressor, condenser and evaporator prior to
evacuation. Do not position heat lamps too close to
plastic components, or they may melt or warp.
4. Wipe away any burnout deposits from suction and
discharge lines at compressor.
5. Sweep through the open system with dry nitrogen.
Important
Important
Refrigerant sweeps are not recommended, as they
release CFC’s into the atmosphere.
Dry nitrogen is recommended for this procedure.
This will prevent CFC release.
6. Install a new compressor and new start
components.
4. Follow the normal evacuation procedure, except
replace the evacuation step with the following:
7. Install a suction line filter-drier in front of
A. Pull vacuum to 1000 microns. Break the vacuum
with dry nitrogen and sweep the system.
Pressurize to a minimum of 5 psi.
compressor. (Remote Models replace suction filter
with an acid removal suction filter/drier). Install
access valves to allow pressure drop readings to be
taken across the suction filter, when needed.
B. Pull vacuum to 500 microns. Break the vacuum
with dry nitrogen and sweep the system.
Pressurize to a minimum of 5 psi.
8. Install a new liquid line drier.
Continued on next page …
C. Change the vacuum pump oil.
D. Pull vacuum to 500 microns. Run the vacuum
pump for 1/2 hour on self-contained models, 1
hour on remotes.
NOTE: You may perform a pressure test as a preliminary
leak check. You should use an electronic leak detector
after system charging to be sure there is no leak.
5. Charge the system with the proper refrigerant to the
nameplate charge.
6. Operate the ice machine.
7-20
Part No. 80-1214-3
Revised 8/2003
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Section 7
Refrigeration System
9. Follow the normal evacuation procedure, except
replace the evacuation step with the following:
REPLACING PRESSURE CONTROLS WITHOUT
REMOVING REFRIGERANT CHARGE
This procedure reduces repair time and cost. Use it
when any of the following components require
replacement, and the refrigeration system is operational
and leak-free.
Important
Dry nitrogen is recommended for this procedure.
This will prevent CFC release.
•
•
•
High pressure cut-out control
High side access valve
Low side access valve
A. Pull vacuum to 1000 microns. Break the vacuum
with dry nitrogen and sweep the system.
Pressurize to a minimum of 5 psi.
B. Change the vacuum pump oil.
Important
C. Pull vacuum to 500 microns. Break the vacuum
with dry nitrogen and sweep the system.
Pressurize to a minimum of 5 psi.
This is a required in-warranty repair procedure.
1. Disconnect power to the ice machine.
D. Change the vacuum pump oil.
2. Follow all manufacturer’s instructions supplied with
the pinch-off tool. Position the pinch-off tool around
the tubing as far from the pressure control as
feasible. (See the figure on next page.) Clamp down
on the tubing until the pinch-off is complete.
E. Pull vacuum to 500 microns. Run the vacuum
pump for 1/2 hour.
10. Charge the system with the proper refrigerant to the
nameplate charge.
11. Operate the ice machine for one hour. Then, check
the pressure drop across the suction line filter/drier.
!
Warning
Do not unsolder a defective component. Cut it out of
the system. Do not remove the pinch-off tool until
the new component is securely in place.
A. If the pressure drop is less than 2 psi, the filter-
drier should be adequate for complete cleanup.
B. If the pressure drop exceeds 2 psi, change the
suction line filter-drier and the liquid line drier.
Repeat until the pressure drop is acceptable.
3. Cut the tubing of the defective component with a
small tubing cutter.
12. Operate the ice machine for 48-72 hours. Then,
remove the suction line filter/drier and change the
liquid line drier. QF2300- Replace with a new suction
filter.
4. Solder the replacement component in place. Allow
the solder joint to cool.
5. Remove the pinch-off tool.
6. Re-round the tubing. Position the flattened tubing in
the proper hole in the pinch off tool. Tighten the
wingnuts until the block is tight and the tubing is
rounded. (See the drawing on next page.)
13. Follow normal evacuation procedures.
NOTE: The pressure controls will operate normally once
the tubing is re-rounded. Tubing may not re-round 100%.
Part No. 80-1214-3
7-21
Revised 8/2003
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Refrigeration System
Section 7
SV1406
Using Pinch-Off Tool
7-22
Part No. 80-1214-3
Revised 8/2003
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Section 7
Refrigeration System
FILTER-DRIERS
SUCTION CLEAN-UP FILTER/DRIER
Liquid Line Filter Drier
QF400/QC700/QF800
The filter-driers used on Manitowoc ice machines are
manufactured to Manitowoc specifications.
Contaminated systems must have a suction line filter/
drier installed to remove contamination (See System
Contamination Clean-Up Procedures). An access valve
must be installed on the inlet side of the suction filter to
allow pressure drop readings to be obtained.
The difference between Manitowoc driers and off-the-
shelf driers is in filtration. Manitowoc driers have dirt-
retaining filtration, with fiberglass filters on both the inlet
and outlet ends.
These filter-driers have a very high moisture removal
capability and a good acid removal capability.
End
Connection
Size
Drier
Size
Part
Number
Model
The size of the filter-drier is important. The refrigerant
charge is critical. Using an improperly sized filter-drier
will cause the ice machine to be improperly charged with
refrigerant.
QF400
QC700
QF800
UK-165S
5/8”
89-3028-3
Listed below are the recommended O.E.M. field
replacement driers:
Remote Models
Contact your local Manitowoc Distributor for suction filter
capable of cleaning the system. The clean-up filter drier
must have a minimum nominal capacity of 3 hp. After
clean-up is complete (see System Contamination Clean-
Up Procedures), remove clean-up filter drier and replace
with new suction filter.
End
Connection
Size
Drier
Size
Part
Number
Model
QF400
QC700
QF800
UK-032S
UK-083S
1/4"
3/8"
89-3025-3
89-3021-3
QF2200/
QF2300
TOTAL SYSTEM REFRIGERANT CHARGES
Important
This information is for reference only. Refer to the
ice machine serial number tag to verify the system
charge. Serial plate information overrides
information listed on this page.
Important
The liquid line driers are covered as a warranty part.
The liquid line drier must be replaced any time the
system is opened for repairs.
Suction Line Filter
Series
QF400
Charge
13 oz. (369 g)
Remote condensing units have a suction line filter to trap
particles introduced during field installation. The suction
filter does not have acid or moisture removal capabilities.
QC700
Air-Cooled - 20 oz (567 g)
Water-Cooled - 16 oz (454 g)
0’ to 50’ linesets 12.5 lbs (5.7 kg)
50’ to 100’ linesets 14.0 lbs (6.4 kg)
QF800
QF2200/QF2300
End
Connection
Size
Drier
Size
Part
Number
Model
RFC2085/
RFC2385
RFC2085/
RFC2385
ASF-45S6
3/4”
82-5026-3
NOTE: All ice machines on this list are charged using
R-404A refrigerant.
Part No. 80-1214-3
7-23
Revised 8/2003
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Refrigeration System
Section 7
REFRIGERANT DEFINITIONS
Recover
Reclaim
To reprocess refrigerant to new product specifications
(see below) by means which may include distillation. A
chemical analysis of the refrigerant is required after
processing to be sure that product specifications are
met. This term usually implies the use of processes and
procedures available only at a reprocessing or
manufacturing facility.
To remove refrigerant, in any condition, from a system
and store it in an external container, without necessarily
testing or processing it in any way.
Recycle
To clean refrigerant for re-use by oil separation and
single or multiple passes through devices, such as
replaceable core filter-driers, which reduce moisture,
acidity and particulate matter. This term usually applies
to procedures implemented at the field job site or at a
local service shop.
Chemical analysis is the key requirement in this
definition. Regardless of the purity levels reached by a
reprocessing method, refrigerant is not considered
“reclaimed” unless it has been chemically analyzed and
meets ARI Standard 700 (latest edition).
New Product Specifications
This means ARI Standard 700 (latest edition). Chemical
analysis is required to assure that this standard is met.
7-24
Part No. 80-1214-3
Revised 8/2003
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Revised 8/2003
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Attend A Manitowoc Factory Service School
• Improve Your Service Techniques
• Network with Your Peers
• 4 1/2 Days of Intensive Training on Manitowoc Ice Machines
• Extensive “Hands On” Training on a Variety of Equipment
• Breakfast, Lunch and Hotel Room Included with Tuition
• Contact Your Distributor or Manitowoc Ice, Inc. for Details
OR
• Visit Our Website at www.manitowocice.com for School Dates
MANITOWOC ICE, INC.
2110 South 26th Street P.O. Box 1720
Manitowoc, WI 54221-1720
Phone: (920) 682-0161
Service Fax: (920) 683-7585
Web Site - www.manitowocice.com
© 2003 Manitowoc Ice, Inc.
Litho in U.S.A.
Revised 8/2003
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Section 7
Refrigeration System
REFRIGERANT RE-USE POLICY
3. Recovered or Recycled Refrigerant
Manitowoc recognizes and supports the need for proper
handling, re-use, and disposal of, CFC and HCFC
refrigerants. Manitowoc service procedures require
recapturing refrigerants, not venting them to the
atmosphere.
•
Must be recovered or recycled in accordance
with current local, state and federal laws.
•
Must be recovered from and re-used in the same
Manitowoc product. Re-use of recovered or
recycled refrigerant from other products is not
approved.
It is not necessary, in or out of warranty, to reduce or
compromise the quality and reliability of your customers’
products to achieve this.
•
•
Recycling equipment must be certified to ARI
Standard 740 (latest edition) and be maintained
to consistently meet this standard.
Important
Recovered refrigerant must come from a
“contaminant-free” system. To decide whether
the system is contaminant free, consider:
Manitowoc Ice, Inc. assumes no responsibility for
use of contaminated refrigerant. Damage resulting
from the use of contaminated, recovered, or
recycled refrigerant is the sole responsibility of the
servicing company.
– Type(s) of previous failure(s)
– Whether the system was cleaned, evacuated
and recharged properly following failure(s)
Manitowoc approves the use of:
– Whether the system has been contaminated
by this failure
1. New Refrigerant
– Compressor motor burnouts and improper
past service prevent refrigerant re-use.
•
Must be of original nameplate type.
2. Reclaimed Refrigerant
– Refer to “System Contamination Cleanup” to
test for contamination.
•
•
Must be of original nameplate type.
Must meet ARI Standard 700 (latest edition)
specifications.
4. “Substitute” or “Alternative” Refrigerant
•
Manitowoc Flake/Chiplet ice machines use
R404A refrigerant. Substitute refrigerants are not
approved for use in Flake/Chiplet ice machines.
Part No. 80-1214-3
7-25
Revised 8/2003
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Refrigeration System
Section 7
THIS PAGE INTENTIONALLY LEFT BLANK
7-26
Part No. 80-1214-3
Revised 8/2003
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