SCCG30 & SCCP30
Service Manual
Introduction:
This ice machine is the result of Scotsman’s This manual includes the information needed to
decades of experience as an industry leader in the install, start up and maintain the ice machine. Note
design and manufacture of both commercial and
residential ice machines.
any Caution or Warning indicators, as they provide
notice of potential hazards. Keep this manual for
future reference.
Table of Contents
Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 2
Cabinet Layout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 3
Air flow . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 4
Water Quality . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 5
Door Covering . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 6
Door Panel Attachment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 7
Custom Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 8
Door swing change . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 9
Installation: Water & Drain . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 10
Gravity Drain . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 11
Electrical . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 12
Cube Size Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 13
Harvest Time Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 14
Control Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 15
Use . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 16
How to clean the condenser and winterize. . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 17
How to remove scale from the ice making system. . . . . . . . . . . . . . . . . . . . . . . . Page 18
System Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 19
Water System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 20
Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 21
Controller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 22
Performance Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 23
Refrigeration System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 24
Thermistor Values . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 25
Service Diagnosis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 26
Service Diagnosis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 27
Removal and Repair . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 28
Removal and Repair . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 29
Removal and Repair - Cabinet Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 30
Refrigeration Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 32
September 2009
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SCCG30 & SCCP30
Service Manual
Cabinet Layout
FLOOR DRAIN
3 7/8"
ACCESS HOLE
20 3/8"
22"
.75 SHEET METAL DOOR FRONT
.63 MIN. CABINET DOOR
14 7/8"
29 1/4"
33 3/8"
MIN.
34 3/8" MAX.
DRAIN
FLEXIBLE TUBING
3/8 I.D. PUMP MODEL (INCLUDED)
5/8 I.D. GRAVITY MODEL (NOT INCLUDED)
POTABLE WATER INLET
1/4" COMPRESSION FITTING
4"
3 1/4"
2 1/2"
AIR IN
2 3/4"
AIR OUT
1 1/2"
1" LEG ADJUSTMENT
(4) PLACES
3 3/4"
7 3/8"
115 V
POWER CORD
September 2009
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Service Manual
Air flow
The machine takes in room temperature air at the
lower right front and forces warm air out the lower
left front. Restricting the airflow will adversely affect
the ability of the ice machine to make ice.
On/Off Switch
Ice Making
Area
Warm Air Out
Air Intake
Scotsman Ice Systems are designed and
manufactured with the highest regard for safety
and performance. They meet or exceed the
standards of agencies like U.L.
Scotsman assumes no liability or responsibility of
any kind for products manufactured by Scotsman
that have been altered in any way, including the
use of any parts and/or other components not
specifically approved by Scotsman.
Scotsman reserves the right to make design
changes and/or improvements at any time.
Specifications and designs are subject to change
without notice.
September 2009
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SCCG30 & SCCP30
Service Manual
Water Quality
All water, including potable water supplied by
municipalities, contains some impurities or
Filters and Treatment
minerals. Water absorbs impurities from the air as
rain and/or as it flows through the ground. Some of
the impurities are solid particles, these are known
as suspended solids, and a fine particle filter will
remove them. Other impurities are chemically
bonded to the water molecules, and cannot be
filtered out, these are called dissolved solids.
In general, it is always a good idea to filter the
water. A water filter, if it is of the proper type, can
remove taste and odors as well as particles. Some
methods of water treatment for dissolved solids
include reverse osmosis, and polyphosphate
feeders.
RO Water
Ice made by this machine will have a lower mineral
content than the water it was made from. This is
due to the method of making ice. Purer water will
freeze first in the ice making molds. The reason for
this is that anything dissolved in water lowers the
water’s freezing temperature. This concentrates
most of the impurities in the ice machine water
reservoir where they may form hard deposits
known as scale. The machine dilutes the
concentration of minerals by over-filling the
reservoir during the harvest cycle (with the excess
water flowing down the drain). s. Between 2 and 4
pints of water flow into the unit each cycle.
Between 1 and 3.5 pints of that rinses the reservoir
and goes down the drain.
This machine can be supplied with Reverse
Osmosis water. A reverse osmosis system should
include post treatment to satisfy the R.O. water’s
potential aggressiveness. Deionized water is not
recommended.
Because water softeners exchange one mineral for
another, softened water may not improve water
conditions when used with ice machines. Where
water is very hard, softened water could result in
white, mushy cubes that stick together.
If in doubt about the water, contact a local point of
use water specialist for recommendations on water
treatment.
Some impurities will inevitably remain, and will stick
to the parts in the machine, and will cause
malformed ice cubes. Eventually, built up mineral
scale can shorten machine life.
Installation Overview
The ice machine must:
To keep the machine operating properly, these
impurities or minerals will have to be regularly
dissolved by an acid cleaning, using Scotsman Ice
Machine Scale Remover. Directions for this may be
found in the section under cleaning.
• be connected to cold, potable water
• be connected to a drain
• be connected to the proper power supply
front.
• be able circulate air through the vents at the
Note: Do not build in so that the door is recessed.
September 2009
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SCCG30 & SCCP30
Service Manual
Door Covering
Door Panel
Custom Panel
The ice machine is supplied without a conventional A custom panel of wood or other material not
door covering so it can be decorated to the user’s
preference. Scotsman offers several coverings
including white, black and stainless steel. In
addition, a custom built panel can be placed onto
the door.
exceeding 15 lb can be attached to the door.
Attachment is from the ice side of the door. Holes
are provided in the door for this purpose.
See instructions in information packet to create and
attach a custom panel:
Door Panel Attachment
To attach a Scotsman supplied panel:
Note: If door swing is to be changed, it must be
done before panel is attached.
The panel will be held on by 6 sheet metal screws
and 2 machine screws.
1. Remove the gasket and retain for later use.
2. If the door panel is stainless steel, remove any
plastic covering the stainless steel panel.
3. Place the panel onto the outside of the door,
and secure it to the door using two machine
screws, located at the left center and right
center.
4. Fasten the panel to the door using the 6 sheet
metal screws. In the hinge area, use the
outermost screw holes.
5. Place the covers over the hinge areas, and
secure each cover to the door using a sheet
metal screw.
6. Insert hole plug over screw installed in step 5.
7. Return the gasket to its original position.
September 2009
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Custom Panel
A custom panel of wood or other material not
exceeding 15 lb can be attached to the door.
Attachment is from the ice side of the door. Holes
are provided in the door for this purpose.
10. Mount panel to door using wood screws or
supplied panel mounting screws.
Note: When installed Ice machine must be adjusted
for height to position top of door to desired
clearance.
To create and attach a custom panel:
• Panel width: 14 7/8”
• Panel height: Between 29 3/8” and 30 3/8”.
• Panel thickness: 5/8” to ¾”
1. Measure overall height of cabinet
opening where ice machine will be
(floor to bottom of countertop edge).
13 9/16"
6 25/32"
8 1/4"
2. Determine desired kickplate
13/16"
4 1/8"
space (from bottom of door to floor).
This could be equal to the adjacent
cabinet’s kickplate space or another
space the user wants.
13/32"
3. Subtract kickplate space from
cabinet opening.
14 11/16"
4. Subtract 1/8 or more for clearance
space between top of door and
bottom of countertop edge from
cabinet opening. This is the
maximum door length.
Ø
1/8"
TYP. (10)
5. Cut panel to width.
30 3/8"
29 3/8"
6. Cut panel to length (cabinet space
- kickplate space - top clearance =
length).
7. Determine top of panel.
8. Mark hole locations using drawing
on the back of these instructions.
Drawing assumes top of panel will
be flush with top of door. Measure
hole locations from the top of the
panel.
13 31/64"
9. Drill pilot holes for wood screws.
Use drill stop to prevent drilling
through the panel.
13/32"
{Centerline}
14 7/8"
September 2009
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Service Manual
Door swing change
The door can be attached to open with hinges on
the left or right using new brackets shipped loose in
the ice bin. Retain all screws for re-use.
8. Remove the upper hinge and move it to the
door's opposite side, bottom location. Secure
using the original screws.
To change:
9. Remove the original lower hinge and move it to
the door's opposite side, upper location.
Secure using the original screws.
1. Remove innermost
screw holding each
hinge to cabinet, loosen
the other.
10. Install a screw removed in step 2 in outermost
hole of upper and lower cross braces.
2. Slide hinges to the side
and remove door from
cabinet. Remove
11. Attach the door to the cabinet using the original
screws.
screws loosened in step
1 from both hinge brackets.
12. Return kickplate and front service panel to their
original positions and attach to the cabinet
using the original screws.
3. Remove two screws securing top panel to
back, pull top panel back and remove from
cabinet.
Installation Notes
Built In Situations: If a finished floor is to be
installed in the area after the ice machine has been
built in, shims the expected thickness of the floor
should be installed under the unit to keep the
machine level with the planned floor level.
Door Hinge
Bracket
4. Remove two screws at
the top and lift the door
hinge bracket out of the
cabinet. Replace with the
one supplied loose with
the machine. Fasten it to
the cabinet using the
original screws.
Installations on a slab: Use a pump model and
pump the water to the point of drainage. Pump
models will pump 1 story (10 feet) high.
5. Return the top panel to the cabinet and fasten
it with the original screws.
Installations over a crawl space or basement:
Either gravity drain or pump model units may be
used, if there is not enough room behind the
machine for a drain/waste receptacle, the drain will
have to be below the floor.
6. Remove kickplate and front service panel.
7. Remove two front screws and two bottom
screws holding the bottom cross brace to the
cabinet. Replace the brace with the one
supplied loose with the machine. Secure it
using the original screws.
Note: When installed in a corner, the door swing
may be limited due to handle contact with the wall
or cabinet face.
Screw Below
September 2009
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SCCG30 & SCCP30
Service Manual
Installation: Water & Drain
The recommended water supply tubing is ¼ inch
OD copper. Stainless steel flex or reinforced PVC
Drains
tube may also be used. Install an easily accessible There are two types of ice machine models, one
shut-off valve between the supply and the unit. This that drains by gravity and one that has an internal
shut-off valve should not be installed behind the
unit.
drain pump.
Drain Pump Model drain installation
Note: Do not use self-piercing type valves.
1. Remove the front service panel.
1. Locate the coil of 3/8” ID plastic drain tubing
secured to the back of the unit.
2. Route the plastic drain tube from the back of the
unit to the drain connection point.
IMPORTANT NOTE: Often an air gap is required by
local codes between the ice maker drain tube and
the drain receptacle.
Screw
Securing
Front Service
Panel
2. Route the tubing through the right hole in the
back to the inlet water solenoid valve inlet.
3. Install a compression fitting on the tubing and
connect to the inlet of the solenoid.
Water Inlet
Tube (field
supplied)
Drain Tube,
Route to
building drain
Back View, Drain Pump Model
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Gravity Drain
Caution: Restrictions in the drain system to the
machine will cause water to back up into the ice
storage bin and melt the ice. Gravity drain tubing
must be vented, have no kinks and slope to the
building drain. Air gaps are typically required by
local code.
4. Connect a straight 5/8” barbed connector to the
drain hose, securing with the clamp removed in
step 4.
5. Cut an 8” piece of 5/8” ID X 7/8” OD tygon (clear
plastic) tubing. Slide one end of the tube onto the
outlet of the barbed connector and secure with a
clamp. Leave the other end of the tube lying on the
floor of the base pan until the unit is positioned
over the floor drain.
1. Place the ice machine in front of the installation
opening. Adjust leveling legs to the approximate
height.
2. Remove the front service access panel and the
upper back panel.
6. Route the drain tube. Either a) Insert the drain
tube through the base pan into the floor drain or b)
Route the drain tube through the left hole in the
lower back panel and connect to barbed elbow and
secure with a clamp.
Note: If you are connecting a gravity drain model
and the drain opening has been located in the floor
under the base pan according to the pre install
specifications, follow steps 3 through 5 to drain the
unit through the base. If not, proceed to step 6b.
7. Reinstall the upper back panel.
8. Reinstall the service access panel. Level the
unit.
3. Remove the clamp and barbed elbow and take
off the plastic cover in the base pan below the drain
hose.
Barbed Elbow
Drain Hose
Water Inlet
Tube (field
supplied)
Drain Hose,
Route to
building drain
Back View, Gravity Drain Model
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Electrical & Start Up
The ice machine is supplied with a power cord. Do
not remove the grounding pin from the cord’s plug.
Do not use extension cords. Follow all codes.
Connect the machine to its own 115 volt, 15 amp
circuit.
Initial Start Up
1. Turn on the water supply.
2. Switch on the electrical power.
3. Move the On/Off switch to the ON position.
1. If the electrical outlet for the ice maker is
behind the unit, plug in the unit.
2. Position the unit in the installation opening.
3. Turn on the water supply. Make sure that the
ice maker is plugged in and the power is on.
4. Slide unit into installation opening, paying
careful attention to water supply and drain
connections. Do not kink!
5. Pour a couple of quarts of water into the ice
storage bin; on drain pump equipped machines
the drain pump should start and water should
pump out. Check for leaks.
6. Replace the service access panel.
7. Level the unit as needed.
Installation check list:
The compressor will start and water will begin
to flow into the unit. When the reservoir is full,
water will start to drain from the machine. After
a few minutes the water pump and fan motor
will begin to operate and the first ice making
cycle will have begun.
4.
1. Has the unit been connected to the proper
water supply?
No adjustments are needed.
After about a half hour, ice will fall into the ice
storage bin. The machine makes 12 cubes per
batch. It is normal for the first batches of ice to
melt, that continues until the bin has cooled. It will
take 16 to 24 hours of continuous run time to fill the
ice bin. When the bin is full of ice, the ice machine
will shut off. It will automatically restart when the
ice level falls, either from use or normal meltage.
2. Has the water supply be checked for leaks?
3. Has the unit been connected to a drain?
4. Has the drain been tested for flow and leaks?
5. Has the unit been connected to the proper
electrical supply?
6. Has the unit been leveled?
7. Have all packing materials been removed from
the machine?
8H.as the door covering been installed?
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SCCG30 & SCCP30
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Cube Size Adjustment
The size of the ice cubes is determined by how
long the ice machine is in the freezing cycle. That
is controlled by the cube size thermostat.
Side Views of Cubes
The cube size thermostat's sensing portion is
attached to the suction tube, near the outlet of the
evaporator. As the machine makes ice, the
temperature of the suction tubing falls. When it
reaches a preset point, the thermostat's contacts
close and connect power to the electronic timer.
The electronic timer finishes the freeze cycle.
Too Small, Adjust Cycle Longer
Adjustment
There is only one proper ice cube size, see the
diagram to the right. If the cubes are not the correct
size, adjust the cube size thermostat.
Just Right
Rotate the cube size thermostat's adjustment
screw clockwise to increase the size of the cube.
Rotate the cube size thermostat's adjustment
screw counter clockwise to make the ice cube size
smaller.
Too Large, Adjust Cycle Shorter
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Harvest Time Adjustment
The harvest time can be adjusted so that all the ice
is released during the harvest period, with a few
seconds extra for a safety margin. The adjustment
range is between 2 to 5 minutes.
There is an adjustment screw on the surface of the
electronic timer. Rotate the screw CCW to reduce
harvest time, and CW to increase it. It should be
set to match the machine's performance. If the
machine takes 2 and a half minutes to release the
ice, the harvest time should be set to about 3
minutes.
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Use
No special instructions are needed for use. Just
take as much ice as you need, the machine will
replace it. A scoop is provided, and it can be stored
in the machine using the loop of tubing on the right
side as a holder.
The machine can be shut off anytime by moving
the On/Off switch to OFF.. The machine will shut
off immediately.
What shouldn’t be done?
Normal cubes are tapered cylinders. If the cubes
are ragged and mis-shaped, mineral scale must be
removed from the ice making system
Never keep anything in the ice storage bin that is
not ice. Objects like wine or beer bottles are not
only unsanitary, but the labels can slip off and plug
up the drain.
Maintenance
Never allow the machine to operate without regular
cleaning. The machine will last longer if it is kept
clean. Regular cleaning should happen at least
once per year, and preferably twice. Some water
conditions will dictate even more frequent cleaning
of the ice making section, and some carpets or
pets will dictate more frequent cleaning of the
condenser.
There are 5 things to keep clean:
1. The outside cabinet & door.
2. The ice storage bin.
3. The condenser.
4. The ice making system.
5. The ice scoop.
Noise:
The ice machine is designed for quiet operation,
but will make some noise during the ice making
cycle. During a freezing cycle, it is normal to hear
the fan moving air and the water pump circulating
water. Ice hitting the bin or ice in the bin can be
heard during harvest.
How to clean the cabinet.
Wipe off any spills on the surface of the door and
handle as they occur. If anything spilled on the
door or gasket dries onto the surface, wash with
soap and warm water to remove.
If ice making noise is objectionable, an appliance
grade timer can be added to the power supply. Set
the timer to turn the machine off at the time(s) of
day when the noise is most objectionable.
How to clean the ice storage bin.
The ice storage bin should be sanitized
occasionally. It is usually convenient to sanitize the
bin after the ice making system has been cleaned,
and the storage bin is empty.
A sanitizing solution can be made of 1 ounce of
household bleach and two gallons of hot (95oF. –
115oF.) water. Use a clean cloth and wipe the
interior of the ice storage bin with the sanitizing
solution, pour some of the solution down the drain.
Allow to air dry.
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How to clean the condenser and winterize.
Condenser cleaning
Winterizing
The condenser is like the radiator on a car, it has
fins and tubes that can become clogged with dirt
and lint. To clean:
1. Clean the ice making system.
2. Open the door and push and release the On/Off
switch to turn the machine off.
1. Remove the kickplate and front service panel.
2. Locate the condenser surface.
3. Turn off the water supply.
4. Drain the water reservoir by removing the rubber
cap under the reservoir - it's near the back wall of
the ice storage bin.
Rubber Cap
3. Vacuum the surface, removing all dust and lint.
Caution: Do not dent the fins.
5. Disconnect the incoming water line at the inlet
water valve.
4. Return the kickplate and front service panel to
their original positions. Fasten them to the cabinet
using the original screws.
6. Open the door, push and release the on/off
switch to turn the machine on.
7. Blow air through the inlet water valve; a tire
pump could do the job.
8. Drain pump models should have about 1/2
gallon of RV antifreeze (propylene glycol) poured
into the ice storage bin drain.
Note: Automotive antifreeze must NOT be used.
9. Switch off and unplug the machine.
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How to remove scale from the ice making system.
1. Scoop out all of the ice, either discard it or save
it in an ice chest or cooler.
2. Switch the machine Off.
3. Pour 8 ounces of Scotsman Ice
Machine Scale Remover
(available from a local Scotsman
Distributor or Dealer) into the ice
machine reservoir.
4. Switch the machine On.
Pour Scale
Remover Here
5. Operate the machine for about
2 hours.
6. Pour a gallon of hot (95oF. –
115oF.) water into the bin to melt
ice formed during the cleaning
process and to flush out the drain.
7. Clean the bin liner of mineral
scale by mixing some ice machine
scale remover and hot water, and
using that solution to scrub the
scale off of the liner.
8. Rinse the liner with hot water.
9. Sanitize the bin interior.
10. Replace the ice removed in step 1.
The ice scoop should be washed regularly, wash it
just like any other food container.
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System Information
Overall:
Electrical Sequence:
The machine uses a temperature initiated, timed
cycle to make ice.
• Refrigerant: 8 oz R-134a
• Compressor: Hermetic, 700 BTUH
• Condenser: Forced draft
A closed bin thermostat connects power to the
compressor and electronic timer. The timer NO
contacts close, connecting power to the water and
hot gas solenoids.
• Fan blade: 3 blade, 6 inch
• Evaporator: Inverted, 12 cube cells. copper,
continuous serpentine
• Metering device: Cap tube
assist
• Defrost method: Hot gas bypass with water
The compressor starts, the inlet water solenoid
valve opens and fills the reservoir. The harvest
timer starts. At the end of the pre-set harvest time,
the timer will open the NO contacts, stopping the
inlet water valve and hot gas valve. At the same
time, it closes the NC contacts, powering the fan
and pump motors. This is the beginning of the
freeze cycle.
• Spray method: 6 water jets
• Water charge: 30 ounces
• Water valve: 115 volt solenoid, .19 GPM
• Water fill time: Varies with harvest time
• Spray pump: Pedestal type.
• Drain pump: Magnetic drive, controlled by
pressure switch
The freeze cycle continues until the cube size
contacts close, this starts a freeze timer. No other
changes occur until the freeze timer expires, when
the NC contacts open and the NO contact close,
starting the harvest cycle.
• Purge method: Overflow standpipe
mechanical cube size thermostat
• Control method: Electronic timer with electro
• Cycle control: Reverse acting thermostat
change
• Cube size adjustment: Thermostat cut in
The harvest cycle is time controlled. At the end of
the harvest cycle the unit returns to a freeze cycle.
• Harvest cycle adjustment: Harvest timer
change, range between 2 and 5 minutes.
Bin control.
• Bin control: Thermostat. Opens on
temperature fall, Cut Out: 35 degrees F. Cut
In 45 degrees F. Range is adjustable.
The machine's on and off modes are regulated by a
bin thermostat. The cap tube for the bin thermostat
is in the tube that holds the scoop. The machine
will only begin ice making when the thermostat's
contacts close. The machine will stop ice making
whenever the bin thermostat contacts open.
Electrical Components:
• Compressor
• Fan motor
• Spray pump motor
• Drain pump motor
• Drain pump switch
• Inlet water solenoid valve
• Freeze & harvest timer
• Cube size thermostat
• Hot gas valve
• Bin thermostat
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SCCG30 & SCCP30
Service Manual
Water System
The water system consists of a water pump, inlet
water solenoid valve, reservoir with overflow
standpipe and spray platform.
Harvest cycle: The inlet water solenoid valve is
open during the harvest cycle. Water flows through
it to the top of the machine and onto the evaporator
platen. The water flows across the platen, warming
it up to assist in releasing the ice. Water drains
from the platen through drain holes at the platen
corners. That water, now chilled by contact with the
evaporator platen, drains into the reservoir. When
the reservoir is full, excess water drains out the
standpipe. When harvest is complete, the inlet
water solenoid closes and water stops flowing into
the machine.
Standpipe
Inlet Water Solenoid Valve
Harvest Cycle Water Schematic
Freeze cycle: The water pump takes water from
the reservoir and forces it through the 6 spray jets,
causing the water to contact the inverted cups of
the evaporator. Unfrozen water falls back into the
reservoir. As ice forms in the cups, the water level
in the reservoir fails. This continues until the
harvest cycle starts.
Evaporator
Pump
Reservoir
Drain
Freeze Cycle Water Schematic
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Components
Model and
Serial Tag
Location
Bin Thermostat Bracket and Scoop
Model and Serial Plate Location
Evaporator & Top of Unit
Evaporator Platen
Inlet Water Solenoid Valve
Condenser and Bin Thermostat
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SCCG30 & SCCP30
Service Manual
Performance Information
Listed cycle times are after the 3rd consecutive cycle, will vary a minute or so, and will be longer for built
in units.
Air Temperature
Freeze Cycle, Minutes
100
60
54
45
40
31
24
23
90
46
44
40
37
30
23
21
80
45
42
38
35
27
22
20
70
43
40
37
33
26
21
19
60
42
38
35
32
24
20
18
50
40
36
34
30
23
19
18
100
90
80
70
60
50
40
Water
Temperature
Harvest time is usually 2 minutes, longer in very
cold conditions.
Air Temperature
Total Cycle, Minutes
100
62
56
47
42
32
26
25
90
48
46
42
39
32
25
22
80
47
43
39
37
29
23
22
70
45
42
39
35
26
23
21
60
44
40
37
33
26
22
24
50
42
38
36
32
23
24
23
100
90
80
70
60
50
40
Water
Temperature
Ice per cycle: 1/2 lb
Water drained / cycle: Varies by harvest cycle
length and purge setting. Typically about 3 pints.
Compressor amps: 2.9 - 3.1
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Service Diagnosis
No Ice
Problem
Likely Cause
Probable Solution
Check breaker or fuse. Reset or
replace, restart and check
No power to unit
Power disconnected
Dirty condenser
Clean condenser
Restricted location, intake air too
hot or blocked
Eliminate restriction, have machine
moved
Evaporator thermostat not sensing
properly
Check thermostat
Remove spray platform and clean
spray jets
Very long freeze cycle
Spray jets dirty
Inlet water valve leaks through
during freeze
Check inlet water valve
Check cube formation,
Low on refrigerant
Check for bleed thru from / missing
check valve in building water
supply
Connected to hot water
Spray pump not pumping
Fan motor not turning
Pump hose disconnected
Water leak
Check pump motor
Check fan motor, check fan blade
Check hose
Check curtain, sump drain cap
Add access valve, add refrigerant
as a test. If unit makes ice, find and
correct leak.
Very low on refrigerant
Check compressor start
components
Cannot make ice
Compressor not operating
Check compressor voltage
Check compressor windings
Hot gas valve leaks through during Check hot gas valve for hot outlet
freeze
during freeze
Check compressor amp draw, if
low and all else is correct, change
compressor
Compressor inefficient
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SCCG30 & SCCP30
Service Manual
Service Diagnosis
Makes excessive noise
Problem
Likely Cause
Probable Solution
Blade is bent
Replace fan blade
Replace motor mount
Check mounting
Replace pump
Fan blade vibrates
Fan motor mount is broken
Mounting loose
Compressor vibrates
Water pump vibrates
Panels vibrate
Pump bearings worn
Mounting screws loose
Tighten screws
Makes ice, does not harvest
Problem
Likely Cause
Probable Solution
Ice wrong size
Environment changed
Adjust cube size
Check voltage to coil when unit is
in harvest, check controller
indicator light.
Hot gas valve does not open
Water temperature very low
Little heat to evaporator
Makes poor quality ice
Adjust harvest time
Problem
Likely Cause
Probable Solution
Clean jets
Spray pattern poor
Runs out of water
High TDS water supply
Spray jets dirty
Water leaking from reservoir
Groundwater supply
Correct leak
Treat water
Makes ice, but melts rapidly
Problem
Likely Cause
Probable Solution
Gravity drain hose has air block
Check for kinks or traps
Restricted drain, water in
bin
Pump model switch not starting
pump
Check / replace switch
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SCCG30 & SCCP30
Service Manual
Removal and Repair
9. Reverse to reassemble.
Curtain
Bin Thermostat
1. Disconnect electrical power.
1. Shut unit off.
2. Loosen both thumbscrews holding curtain
bracket to freezing chamber.
Electrical Shock
Hazard.
Disconnect electrical
power before
beginning removal
3. Pull out and remove curtain with bracket from ice
machine.
2. Remove service panel.
4. Reverse to reassemble.
Spray Platform
3. Remove back panel.
1. Remove curtain.
Note: If unit is built in it must be pulled out to
change the bin thermostat.
2. Lift spray platform up until it disconnects from its
fitting.
4. Pull cap tube out from the back of the ice
storage bin and cap tube holder.
3. Pull forward and remove from the ice machine.
4. Reverse to reassemble.
Water Pump
5. Remove two screws and the bin thermostat
contact section from its mounting bracket.
6. Disconnect two wires from the bin thermostat
contact section and remove the thermostat from
the ice machine.
1. Disconnect electrical power.
2. Remove spray platform
3. Remove back panel.
7. Reverse to reinstall.
Inlet Water Solenoid Valve
1. Disconnect electrical power.
2. Remove service panel.
3. Shut water supply OFF.
Note: If unit is built in it must be pulled out to
change the water pump.
4. Disconnect power and ground wires from pump
motor.
4. Disconnect inlet water supply tube from inlet
water solenoid valve.
5. Rotate pump body CW and lift up to remove it.
6. Reverse to reassemble.
5. Unplug wire harness from valve coil.
6. Remove two screws holding valve to chassis.
7. Squeeze hose clamp larger and push away from
solenoid valve outlet.
8. Pull hose from outlet of valve.
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Removal and Repair
Cube Size Thermostat
9. Disconnect wires from cube size thermostat.
10. Remove two screws holding cube size
thermostat to bracket. Pull cube size thermostat
from the machine.
1. Disconnect unit from electrical power.
11. Route new cube size thermostat bulb and cap
tube from the front, through the hole in the air baffle
and into the back of the unit.
Electrical Shock
Hazard.
Disconnect electrical
power before
beginning removal
12. Attach cube size thermostat to thermostat
bracket, attach wires.
2. Remove door.
Note: Replacement thermostat wiring may be
different from the original. Check for instructions.
3. Remove top panel.
4. Remove service panel.
5. Remove back panel.
13. Attach bracket to cabinet.
14. Route cube size cap tube and bulb up the back
of the machine and into the evaporator area.
6. Cut cable tie holding cube size bulb in
evaporator well. Pull bulb out of well.
15. Insert bulb into evaporator well. Secure with tie
wrap.
16. Return all panels to their normal positions ans
secure with the original screws.
17. Reconnect power. Test machine, adjust cube
size as needed.
Bulb Well
7. Pull cube size cap tube and bulb from
evaporator area and allow to hang freely behind
machine.
Harvest Timer
1. Disconnect electrical power.
8. Remove two screws holding thermostat bracket
to cabinet. Drop bracket down and pull forward to
get access to wires and screws.
Electrical Shock
Hazard.
Disconnect electrical
power before
beginning removal
2. Remove service panel.
3. Remove screw in center of timer, pull out and
disconnect wires.
4. Reverse to reassemble.
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SCCG30 & SCCP30
Service Manual
Removal and Repair - Cabinet Removal
Certain components require the removal of the
cabinet for repair access.
12. Pull clip up and pull water inlet elbow out of
inner elbow.
1. Shut machine off, if making ice, melt ice with hot 13. Push inner elbow back and rotate it until it
water.
points straight up, then push it back through the
hole in the back of the freezing compartment.
2. Remove all ice.
Inlet Elbow
3. Drain reservoir.
4. Remove service panel and kick plate.
5. Remove back panel.
6. Disconnect electrical power.
Inner
Elbow
Clip
Electrical Shock
Hazard.
Disconnect electrical
power before
beginning removal
7. Disconnect water and drain tubing.
8. Remove door.
9. Remove top panel.
10. Remove curtain & hanger.
14. Remove two screws holding freezing
compartment brackets to cabinet, lift brackets up.
Bracket
11. Locate elbows where water flows onto the
evaporator platen.
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SCCG30 & SCCP30
Service Manual
18. Remove 1 screw at each corner of the base.
15. Lift evaporator platen up and tilt back enough
for bin assembly to clear the base.
19. Lift bin assembly off the base.
Note: Prop evaporator assembly up. A 3' length of
3/4" PVC tubing with one end inserted into the cup
mold and the other against the base will hold it up.
The hot gas valve, fan motor, condenser and
compressor are now exposed for service.
16. Remove air baffle.
Air Baffle
17. Unplug wire harness connector (at back of bin).
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SCCG30 & SCCP30
Service Manual
Refrigeration Service
This ice machine use R-134a type refrigerant.
There are specific rules for handling that
refrigerant.
To check for system pressures, add a field supplied
clamp-on type service valve as a temporary means
of system access. After diagnosis and before final
repair, replace the clamp-on type valve with valves
that are brazed onto the process tubes of the
system.
Use a low flow of dry nitrogen when brazing on the
system.
Install a new filter drier when replacing a
refrigeration component or after a refrigerant leak
repair.
Evacuate the system to at least 300 microns and
use a micron gauge to measure the evacuation
level.
Weigh in the nameplate charge. The machine is
critically charged and a partial ounce mis-charge
will affect performance.
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