Hoshizaki America, Inc.
Hoshizaki
Modular Crescent Cuber
Models
KM-320MAH, MWH
KM-515MAH, MWH, MRH
KM-600MAH
KM-650MAH, MWH(-M), MRH
KM-901MAH, MWH, MRH/3
SERVICE MANUAL
“A Superior Degree
of Reliability”
Number: 73196
Issued: 4-29-2013
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IMPORTANT
This manual should be read carefully before the appliance is serviced. Read
the warnings and guidelines contained in this manual carefully as they provide
essential information for the continued safe use, service, and maintenance of the
appliance. Retain this manual for any further reference that may be necessary.
CONTENTS
Important Safety Information ................................................................................................. 6
I. Construction and Water/Refrigeration Circuit Diagram ....................................................... 8
A. Construction.................................................................................................................. 8
1. Air-Cooled Models (MAH) ........................................................................................ 8
2. Water-Cooled Models (MWH(-M)) ........................................................................... 9
3. Remote Models (MRH/3)....................................................................................... 10
B. Water/Refrigeration Circuit Diagram.............................................................................11
1. Air-Cooled Models (MAH) .......................................................................................11
2. Water-Cooled Models (MWH(-M)) ......................................................................... 12
3. Remote Models (MRH/3)....................................................................................... 13
II. Sequence of Operation and Service Diagnosis............................................................... 14
A. Sequence of Operation Flow Chart............................................................................. 14
1. "E" and "G" Control Board without Harvest Pump Timer Operation....................... 14
2. "G" Control Board with Harvest Pump Timer Operation ....................................... 16
B. Service Diagnosis ....................................................................................................... 17
1. "E" and "G" Control Board without Harvest Pump Timer Diagnosis....................... 18
2. "G" Control Board with Harvest Pump Timer Diagnosis ........................................ 24
C. Control Board Check................................................................................................... 30
D. Bin Control Check ....................................................................................................... 31
1. Thermostatic Bin Control Check ............................................................................ 31
2. Mechanical Bin Control Check and Cleaning ....................................................... 32
E. Float Switch Check and Cleaning ............................................................................... 34
1. Float Switch Check ................................................................................................ 34
2. Float Switch Cleaning............................................................................................ 35
F. Thermistor Check......................................................................................................... 36
G. Diagnostic Tables........................................................................................................ 37
III. Controls and Adjustments............................................................................................... 41
A. Control Board Layout .................................................................................................. 42
1. "E" Control Board .................................................................................................. 42
2. "G" Control Board ................................................................................................. 43
B. LED Lights and Audible Alarm Safeties....................................................................... 44
1. "E" Control Board .................................................................................................. 44
2. "G" Control Board ................................................................................................. 45
C. Settings and Adjustments............................................................................................ 46
1. Default Dip Switch Settings.................................................................................... 46
a) "E" and "G" Control Board without Harvest Pump Timer Operation.................. 46
b) "G" Control Board with Harvest Pump Timer Operation.................................... 46
2. Harvest Timer (S4 dip switch 1 & 2) ...................................................................... 47
3. Pump-Out Timer (S4 dip switch 3 & 4) .................................................................. 47
4. Pump-Out Frequency Control (S4 dip switch 5 & 6) .............................................. 48
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5. Bin Control Selector or Harvest Pump Timer Operation (S4 dip switch 7)............. 48
6. Factory Use (S4 dip switch 8)................................................................................ 49
7. Freeze Timer (S4 dip switch 9 & 10)....................................................................... 49
8. Float Switch Selector (S5 dip switch 1): "G" Control Board ................................... 50
9. Refill Counter (S5 dip switch 2 through 5): "G" Control Board ............................... 50
D. Control Switch ............................................................................................................. 50
IV. Refrigeration Circuit and Component Service Information.............................................. 51
A. Refrigeration Circuit Service Information .................................................................... 51
B. Component Service Information.................................................................................. 54
C. Water Regulating Valve Adjustment (water-cooled model).......................................... 54
V. Maintenance .................................................................................................................... 55
VI. Preparing the Appliance for Periods of Non-Use............................................................ 56
VII. Disposal......................................................................................................................... 58
VIII. Technical Information.................................................................................................... 59
A. Specification Sheets.................................................................................................... 59
1. KM-320MAH........................................................................................................... 59
2. KM-320MWH......................................................................................................... 60
3. KM-515MAH.......................................................................................................... 61
4. KM-515MWH......................................................................................................... 62
5. KM-515MRH.......................................................................................................... 63
6. KM-600MAH.......................................................................................................... 64
7. KM-650MAH........................................................................................................... 65
8. KM-650MWH......................................................................................................... 66
9. KM-650MWH-M..................................................................................................... 67
10. KM-650MRH........................................................................................................ 68
11. KM-901MAH ......................................................................................................... 69
12. KM-901MWH ....................................................................................................... 70
13. KM-901MRH ........................................................................................................ 71
14. KM-901MRH3 ...................................................................................................... 72
B. Performance Data ....................................................................................................... 73
1. KM-320MAH .......................................................................................................... 73
2. KM-320MWH..........................................................................................................74
3. KM-515MAH.......................................................................................................... 75
4. KM-515MWH......................................................................................................... 76
5. KM-515MRH.......................................................................................................... 77
6. KM-600MAH.......................................................................................................... 78
7. KM-650MAH........................................................................................................... 79
8. KM-650MWH......................................................................................................... 80
9. KM-650MWH-M..................................................................................................... 81
10. KM-650MRH........................................................................................................ 82
11. KM-901MAH ......................................................................................................... 83
12. KM-901MWH ....................................................................................................... 84
13. KM-901MRH ........................................................................................................ 85
14. KM-901MRH3 ...................................................................................................... 86
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C. Wiring Diagrams ......................................................................................................... 87
1. Diagrams Without Harvest Pump Timer Relays ..................................................... 87
a) KM-320M_H, KM-515M_H, KM-600MAH........................................................ 87
b) KM-650MAH, KM-650MWH, KM-901MAH, KM-901MWH............................... 88
c) KM-650MRH, KM-901MRH.............................................................................. 89
d) KM-901MRH3 .................................................................................................. 90
2. Diagrams With Harvest Pump Timer Relays.......................................................... 91
a) KM-515MAH .................................................................................................... 91
b) KM-650MAH, KM-650MWH, KM-901MAH ...................................................... 92
c) KM-650MWH-M ............................................................................................... 93
d) KM-650MRH.................................................................................................... 94
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Important Safety Information
Throughout this manual, notices appear to bring your attention to situations which could
result in death, serious injury, damage to the appliance, or damage to property.
WARNING
NOTICE
IMPORTANT
Indicates a hazardous situation which could result in death or
serious injury.
Indicates a situation which could result in damage to the
appliance or property.
Indicates important information about the use and care of the
appliance.
WARNING
The appliance should be destined only to the use for which it has been expressly
conceived. Any other use should be considered improper and therefore dangerous.
The manufacturer cannot be held responsible for injury or damage resulting from
improper, incorrect, and unreasonable use. Failure to service and maintain the
appliance in accordance with this manual will adversely affect safety, performance,
component life, and warranty coverage and may result in costly water damage.
To reduce the risk of death, electric shock, serious injury, or fire, follow basic
precautions including the following:
• Only qualified service technicians should install and service this appliance.
• The appliance must be installed in accordance with applicable national, state, and
local codes and regulations. Failure to meet these code requirements could result in
death, electric shock, serious injury, fire, or damage to the appliance.
• Electrical connection must be hard-wired and must meet national, state, and local
electrical code requirements. Failure to meet these code requirements could result
in death, electric shock, serious injury, fire, or severe damage to equipment.
• The appliance requires an independent power supply of proper capacity. See the
nameplate for electrical specifications. Failure to use an independent power supply
of proper capacity can result in a tripped breaker, blown fuses, damage to existing
wiring, or component failure. This could lead to heat generation or fire.
• THE ICEMAKER MUST BE GROUNDED. Failure to properly ground the icemaker
could result in death or serious injury.
• Before servicing the appliance, move the control switch to the "OFF" position and
turn off the power supply. Lockout/Tagout to prevent the power supply from being
turned back on inadvertently.
• To reduce the risk of electric shock, do not touch the control switch with damp
hands.
• Do not make any alterations to the unit. Alterations could result in electric shock,
injury, fire, or damage to the unit.
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WARNING, continued
• The appliance is not intended for use by persons (including children) with reduced
physical, sensory, or mental capabilities, or lack of experience and knowledge,
unless they have been given supervision or instruction concerning use of the
appliance by a person responsible for their safety.
• Children should be properly supervised around this appliance.
• Do not climb, stand, or hang on the appliance or allow children or animals to do so.
Serious injury could occur or the appliance could be damaged.
• Do not use combustible spray or place volatile or flammable substances near the
appliance. They might catch fire.
• Keep the area around the appliance clean. Dirt, dust, or insects in the appliance
could cause harm to individuals or damage to the appliance.
Additional Warning for Remote Models
• THE REMOTE CONDENSER UNIT MUST BE GROUNDED. The power supply and
ground wire to the remote condenser unit are supplied from the icemaker. Failure to
properly ground the remote condenser unit could result in death or serious injury.
• Move the icemaker control switch to the "OFF" position and turn off the power
supply to the icemaker before servicing the remote condenser unit.
Lockout/Tagout to prevent the power supply from being turned back on
inadvertently.
NOTICE
• Follow the instructions in this manual carefully to reduce the risk of costly water
damage.
• In areas where water damage is a concern, install in a contained area with a floor
drain.
• Install the appliance in a location that stays above freezing. Normal operating
ambient temperature must be within 45°F to 100°F (7°C to 38°C).
• Do not leave the appliance on during extended periods of non-use, extended
absences, or in sub-freezing temperatures. To properly prepare the appliance for
these occasions, follow the instructions in "VI. Preparing the Appliance for Periods
of Non-Use."
• Do not place objects on top of the appliance.
• The dispenser unit/ice storage bin is for ice use only. Do not store anything else in
the dispenser unit/ice storage bin.
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I. Construction and Water/Refrigeration Circuit Diagram
A. Construction
1. Air-Cooled Models (MAH)
Thermostatic
Expansion Valve
Water Supply Inlet
Spray Tubes
Hot Gas Valve
Inlet Water Valve
Thermostatic
Bin Control
Condenser
Fan Motor
Cleaning Valve
Control Switch
High-Pressure
Switch
Drier
Float Switch
Water Pump
Liquid Line Valve
KM-515MAH
Control Box
Compressor
Mechanical Bin Control and Bracket
Thermostatic Bin Control
Bracket & Bulb Holder
Model Shown: KM-515MAH
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2. Water-Cooled Models (MWH(-M))
Thermostatic
Expansion Valve
Main Transformer
KM-650MWH-M
Water Supply Inlet
Hot Gas Valve
Spray Tubes
Inlet Water Valve
High-Pressure Switch
Water Regulating
Valve
Thermostatic
Bin Control
Condenser
Cleaning Valve
Control Box
Control Switch
Float Switch
Liquid Line Valve
KM-320MWH and
KM-515MWH
Drier
Water Pump
Compressor
Mechanical Bin Control and Bracket
Thermostatic Bin Control
Bracket & Bulb Holder
Model Shown: KM-515MWH
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3. Remote Models (MRH/3)
Thermostatic
Expansion Valves
Spray Tubes
Water Supply Inlet
Hot Gas Valve
Inlet Water Valve
Cleaning Valve
Junction Boxes
Control Switch
Control Box
Thermostatic
Bin Control
Receiver Tank
Float Switch
Water Pump
Compressor
Drier
Liquid Line Valve
Mechanical Bin Control and Bracket
Thermostatic Bin Control
Bracket & Bulb Holder
Model Shown: KM-901MRH
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B. Water/Refrigeration Circuit Diagram
1. Air-Cooled Models (MAH)
Spray Tubes
Condenser
Fan
Inlet Water Valve
Drier
High-Pressure
Switch
Evaporator
Water Supply
Liquid Line Valve
(KM-515MAH)
Heat
Thermistor
Exchanger
Suction Line
Strainer
Water Pump
Float Switch
Hot Gas
Valve
Water
Tank
Discharge Line
Compressor
Pump Out
Freeze
Drain
Thermostatic Expansion Valve
Refrigeration Circuit
Water Circuit
Check Valve
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2. Water-Cooled Models (MWH(-M))
Water Regulating Valve
Condenser
Spray Tubes
Inlet Water Valve
Drier
Evaporator
Water Supply
Liquid Line Valve
(KM-320MWH and
KM-515MWH)
Heat
Thermistor
Exchanger
High-Pressure
Switch
Suction Line
Strainer
Water Pump
Float Switch
Hot Gas
Valve
Water
Tank
Discharge Line
Compressor
Pump Out
Freeze
Drain
Thermostatic Expansion Valve
Refrigeration Circuit
Water Circuit
Check Valve
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3. Remote Models (MRH/3)
Condenser
Fan
Headmaster
(C.P.R.)
Spray Tubes
Access
Valve
Inlet Water Valve
Drier
Water Supply
High-Pressure
Switch
Receiver
Strainer
Liquid Line
Valve
Hot Gas
Valve
Evaporator
Heat
Exchanger
Thermistor
Check Valves
(KM-901MRH)
Cleaning Valve
Suction Line
Water Pump
Float Switch
Water
Tank
Discharge Line
Compressor
Freeze Pump-Out
Drain
Thermostatic Expansion
Valve
Check Valve
Refrigeration Circuit
Water Circuit
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II. Sequence of Operation and Service Diagnosis
A. Sequence of Operation Flow Chart
1. "E" and "G" Control Board without Harvest Pump Timer Operation
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15
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2. "G" Control Board with Harvest Pump Timer Operation
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B. Service Diagnosis
WARNING
• The appliance should be diagnosed and repaired only by qualified service
personnel to reduce the risk of death, electric shock, serious injury, or fire.
• Risk of electric shock. Control switch in "OFF" position does not de-energize all
loads Use extreme caution and exercise safe electrical practices.
• Moving parts (e.g., fan blade) can crush and cut. Keep hands clear.
• Before servicing the appliance, move the control switch to the "OFF" position and
turn off the power supply.
• CHOKING HAZARD: Ensure all components, fasteners, and thumbscrews are
securely in place after the appliance is serviced. Make sure that none have fallen
into the dispenser unit/ice storage bin.
• Make sure all food zones in the appliance and dispenser unit/ice storage bin are
clean after service.
The diagnostic procedure is a sequence check that allows you to diagnose the electrical
system and components. Before proceeding, check for correct installation, proper voltage
per nameplate, and adequate water supply. Check CB using the steps in "II.C. Control
Board Check." Check dip switch settings to assure that S4 dip switch 3, 4, 7, 8, 9, 10 and
S5 dip switch 1 through 5 ("G" CB) are in the factory default position. S4 dip switch 1, 2,
5, 6 are cleaning adjustments and the settings are flexible. For factory default settings,
see "III.C.1. Default Dip Switch Settings."
Note: • When checking high voltage (115VAC), always choose a white (W) neutral wire to
establish a good neutral connection.
• On 3-phase models, the neutral (W) is provided through MT. To confirm a good
neutral, check for 60VAC from white (W) neutral to ground (GND). If 60VAC is
present, neutral is good. If 60VAC is not present, check 208-230VAC main power
supply to MT. If 208-230VAC is present, check MT continuity.
• When checking voltage from the CB K1 connector (10 pin connector), pull CB
K1 connector out slightly to allow room for multimeter test leads contact.
1) Turn off the power supply, then access the control box. Move the control switch to the
"OFF" position. Clear any ice from BC.
2) Check that the 115VAC 10A fuse is good.
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1. "E" and "G" Control Board without Harvest Pump Timer Diagnosis
3) Power On: Turn on the power supply, then move the control switch to the "ICE" position.
A 5-sec. delay occurs.
• "E" Control Board: CB red "POWER OK" LED turns on.
• "G" Control Board: CB red "POWER OK" LED and green "BC CLOSED" LED turn on.
Note: • CB red "POWER" LED remains on unless the 10.5VAC power supply is
interrupted (K2 connector).
• Check CB using the steps in "II.C. Control Board Check."
• "G" CB: If yellow "BC OPEN" LED is on (indicating a full bin), check MBC.
See "II.D.2. Mechanical Bin Control Check and Cleaning."
a) Power On Diagnosis: If CB red "POWER OK" LED is off, confirm closed TBC and
10A fuse is good. If TBC is open, remove ice from bulb and warm bulb in hand. If
TBC does not close, replace TBC. See "II.D.1. Thermostatic Bin Control Check."
Check for 115VAC at control switch #1 (BR) to neutral (W) then at control switch
#2 (P) to neutral (W). If 115VAC is present on #1 (BR) and not on #2 (P), replace
control switch. If 115VAC is present on control switch #2 (P), check for 115VAC at
HPS (P) to neutral (W) then HPS (BK) to neutral (W). If 115VAC is present at HPS
(P) and not at HPS (BK), HPS is open. See HPS Diagnosis below. If 115VAC is
present at HPS (BK), check for 10.5VAC at CB K2 #1 red wire to CB K2 #2 red wire.
If 10.5VAC is not present, check that the cleaning valve is closed and the interlock
switch is closed. Next, check CT continuity. If open replace CT.
b) HPS Diagnosis: Check that the condenser coil is not clogged or restricted. Let
refrigeration circuit pressures equalize. If HPS does not reset and pressures are
equalized, replace HPS. If pressures are not equalized, reclaim refrigerant and
diagnose refrigeration circuit restriction. Check that there are no restrictions in the
refrigeration circuit.
Harvest Cycle: HGV, strainer, or check valve.
Freeze Cycle: FM, FMR, TXV, HM, LLV, strainer, check valve, drier, and damaged
line set or fitting. Also confirm WRV opens in freeze cycle.
Confirm that the location meets installation requirements:
• The icemaker is not intended for outdoor use. Normal operating ambient temperature
should be within 45°F to 100°F (7°C to 38°C).
• Allow 6" (15 cm) clearance at rear, sides, and top for proper air circulation and ease
of maintenance and/or service should they be required.
• The appliance should not be located in a corrosive environment.
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4) 1-Minute Fill Cycle – LED 4 is on. WV energizes. After 1 min., CB checks for a closed
FS. If FS is closed, harvest cycle begins. If harvest cycle begins (Comp, HGV, and FMR
energize), continue to step 5. If FS is open, WV remains energized through additional
1-min. fill cycles until water enters the water tank and FS closes (low water safety
protection during initial start up and at the end of each harvest). Diagnosis: Check
that water enters the water tank. If not, check that the water supply line shut-off valve
is open and screens or external filters are clear. Check for 115VAC at CB K1 #6 (O)
to neutral (W). If 115VAC is not present, replace CB. If 115VAC is present, and WV
does not energize, check for 115VAC at WV. If 115VAC is present, check coil continuity.
If open, replace WV. If the water tank fills, but the appliance fails to start harvest (Comp
energized), check for open FS. See "II.E. Float Switch Check and Cleaning." If FS is
closed and CB fails to start the harvest cycle after 1 min., replace CB.
5) Initial Harvest Cycle – LEDs 1, 4, and 2 are on. WV continues. Comp, FMR, and
HGV energize. CB monitors the warming of the evaporator via the thermistor located
on the suction line. When the thermistor reaches 48°F (9°C), CB reads 3.9 kΩ from the
thermistor and turns harvest termination over to the harvest timer (S4 dip switch 1 & 2).
The harvest timer has settings of 60, 90, 120, and 180 sec. The pump-out timer (S4 dip
switch 3 & 4) acts in place of the harvest timer during cycles with a pump-out (S4 dip
switch 5 & 6). WV remains energized during harvest for a maximum of 6 min. or the
length of harvest, whichever is shorter.
a) Comp Diagnosis: Check that evaporator is warming. If not, confirm that Comp
energizes. If not, check for 115VAC at CB K1 #1 or #9 (V) to neutral (W). If 115VAC is
not present, check for 115VAC at CB K1 #7 or #10 (BR) to neutral (W). If 115VAC is
present at #7 or #10 (BR) and not at #1 or #9 (V), replace CB. If 115VAC is present,
check for 115VAC at CR or MC solenoid. If 115VAC is present, confirm contacts are
closed. If not, replace CR or MC. If CR or MC contacts are closed, check Comp
external overload, Comp start and run capacitors, Comp start relay, and Comp motor
winding.
b) HGV Diagnosis: If Comp is energized and evaporator is not warming, check that
HGV energizes and opens. Check for 115VAC at CB K1 #2 (P) to neutral (W).
If 115VAC is not present, replace CB. If 115VAC is present, check for 115VAC at HGV
coil and check HGV coil continuity. Replace as needed.
c) LLV Diagnosis: Confirm that LLV is de-energized and closed (not bypassing).
If energized, replace CB. If de-energized and bypassing, replace LLV.
d) WRV Diagnosis: Confirm WRV is not leaking by.
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e) Initial Harvest Cycle Termination Diagnosis: When the thermistor reaches 48°F
(9°C), CB reads 3.9 kΩ from the thermistor and turns harvest termination over to
the harvest timer (S4 dip switch 1 & 2). Check discharge line temperature. For a
thermistor check, see "II.F. Thermistor Check." If 1-min. fill cycle starts after harvest
timer terminates, check that FS is clean and operating properly, see "II.E. Float
Switch Check and Cleaning." If FS is closed, CB proceeds to the next cycle. If not,
replace CB.
Note: The minimum total time allowed by CB for a complete harvest cycle is 2 min.
Maximum harvest time allowed is 20 min.
NOTICE! On models with "G" control board and no harvest pump timer relays,
S4 dip switch 7 must remain off. Otherwise, PM energizes in reverse direction the
last 50 seconds of harvest and empties water from water tank.
6) Freeze Cycle – LED 1 is on. Comp and FMR continue. PM, FM, and LLV energize.
WV and HGV de-energize. Appliance is held in freeze by a 5-min. short cycle protection
timer. After 5-min. timer terminates and FS opens, freeze cycle terminates.
a) Freeze Cycle Diagnosis: Confirm Comp and FMR continue. Confirm that
PM, FM, and LLV energize. Confirm WRV opens. Next, confirm WV and HGV
de-energize. During the first 5 min. of freeze, confirm evaporator is cooling. If not,
confirm WV de-energized (not leaking by), HGV de-energized (not bypassing),
LLV and FM energize, TXV and HM operate correctly, WRV opens, Comp is
efficient, and refrigerant charge is correct. See "VIII.A. Specification Sheet" and
"VIII.B. Performance Data."
b) Comp and FMR Diagnosis: If Comp and FMR de-energize once freeze begins,
check that appliance has not shut off on HPS ("POWER OK" LED off). If so, check
"3)b) HPS Diagnosis" above. If "POWER OK" LED is on, check for 115VAC at CB
K1 #1 (V) or #9 (V) to neutral (W). If 115VAC is not present and LED 1 is on, replace
CB. If 115VAC is present, check for 115VAC at CR or MC coil. If 115VAC is present,
check CR or MC coil and contact continuity. Replace as needed. If CR or MC is ok,
check Comp external overload, start relay, and start and run capacitors. Next, check
Comp motor winding continuity. If Comp is energized but evaporator is not cooling,
check for an inefficient Comp. See "VIII.B. Performance Data." If Comp is energized
but FMR is not, check for 115VAC at the FMR junction box. If 115VAC is not present,
check icemaker wiring connections. If 115VAC is present, check for voltage at
condenser unit. If 115VAC is not present, check field wiring connections. If 115VAC is
present, check FMR capacitor, motor winding, and fan blade for binding.
c) WV and HGV Diagnosis: If WV is energized, check for 115VAC at CB K1 #6 (O) to
neutral (W). If 115VAC is present after PM energizes, replace CB. If 115VAC is not
present, replace WV (bypassing). If HGV did not de-energize, check for 115VAC at
CB K1 #2 (P) to neutral (W). If 115VAC is present after PM energizes, replace CB.
If 115VAC is not present, replace HGV (bypassing).
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d) PM Diagnosis: Confirm water is flowing over evaporator from PM and not WV. If PM
de-energizes once freeze begins, check for 115VAC at CB K1 #4 (R) to neutral (W).
If 115VAC is not present, replace CB. If 115VAC is present and PM is de-energized,
check for 115VAC at control switch #5 (R) to neutral (W). If 115VAC is present at CB
K1 #4 (R) and not at control switch #5 (R), check control switch continuity between
#5 (R) and #4 (R). Replace as needed. If 115VAC is present at control switch #5 (R)
to neutral (W), check PM capacitor and motor winding continuity.
e) FM and LLV Diagnosis: If FM or LLV does not energize, check for 115VAC at CB
K1 #3 (BK) to neutral (W). If 115VAC is not present, replace CB. If 115VAC is present:
For FM, check capacitor, motor winding, and blade for binding.
For LLV, check coil voltage and continuity.
f) Refrigerant Pressures, HM, and TXV Diagnosis: If evaporator is still not cooling,
check refrigerant pressures. See "VIII.B. Performance Data."
Next, check HM operation. If refrigeration pressures are above HM setpoint and
HM is bypassing, replace HM. Check TXV for proper operation. Remove TXV bulb
and hold it in your hand, refrigerant low-side pressure should rise, place TXV bulb in
ice water, refrigerant low-side pressure should drop. A 10 to 15 pound pressure swing
between warm and cold conditions indicate a good TXV. If a 10 to 15 pound swing is
not present, replace TXV.
g) WRV Diagnosis: WRV is factory set and generally no adjustment is required.
If WRV fails to open in freeze, check for proper refrigerant pressures. See "VIII.B.
Performance Data." If refrigerant pressures are correct and WRV does not open,
adjust or replace as needed. See "IV.C. Water Regulating Valve Adjustment
(water-cooled models)."
h) Freeze Termination Diagnosis: After 5 min. in freeze, disconnect CB K5 FS
connector. 15 sec. later appliance should switch out of the freeze cycle (15 second
delay after FS opens before terminating the freeze cycle). If appliance remains in
freeze longer than 15 sec. after FS removed, replace CB. If appliance switches with
FS removed but would previously not switch out of freeze with FS connected (long
freeze - 3 beep alarm), see "II.E. Float Switch Check and Cleaning."
Note: Normal freeze cycle will last 20 to 40 min. depending on model and conditions.
Cycle times and pressures should follow performance data provided in this
manual. See "VIII.B. Performance Data."
i) Short Freeze Cycle Diagnosis: Confirm water tank fills and overflows during 1 min.
fill and harvest cycles. If not, check water supply filters, shut-off valve, WV screen.
If water tank empties before 5 min. timer terminates and freeze cycle is short, check
that CV is not leaking by (water flowing down the potable drain). If CV is leaking by,
remove and clean CV, replace rubber seat and spring if necessary. If water tank is
full, see "II.E. Float Switch Check and Cleaning" for erratic operating FS.
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7) Pump-Out Cycle – LEDs 1, 3, and 2 are on (10/20 second pump-out). Timing of the
first pump-out is dependent on CB. "E" CB first pump-out is after the first freeze cycle.
"G" CB first pump-out is determined by S4 dip switch 5 & 6. See the table below.
"E" & "G" Control Board Settings
1st Pump-Out
S4 Dip Switch Setting
Pump-Out
Frequency
"E" Control Board
After 1st freeze cycle
"G" Control Board
No. 5
OFF
ON
No. 6
OFF
OFF
ON
Every cycle
Every 2 cycles
Every 5 cycles
Every 10 cycles
After 2nd freeze cycle
After 3rd freeze cycle
After 6th freeze cycle
After 11th freeze cycle
OFF
ON
ON
Comp and FMR continue, HGV energizes. If S4 dip switch 3 & 4 are set to 3 off and 4
on, LED 4 turns on and WV energizes. FM and LLV de-energize. PM stops for 2 sec.,
then reverses for 10/20 sec. depending on pump-out timer (S4 dip switch 3 & 4) setting.
When the pump-out timer terminates, pump-out is complete. The pump-out frequency
control (S4 dip switch 5 & 6) is factory set, and generally no adjustment is required.
However, the pump-out frequency control can be set to have a pump-out occur every
cycle, or every 2, 5, or 10 cycles. For details, see "III.C.4. Pump-Out Frequency Control
(S4 dip switch 5 & 6)."
Pump-Out Diagnosis: In the freeze cycle before pump-out (see table above),
disconnect CB black K5 connector (FS connector) after 5 min. of freeze. Check that PM
stops and re-starts and water is flowing down the drain through CV. If PM does not stop
and re-start, check that CB LEDs 1, 3, and 2 are on. If not, replace CB. If LEDs 1, 3,
and 2 are on and PM does not energize, check for 115VAC at
CB K1 #5 (DBU) to neutral (W). If 115VAC is not present, replace CB.
If 115VAC is present, make sure the drain line is not clogged and that CV is clean and
operating properly.
Confirm FM and LLV de-energize. If FM or LLV is energized with LEDs 1, 3, and 2 on,
replace CB.
8) Normal Harvest Cycle – Same as the initial harvest cycle. Return to step 5 above.
Note: Appliance continues to cycle until TBC or MBC is satisfied or power is turned off.
The appliance always restarts at the 1-min. fill cycle.
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9) Shutdown
a) "E" Control Board:Thermostatic Bin Control (TBC):
When the appliance is running, hold ice in contact with the thermostatic
bulb. TBC switch opens within 10 sec., shutting down the appliance. TBC is
factory set, and generally no adjustment is required. However, adjustment
may be needed in some conditions, particularly at higher altitude locations.
NOTICE! Do not adjust S4 dip switch 7 out of the factory default position.
This dip switch must be left in the factory default position or the
appliance will not operate correctly. Diagnosis: See "II.D.1. Thermostatic Bin
Control Check and Cleaning."
b) Mechanical Bin Control:
See "II.D.2. Mechanical Bin Control Check and Cleaning."
Legend: CB–control board; Comp–compressor; CV–check valve; FM–fan motor;
FMR–fan motor-remote; FS–float switch; HGV–hot gas valve; HM–headmaster
(C.P.R.); HPS–high-pressure switch; LLV–liquid line valve; MBC–mechanical
bin control; PM–pump motor; TBC–thermostatic bin control; TXV–thermostatic
expansion valve; WRV–water regulating valve; WV–inlet water valve
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2. "G" Control Board with Harvest Pump Timer Diagnosis
3) Power On: Turn on the power supply, then move the control switch to the "ICE" position.
A 5-sec. delay occurs. CB red "POWER OK" LED and green "BC CLOSED" LED turn
on. If yellow "BC OPEN" LED is on (indicating a full bin), check MBC. Move ice away
from MBC actuator paddle. If yellow "BC OPEN" LED stays on, see "II.D.2. Mechanical
Bin Control (MBC) Check."
Note: • CB red "POWER OK" LED remains on unless the 10.5VAC power supply is
interrupted (K2 connector).
• Check CB using the steps in "II.C. Control Board Check."
• Confirm CB green "BC CLOSED" LED is on. If CB yellow "BC OPEN" LED is on,
remove ice from BC. If no ice is around BC and yellow "BC OPEN" LED is on,
see "II.D.2. Mechanical Bin Control (MBC) Check."
a) Power On Diagnosis: If CB red "POWER OK" LED is off, confirm 10A fuse is good.
Check for 115VAC at control switch #1 (BR) to neutral (W) then at control switch
#2 (P) to neutral (W). If 115VAC is present on #1 (BR) and not on #2 (P), replace
control switch. If 115VAC is present on control switch #2 (P), check for 115VAC at
HPS (P) to neutral (W) then HPS (BK) to neutral (W). If 115VAC is present at HPS
(P) and not at HPS (BK), HPS is open. See HPS Diagnosis below. If 115VAC is
present at HPS (BK), check for 10.5VAC at CB K2 #1 red wire to CB K2 #2 red wire.
If 10.5VAC is not present, check that the cleaning valve is closed and the interlock
switch is closed. Next, check CT continuity. If open, replace CT.
b) HPS Diagnosis: Check that the condenser coil is not clogged or restricted. Let
refrigeration circuit pressures equalize. If HPS does not reset and pressures are
equalized, replace HPS. If pressures are not equalized, reclaim refrigerant and
diagnose refrigeration circuit restriction. Check that there are no restrictions in the
refrigeration circuit.
Harvest Cycle: HGV, strainer, or check valve.
Freeze Cycle: FM, FMR, TXV, WRV, HM, LLV, strainer, check valve, drier, and
damaged line set or fitting.
Confirm that the location meets installation requirements:
• The appliance is not intended for outdoor use. Normal operating ambient temperature
should be within 45°F to 100°F (7°C to 38°C).
• Allow 6" (15 cm) clearance at rear, sides, and top for proper air circulation and ease
of maintenance and/or service should they be required.
• The appliance should not be located in a corrosive environment.
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4) 1-Min. Fill Cycle – LED 4 is on. WV and X11 relay energize. After 1 min., CB checks for
a closed FS. If FS is closed, the harvest cycle begins. If harvest cycle begins (Comp,
HGV, FMR energized), continue to step 5a. If FS is open, WV remains energized
through additional 1-min. fill cycles until water enters the water tank and FS closes
(low water safety protection during initial start up and at the end of each harvest).
Diagnosis: Check that water enters the water tank. If not, check that the water supply
line shut-off valve is open and screens or external filters are clear. Check for 115VAC
at CB K1 #6 (O) to neutral (W). If 115VAC is not present, replace CB. If 115VAC is
present, and WV does not energize, check for 115VAC at WV. If 115VAC is present,
check coil continuity. If open, replace WV. If the water tank fills, but the appliance fails to
start harvest (Comp energized), check for open FS. See "II.E. Float Switch Check and
Cleaning." If FS is closed and CB fails to start the harvest cycle after 1 min., replace CB.
5a) Initial Harvest Cycle – LEDs 1, 4, and 2 are on. WV and X11 relay continue. Comp,
FMR, HGV, and X10 relay energize. CB monitors the warming of the evaporator via the
thermistor located on the suction line. When the thermistor reaches 48°F (9°C), CB
reads 3.9 kΩ from the thermistor and turns harvest termination over to the harvest timer
(S4 dip switch 1 & 2). The harvest timer has settings of 60, 90, 120, and 180 sec. The
pump-out timer (S4 dip switch 3 & 4) acts in place of the harvest timer during cycles
with a pump-out (S4 dip switch 5 & 6). WV and X11 relay are energized during harvest
for a maximum of 6 min. or the length of harvest minus 50 sec., whichever is shorter.
50 sec. before harvest terminates, PM energizes. See step 5b below.
a) Comp Diagnosis: Check that evaporator is warming. If not, confirm that Comp
energizes. If not, check for 115VAC at CB K1 #1 or #9 (V) to neutral (W). If 115VAC is
not present, check for 115VAC at CB K1 #7 or #10 (BR) to neutral (W). If 115VAC is
present at #7 or #10 (BR) and not at #1 or #9 (V), replace CB. If 115VAC is present,
check for 115VAC at CR or MC solenoid. If 115VAC is present, confirm contacts are
closed. If not, replace CR or MC. If CR or MC contacts are closed, check Comp
external overload, Comp start and run capacitors, Comp start relay, and Comp
motor winding. If Comp is energized and evaporator is not warming, check that HGV
energizes and opens. Check for 115VAC at CB K1 #2 (P) to a neutral (W). If 115VAC
is not present and LED 2 is on, replace CB. If 115VAC is present, check coil voltage
and continuity. Replace as needed. Confirm that LLV is de-energized and closed (not
bypassing). If energized, replace CB. If de-energized and bypassing, replace LLV.
Confirm WRV is not leaking by. If evaporator is warming, PM energizes for the last 50
sec. of harvest.
b) HGV Diagnosis: If Comp is energized and evaporator is not warming, check that
HGV energizes and opens. Check for 115VAC at CB K1 #2 (P) to neutral (W).
If 115VAC is not present, replace CB. If 115VAC is present, check for 115VAC at HGV
coil and check HGV coil continuity. Replace as needed.
c) LLV Diagnosis: Confirm that LLV is de-energized and closed (not bypassing). If
energized, replace CB. If de-energized and bypassing, replace LLV.
d) WRV Diagnosis: Confirm WRV is not leaking by.
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5b) Harvest Pump Timer – LEDs 1, 3, and 2 are on. When the thermistor reaches 48°F
(9°C), CB reads 3.9 kΩ from the thermistor and turns harvest termination over to the
harvest timer (S4 dip switch 1 & 2). 50 sec. before the harvest timer terminates, LED
3 turns on and PM energizes. Comp, FMR, HGV, and X10 relay continue. LED 4 turns
off, WV and X11 relay de-energize.
Diagnosis: Place a thermometer on the suction line next to the thermistor. Has it
warmed to 48°F (9°C) or warmer? Confirm thermistor status. See "II.F. Thermistor
Check." If the thermistor reading is in proper range, dip switch 7 is on, and PM does
not energize 50 sec. before harvest terminates, replace CB. If WV continues, check for
115VAC at CB K1 #6 (O). If 115VAC is present, and LED 4 is off, replace CB. If LED 3 is
on and PM is not energized, check for 115VAC at CB K1 #5 (DBU). If 115VAC is not
present, replace CB. If 115VAC is present and PM is not energized, check for 115VAC
at X10 relay terminal #7 (Y) to neutral (W). If 115VAC is not present, check for 115VAC
at X10 relay terminal #3 (P) to neutral (W) and X10 relay terminal #5 (Y) to neutral (W).
If 115VAC is present on terminal #3 (P) and not on terminal #5 (Y), replace X10 relay.
If 115VAC is present on X10 relay terminal #7 (Y) and PM is not energized, check for
115VAC at X10 relay terminal #4 (R) to neutral (W) and terminal #6 (DBU) to neutral
(W). If 115VAC is present on terminal #6 (DBU) and not on terminal #4 (R), replace X10
relay. If 115VAC is present on X10 relay terminal #4 (R), check control switch contact
continuity between terminals #4 (R) and #5 (R). If contacts are open, replace control
switch. If contacts are closed and 115VAC is present between control switch terminal #5
(R) and neutral (W), check PM capacitor and motor winding continuity.
5c) Initial Harvest Cycle Termination Diagnosis: When the thermistor reaches 48°F
(9°C), CB reads 3.9 kΩ from the thermistor and turns harvest termination over to the
harvest timer (S4 dip switch 1 & 2). Check discharge line temperature. For a thermistor
check, see "II.F. Thermistor Check." If 1-min. fill cycle starts after harvest timer
terminates, check that FS is clean and operating properly, see "II.E. Float Switch Check
and Cleaning." If FS is closed, CB proceeds to the next cycle. If not, replace CB.
Note: The minimum total time allowed by CB for a complete harvest cycle is 2 min.
Maximum harvest time allowed is 20 min.
NOTICE! S4 dip switch 7 must remain on. Otherwise, PM will not energize during
the last 50 sec. of harvest.
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6) Freeze Cycle – LED 1 is on. Comp, FMR, and PM continue. FM and LLV energize.
HGV and X10 relay de-energize. Appliance is held in freeze by a 5-min. short cycle
protection timer. After 5-min. timer terminates and FS opens, freeze cycle terminates.
Note: PM power supply switches from CB K1 #5 (DBU) in harvest to K1 #4 (R) in freeze.
a) Freeze Cycle Diagnosis: Confirm Comp, FMR, and PM continue. Confirm that
FM and LLV energize. Confirm WRV opens. Next, confirm HGV and X10 relay
de-energize. During the first 5 min. of freeze, confirm evaporator is cooling. If not,
confirm WV de-energized (not leaking by), HGV de-energized (not bypassing),
LLV and FM energize, TXV and HM operate correctly, WRV opens, Comp is
efficient, and refrigerant charge is correct. See "VIII.A. Specification Sheet" and
"VIII.B. Performance Data."
b) Comp and FMR Diagnosis: If Comp and FMR de-energize once freeze begins,
check that appliance has not shut off on HPS ("POWER OK" LED off). If so, check
"3)b) HPS Diagnosis" above. If "POWER OK" LED is on, check for 115VAC at CB K1
#1 (V) or #9 (V) to neutral (W). If 115VAC is not present and LED 1 is on, replace CB.
If 115VAC is present, check for 115VAC at CR or MC coil. If 115VAC is present, check
CR or MC coil and contact continuity. Replace as needed. If CR or MC is okay, check
Comp start relay and start and run capacitors. Next, check Comp motor winding
continuity. If Comp is energized but evaporator is not cooling, check for an inefficient
Comp. See "VIII.B. Performance Data." If Comp is energized but FMR is not, check
for 115VAC at the FMR junction box. If 115VAC is not present, check icemaker wiring
connections. If 115VAC is present, check for voltage at condenser unit. If 115VAC
is not present, check field wiring connections. If 115VAC is present, check FMR
capacitor, motor winding, and fan blade for binding.
c) WV and HGV Diagnosis: If WV is energized, check for 115VAC at CB K1 #6 (O) to
neutral (W). If 115VAC is present after PM energizes in harvest cycle, replace CB.
If 115VAC is not present, replace WV (bypassing). If HGV did not de-energize at
the end of harvest, check for 115VAC at CB K1 #2 (P) to neutral (W). If 115VAC is
present 50 sec. after PM energizes, replace CB. If 115VAC is not present, replace
HGV (bypassing).
d) PM Diagnosis: Confirm water is flowing over evaporator from PM and not WV. If PM
de-energizes once freeze begins, check for 115VAC at CB K1 #4 (R) to neutral (W).
If 115VAC is not present, replace CB. If 115VAC is present and PM is de-energized,
check for 115VAC at control switch #5 (R) to neutral (W). If 115VAC is present at CB
K1 #4 (R) and not at control switch #5 (R), check control switch continuity between
#5 (R) and #4 (R). Replace as needed. If 115VAC is present at control switch #5 (R)
to neutral (W), check PM capacitor and motor winding continuity.
e) FM and LLV Diagnosis: If FM or LLV does not energize, check for 115VAC at CB
K1 #3 (BK) to neutral (W). If 115VAC is not present, replace CB. If 115VAC is present:
For FM, check capacitor, motor winding, and blade for binding.
For LLV, check coil voltage and continuity.
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f) Refrigerant Pressures, HM, and TXV Diagnosis: If evaporator is still not cooling,
check refrigerant pressures. See "VIII.B. Performance Data."
Next, check HM operation. If refrigeration pressures are above HM setpoint and
HM is bypassing, replace HM. Check TXV for proper operation. Remove TXV bulb
and hold it in your hand, refrigerant low-side pressure should rise, place TXV bulb in
ice water, refrigerant low-side pressure should drop. A 10 to 15 pound pressure swing
between warm and cold conditions indicate a good TXV. If a 10 to 15 pound swing is
not present, replace TXV.
g) WRV Diagnosis: WRV is factory set and generally no adjustment is required.
If WRV fails to open in freeze, check for proper refrigerant pressures. See "VIII.B.
Performance Data." If refrigerant pressures are correct and WRV does not open,
adjust or replace as needed. See "IV.C. Water Regulating Valve Adjustment
(water-cooled models)."
h) Freeze Termination Diagnosis: After 5 min. in freeze, disconnect CB K5 FS
connector. 15 sec. later appliance should switch out of the freeze cycle (15 second
delay after FS opens before terminating the freeze cycle). If appliance remains in
freeze longer than 15 sec. after FS removed, replace CB. If appliance switches with
FS removed but would previously not switch out of freeze with FS connected (long
freeze - 3 beep alarm), see "II.E. Float Switch Check and Cleaning."
Note: Normal freeze cycle will last 20 to 40 min. depending on model and conditions.
Cycle times and pressures should follow performance data provided in this
manual. See "VIII.B. Performance Data."
i) Short Freeze Cycle Diagnosis: Confirm water tank fills and overflows during 1 min.
fill and harvest cycles. If not, check water supply filters, shut-off valve, WV screen.
If water tank empties before 5 min. timer terminates and freeze cycle is short, check
that CV is not leaking by (water flowing down the potable drain). If CV is leaking by,
remove and clean CV, replace rubber seat and spring if necessary. If water tank is
full, see "II.E. Float Switch Check and Cleaning." for erratic operating FS.
7) Pump-Out Cycle – LEDs 1, 3, and 2 are on (10/20 second pump-out). Timing of the
first pump-out is determined by S4 dip switch 5 & 6. See the table below.
"G" Control Board Settings
S4 Dip Switch Setting
Pump-Out
Frequency
"G" Control Board
No. 5
OFF
ON
No. 6
OFF
OFF
ON
Every cycle
Every 2 cycles
Every 5 cycles
Every 10 cycles
After 2nd freeze cycle
After 3rd freeze cycle
After 6th freeze cycle
After 11th freeze cycle
OFF
ON
ON
Comp and FMR continue, HGV energizes. If S4 dip switch 3 & 4 are set to 3 off
and 4 on, LED 4 turns on and WV and X11 relay energize, energizing X10 relay.
NOTICE! S4 dip switch 3 & 4 must not be set to 3 off and 4 on. Otherwise, PM
will rotate in freeze cycle direction instead of pump-out direction. FM and LLV
de-energize. PM stops for 2 sec., then reverses for 10/20 sec. depending on pump-out
timer (S4 dip switch 3 & 4) setting. When the pump-out timer terminates, pump-out
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is complete. The pump-out frequency control (S4 dip switch 5 & 6) is factory set, and
generally no adjustment is required. However, the pump-out frequency control can be
set to have a pump-out occur every cycle, or every 2, 5, or 10 cycles. For details, see
"III.C.4. Pump-Out Frequency Control (S4 dip switch 5 & 6)."
Pump-Out Diagnosis: In the freeze cycle before pump-out (see table above), after
5 min. of freeze disconnect CB black K5 connector (FS connector). Check that PM
stops and re-starts and that PM rotation is correct (water flowing down the drain through
CV). If PM does not stop and re-start, check that CB LEDs 1, 3, and 2 are on. If not,
replace CB. If LEDs 1, 3, and 2 are on and PM does not energize, check for 115VAC
at CB K1 #5 (DBU) to neutral (W). If 115VAC is not present, replace CB. If 115VAC
is present, check that X10 relay is de-energized. If not, check X11 relay status. If X11
relay is energized, replace CB. If X11 relay is de-energized and X10 relay is energized,
replace X11 relay (contacts sticking). If X10 relay is de-energized, check for 115VAC
at terminal #6 (DBU) to neutral (W) and terminal #2 (DBU) to neutral (W). If 115VAC is
present on terminal #6 (DBU) and not on terminal #2 (DBU), replace X10 relay. If PM is
energized and rotating in pump-out rotation, make sure the drain line is not clogged and
that CV is clean and operating properly.
Confirm FM and LLV de-energize. If FM or LLV are energized with LEDs 1, 3, and 2 on,
replace CB.
8) Normal Harvest Cycle – Same as the initial harvest cycle. Return to step 5a) above.
Note: Appliance continues to cycle until MBC is satisfied or power is switched off. The
appliance always restarts at the 1-min. fill cycle.
9) Shutdown
Mechanical Bin Control:
See "II.D.2. Mechanical Bin Control Check."
Legend: CB–control board; Comp–compressor; CV–check valve; FM–fan motor;
FMR–fan motor remote; FS–float switch; HGV–hot gas valve; HM–headmaster
(C.P.R.); HPS–high-pressure switch; LLV–liquid line valve; MBC–mechanical
bin control; PM–pump motor; TXV–thermostatic expansion valve; WRV–water
regulating Valve; WV–inlet water valve
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C. Control Board Check
Before replacing CB that does not show a visible defect and that you suspect is bad,
always conduct the following check procedure. This procedure will help you verify your
diagnosis.
Alarm Reset: If CB is in alarm (beeping), press the "ALARM RESET" button on CB
while CB is beeping. WARNING! Risk of electric shock. Care should be
taken not to touch live terminals. Once reset, the icemaker starts at the
1-minute fill cycle. For audible alarm information, see "III.B. LED Lights and
Audible Alarm Safeties."
1) Check the dip switch settings to assure that S4 dip switch 3, 4, 7, 8, 9, 10 and S5 dip
switch 1 through 5 ("G" CB) are in the factory default position. S4 dip switch 1, 2, 5, 6
are cleaning adjustments and the settings are flexible. For factory default settings, see
"III.C.1. Default Dip Switch Settings."
2) Move the control switch to the "ICE" position. If the red "POWER OK" LED is on, control
voltage is good, continue to step 3. If the "POWER OK" LED is off, check CT secondary
circuit. CT output is 10.5VAC at 115VAC primary input. If the secondary circuit has
proper voltage and the red LED is off, replace CB.
If the secondary circuit does not have proper voltage, check CT primary circuit. Check
for 115VAC at CB K1 connector pin #10 (BR) to neutral (W) for 115VAC. Always choose
a white (W) neutral wire to establish a good neutral connection when checking voltages.
For additional checks, see "II.G.1. No Ice Production."
3) The "OUTPUT TEST" button provides a relay sequence test. Make sure the control
switch is in the "ICE" position, then press the "OUTPUT TEST" button. For the correct
lighting sequence, see the table below. Note that the order of the LEDs from the outer
edge of the control board is 1, 4, 3, 2. Components (e.g., compressor) cycle during the
test.
Control
Correct LED
Board Lighting Sequence
"E"
"G"
2, 3, 4, 1
1, 4, 3, 2
Following the test, the icemaker begins operation at the 1-minute fill cycle for both "E"
and "G" control boards. If the LEDs do not light as described above, replace CB.
4) To verify voltage output from CB to the components, slide the CB K1 connector out far
enough to allow multimeter lead contact. With the icemaker in the cycle to be tested,
check output voltage from the corresponding pin on CB K1 connector to a neutral
(W wire). If output voltage is not found and the appropriate LED is on, replace CB.
Legend: CB–control board; CT–control transformer
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D. Bin Control Check
1.Thermostatic Bin Control Check
TBC shuts down the icemaker within 10 sec. when ice contacts the thermostatic bulb,
regardless of the cycle at activation.
NOTICE
When the ambient temperature is below 45°F (7°C), TBC opens and shuts down
the appliance even if the ice storage bin is empty. When BC is set in the prohibited
range, the appliance operates continuously even if the ice storage bin is filled with
ice. Setting in the prohibited range may result in severe damage to the appliance.
TBC is factory set, and generally no adjustment is required. However, adjustment may be
needed in some conditions, particularly at higher altitude locations.
Note: If used on "G" control boards, a jumper (4A4883G01) must be placed on the CB
red K4 connector. Otherwise, CB yellow "BC OPEN" LED is on and appliance will not
start.
To check TBC, follow the steps below.
1) Turn off the power supply.
2) Remove the front panel, then move the control switch to the "OFF" position.
3) Remove the control box cover and base cover, then clear any ice away from TBC bulb.
4) Disconnect TBC wires from TBC switch.
5) Hold your hand around the bulb to warm it up.
6) Check for continuity across TBC switch. If closed, continue to step 6. If open, adjust or
replace TBC.
7) With the multimeter test leads still in place, hold ice on TBC bulb to lower the
temperature. Within 10 sec., TBC switch should open. If it remains closed, adjust or
replace TBC.
Legend: TBC–thermostatic bin control
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2. Mechanical Bin Control Check and Cleaning
a) Mechanical Bin Control Check
This appliance uses a lever-actuated proximity switch to control the ice level in the
storage bin. No adjustment is required.
To check TBC, follow the steps below.
1) Turn off the power supply.
2) Remove the front panel, then move the control switch to the "OFF" position.
MBC Connector
(to control
board K4 (red)
connector)
3) Remove the control box cover and base cover, then clear any
ice away from MBC.
4) Check MBC wire harness connections. See Fig. 1.
5) Disconnect MBC connector from CB K4 connector.
6) Check for continuity across the wires of
MBC connector. When the actuator paddle
is not engaged, MBC switch is closed.
If open, check that the wire harness
connector is properly connected and that
the actuator paddle is not sticking. Clean if
necessary. See "II.D.2.b) Mechanical Bin
Control Cleaning." If MBC switch still reads
open, replace MBC.
MBC
MBC Wire
Harness (white)
Connector
Actuator
Paddle
Fig. 1
Model Shown: KM-901M_H/3
7) Press and hold the actuator paddle; check for continuity across the wires of MBC
connector. When the actuator paddle is engaged, MBC switch is open. If closed, check
that the actuator paddle is not restricted. Clean if necessary. See "II.D.2.b) Mechanical
Bin Control Cleaning." If MBC switch still reads closed, replace MBC.
8) Reconnect MBC connector to CB K4 connector, then move the control switch to the
"ICE" position. Turn on the power supply.
9) Check that CB green "BC CLOSED" LED is on.
10) Allow the icemaker to cycle on. Press and hold the actuator paddle. CB yellow
"BC OPEN" LED should turn on and the icemaker should shut down according to the
chart below. If it does not, replace CB.
Cycle at
Shutdown
Mechanical Bin
Control Activation
Fill Cycle
15 sec. after activation.
Harvest Cycle
At the end of the harvest cycle, or up to 15 sec. into the freeze cycle if activated at the
end of the harvest cycle.
Freeze Cycle
15 sec. after activation if activated at least 15 sec. before the 5-min. short cycle
protection timer terminates. Otherwise, at the end of the next harvest cycle.
Legend: MBC–mechanical bin control; CB–control board
32
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b) Mechanical Bin Control Cleaning
Scale may build up on MBC. Scale can cause the actuator paddle and magnet to stick. In
this case, MBC should be cleaned.
WARNING
CHOKING HAZARD: Ensure all components, fasteners, and thumbscrews are
securely in place after the icemaker is serviced. Make sure that none have fallen
into the dispense unit/ice storage bin.
1) Turn off the power supply.
2) Remove the front panel and base cover, then move the control switch to the "OFF"
position.
3) Clear any ice away from MBC.
4) Disconnect MBC connector from CB K4 connector, then remove MBC from the
icemaker.
5) Remove the actuator paddle from the switch mount. See Fig. 2.
6) Wipe down MBC with a mixture of 1 part of Hoshizaki "Scale Away" and 25 parts of
warm water. Rinse the parts thoroughly with clean water.
7) Reassemble MBC and replace it in its correct position.
Note: If the magnet was removed for cleaning, be sure to replace it in its correct
position.
8) Reconnect MBC connector to CB K4 connector, then move the control switch to the
"ICE" position.
9) Replace the control box cover and base cover in their correct positions.
10) Turn on the power supply to start the automatic icemaking process.
11) Replace the front panel in its correct position.
Legend: MBC–mechanical bin control
MBC Wire
Harness (white)
Connector
KM-901M_H/3
MBC Bracket
Switch Mount
Actuator
Paddle
MBC Connector
(to control
Bin Control
board K4 (red)
connector)
Proximity Switch
Open (bin full,
icemaker off or
shutting down)
Bin Control Proximity
Switch Closed
(calling for ice)
Magnet
Fig. 2
Model Shown: KM-901M_H/3
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E. Float Switch Check and Cleaning
FS is used to determine that there is sufficient water in the water tank after the 1-min.
fill cycle and after each harvest cycle. FS is also used to determine that the appropriate
volume of water has been converted into ice before switching out of the freeze cycle. No
adjustment is required.
1. Float Switch Check
To check FS, follow the steps below.
1) Turn off the power supply.
2) Remove the front panel, then move the control switch to the "OFF" position.
3) Remove the base cover, then disconnect one end of the pump tubing to drain the water
tank. See Fig. 3. After the water tank has drained, reconnect the pump tubing.
4) Remove the control box cover.
5) Disconnect FS connector from CB
Disconnect This
End of Pump
K5 connector.
Tubing to Drain
Water Tank
6) Check for continuity across FS leads. With
the water tank empty, FS should be open.
If open, continue to step 7. If closed, follow
the steps in "II.E.2. Float Switch Cleaning."
After cleaning FS, check it again. Replace if
necessary.
Base Cover
Fig. 3
7) Reconnect FS connector to CB K5
connector, then replace the control box
cover in its correct position.
8) Move the control switch to the "ICE" position. Replace the front panel in its correct
position, then turn on the power supply. After 1 min., the 1-min. fill cycle should end and
the initial harvest cycle should begin. If the initial harvest cycle begins, FS is good and
the check is complete. If the initial harvest cycle does not begin, continue to step 9.
9) Turn off the power supply.
10) Remove the front panel. Move the control switch to the "OFF" position.
11) Remove the control box cover.
12) Disconnect FS connector from CB K5 connector.
13) Check for continuity across FS leads. With the water tank full, FS should be closed.
If FS is closed and the icemaker will not switch from the 1-min. fill cycle to the initial
harvest cycle, replace CB.
If FS is open, confirm that the water tank is full. If the water tank is not full, check the
water supply, water filters, and inlet water valve. If the water tank is full, follow the
steps in "II.E.2. Float Switch Cleaning." After cleaning FS, check it again. Replace if
necessary.
Legend: CB–control board; FS–float switch
34
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2. Float Switch Cleaning
Depending on local water conditions, scale may build up on FS. Scale on the switch can
cause the float to stick. In this case, FS should be cleaned.
1) Turn off the power supply.
2) Remove the front panel, then move the control switch to the "OFF" position.
3) Remove the base cover, then disconnect one end of the pump tubing to drain the water
tank. See Fig. 3. After the water tank has drained, reconnect the pump tubing.
4) Disconnect the vent tube and the flush tube from the top of FS, then remove FS
assembly and remove the rubber boot from the bottom of FS assembly. See Fig. 4.
5) Remove the retainer rod from the bottom of FS housing, then remove the float. Be
careful not to bend the retainer rod excessively when removing it.
6) Wipe down FS housing, shaft, float, and retainer rod with a mixture of 1 part Hoshizaki
"Scale Away" and 25 parts warm water. Clean the inside of the rubber boot and hose
with cleaning solution. Rinse the parts thoroughly with clean water.
7) Reassemble FS assembly and replace it and the rubber boot in their correct positions.
Reconnect the vent tube and the flush tube.
8) Replace the base cover in its correct position.
9) Move the control switch to the "ICE" position.
10) Replace the front panel in its correct position.
11) Turn on the power supply to start the automatic icemaking process.
Legend: CB–control board; FS–float switch
Vent
Flush
Shaft
Float Switch
Housing
Float
Retainer Rod
Rubber Boot
and Hose
Fig. 4
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F.Thermistor Check
To check thermistor resistance, follow the steps below.
1) Turn off the power supply.
2) Remove the front panel. Move the control switch to the "OFF" position.
3) Remove the control box cover.
4) Remove the thermistor from the refrigerant tubing.
5) Immerse the thermistor sensor portion in a glass containing ice and water for 2 or
3 min.
6) Disconnect the thermistor connector from CB K3 connector and check the resistance
between thermistor leads. Normal range is 4.7 to 6.2 kΩ. If outside the normal range,
replace the thermistor. See "IV.B. Component Service Information." If within the normal
range, continue to the next step.
7) Replace the thermistor in its correct position. See "IV.B. Component Service
Information."
8) Reconnect the thermistor connector to CB K3 connector.
9) Replace the control box cover in its correct position.
10) Move the control switch to the "ICE" position.
11) Replace the front panel in its correct position.
12) Turn on the power supply.
13) Once the harvest cycle starts (Comp energizes), begin timing the harvest cycle.
14) The harvest timer and harvest cycle should terminate within 2 to 5 min. If the harvest
cycle does not terminate within 2 to 5 min., replace CB.
Legend: CB–control board; Comp–compressor
36
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G. Diagnostic Tables
1. No Ice Production
No Ice Production - Possible Cause
1. Power Supply
a) Off, blown fuse, or tripped breaker.
b) Not within specifications.
2. Main Transformer
a) Voltage tap switch not set to proper voltage.
b) Coil winding open or shorted.
(3 phase and KM-650MWH-M
only) (208/230VAC/115VAC)
3. Fuse (Control Box)
a) Blown.
4. Thermostatic Bin Control
See "II.D. Bin Control Check"
a) Tripped with bin filled with ice.
b) Ambient temperature too cool.
c) Set too warm.
d) Bulb out of position.
e) Open contacts, defective.
a) In "OFF" or "WASH" position.
b) Bad contacts.
5. Control Switch
6. High-Pressure Switch
a) Dirty condenser.
b) Fan motor not operating.
c) Refrigerant overcharged.
d) Bad contacts.
e) Refrigerant lines or components plugged.
a) Coil winding open or shorted.
7. Control Transformer
(115VAC/10.5VAC)
8. Control Board
a) In alarm.
See "II.C. Control Board Check"
b) Yellow "BC OPEN" LED on (bin full) ("G" control board).
c) Defective.
9. Mechanical Bin Control
a) Tripped with bin filled with ice.
b) Actuator does not move freely.
c) Defective.
See "II.D. Bin Control Check"
10. Water Supply
a) Water supply off or improper water pressure.
b) External water filters clogged.
a) Screen or orifice clogged.
b) Coil winding open.
11. Inlet Water Valve
c) Water valve open in freeze cycle.
a) Float does not move freely.
b) Defective.
12. Float Switch
See "II.E. Float Switch Check
and Cleaning"
13. Compressor
a) Compressor relay/magnetic contactor contacts bad or coil winding
open.
b) Start capacitor or run capacitor defective (single phase).
c) Internal protector open.
d) Start relay contacts bad or coil winding open (single phase).
e) Compressor defective.
14. Hot Gas Valve
a) Closed in harvest cycle.
b) Open in freeze cycle.
37
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No Ice Production - Possible Cause
15. Thermistor
a) Loose, disconnected, or defective.
See "II.F. Thermistor Check"
16. Pump Motor
a) Motor winding open.
b) Bearing worn out or locked rotor.
c) Defective capacitor.
d) Mechanical seal worn out.
a) Bulb loose.
17. Thermostatic Expansion Valve
18. Liquid Line Valve
b) Operating erratically.
a) Closed in freeze cycle.
b) Open in harvest cycle.
a) Motor winding open.
19. Fan Motor
b) Bearing worn out or locked rotor.
c) Defective capacitor.
20. Water System
a) Water leaks causing short freeze time.
2. Freeze-Up
Defrost and clean the icemaker prior to diagnosing freeze-up. Fill out a freeze-up checklist.
See the Hoshizaki America Technician's Pocket Guide or contact your local distributor for a
copy of the freeze-up checklist.
Freeze-Up - Possible Cause
Harvest Cycle
1. Evaporator
a) Scaled up.
b) Damaged.
2. Cube Guides
a) Out of position.
b) Damaged.
3. Spray Tubes and/or Spray
Guides
a) Dirty.
b) Out of position.
a) Low water pressure.
b) External water filters clogged.
4. Water Supply
c) Insufficient water line size.
Minimum 1/4" Nominal ID (6 mm Nominal OD in the EU) copper
water tubing or equivalent.
5. Inlet Water Valve
a) Screen or orifice clogged.
b) Defective.
6. Float Switch
a) Dirty, sticking.
b) Defective.
See "II.E. Float Switch Check
and Cleaning"
7. Refrigerant Charge
a) Low.
8. Control Board
a) Harvest timer (S4 dip switch 1 & 2) set too short.
See "III.C. Settings and
Adjustments" and "II.C. Control
Board Check"
b) Harvest pump timer (S4 dip switch 7) not in factory default position
("G" control board).
c) Defective.
9. Bin Control
a) Actuator does not move freely.
See "II.D. Bin Control Check"
10. Thermistor
a) Loose, disconnected, or defective.
See "II.F. Thermistor Check"
38
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Freeze-Up - Possible Cause
11. Thermostatic Expansion Valve
12. Hot Gas Valve
a) Defective.
a) Closed or restricted.
13. Liquid Line Valve
a) Open.
Freeze Cycle
1. Evaporator
a) Scaled up.
b) Damaged.
2. Spray Tubes and/or Spray
Guides
a) Dirty.
b) Out of position.
3. Refrigerant Charge
a) Low.
4. Control Board
a) Freeze timer (S4 dip switch 9 & 10) set incorrectly.
b) Defective.
See "II.C. Control Board Check"
5. Inlet Water Valve
a) Leaking by.
6. Float Switch
a) Float does not move freely.
b) Defective.
See "II.E. Float Switch Check
and Cleaning"
7. Pump Motor
a) RPM too slow.
b) Impeller damaged.
a) Bulb loose or defective.
a) Restricted.
8. Thermostatic Expansion Valve
9. Liquid Line Valve
10. Headmaster (C.P.R.)
(remote models)
a) Not bypassing.
3. Low Ice Production
Low Ice Production - Possible Cause
Long Harvest Cycle
a) Scaled up.
1. Evaporator
2. Spray Tubes and/or Spray
Guides
a) Dirty.
b) Out of position.
a) Low.
3. Refrigerant Charge
4. Water Supply
a) Low water pressure.
b) External water filters clogged.
c) Insufficient water line size.
Minimum 1/4" Nominal ID (6 mm Nominal OD in the EU) water
tubing or equivalent.
d) Too cold.
5. Control Board
a) Thermistor connection loose (K3).
b) Defective.
See "II.C. Control Board Check"
6. Thermistor
a) Loose, disconnected, or defective.
See "II.F. Thermistor Check"
7. Hot Gas Valve
a) Erratic or closed.
a) Screen or orifice clogged.
a) Inefficient or off.
a) Erratic or open.
a) Defective.
8. Inlet Water Valve
9. Compressor
10. Liquid Line Valve
11. Thermostatic Expansion Valve
39
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Low Ice Production - Possible Cause
Long Freeze Cycle
a) Scaled up, dirty.
a) Scaled up, dirty.
1. Evaporator
2. Float Switch
See "II.E. Float Switch Check
and Cleaning"
b) Float sticking.
c) Defective switch.
a) Leaking by.
3. Inlet Water Valve
4. Hot Gas Valve
5. Condenser
a) Erratic or open.
a) Clogged.
6. Control Board
a) Float switch connection loose (K5).
b) Defective.
See "II.C. Control Board Check"
7. Refrigerant Charge
a) Low.
8. Thermostatic Expansion Valve
a) Bulb loose.
b) Defective.
9. Compressor
10. Pump Motor
11. Liquid Line Valve
a) Inefficient or off.
a) RPM too slow.
a) Erratic or restricted.
a) Not bypassing.
12. Headmaster (C.P.R.)
(remote models)
40
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III. Controls and Adjustments
• A Hoshizaki exclusive control board is employed in KM series appliances.
• All models are pretested and factory adjusted.
• For a control board check procedure, see "II.C. Control Board Check."
NOTICE
• Fragile, handle very carefully.
• The control board contains integrated circuits, which are susceptible to failure
due to static discharge. It is especially important to touch the metal part of the
icemaker when handling or replacing the control board.
• Do not touch the electronic devices on the control board or the back of the control
board.
• Do not change wiring and connections. Do not misconnect K3 WHITE, K4 RED,
and K5 BLACK, because the same connector is used for the thermistor,
mechanical bin control, and float switch. K4 RED is not used on "E" control board
models.
• Do not short out power supply to test for voltage.
• Always replace the whole control board assembly if it goes bad.
41
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A. Control Board Layout
1. "E" Control Board
"E" Control Board
• "OUTPUT TEST" Button
(used to test relays on control board)
• "ALARM RESET" Button
• S4 Dip Switch
• Freeze Timer
LED (yellow)
• K3 (white) Connector
Thermistor
(harvest control and
high temperature safety)
• Harvest Backup
Timer LED (orange)
• K4 (red) Connector
Open
• Alarm Buzzer
• Part Number
• POWER OK LED
(red) (lights when
10.5VAC is supplied
to K2 connector)
• K5 (black) Connector
Float Switch
(water level)
Microprocessor
• Relay LEDs
(control board revision
level indicated on label
on side of relay)
(4) (indicate which
relays are energized
and which K1
connector pins are
energized
• K1 Connector
Pins #1 through #10
#1, 9 Magnetic Contactor or
Compressor Relay
#2 Hot Gas Valve
#3 Fan Motor
• LED 2 (X2 Relay)
LED 2 on:
K1 Connector Pin #2
LED 2 off:
K1 Connector Pin #3
Liquid Line Valve
• LED 3 (X3 Relay)
LED 3 on:
K1 Connector Pin #5
LED 3 off:
K1 Connector Pin #4
(energized in freeze)
#4 Pump Motor (icemaking)
#5 Pump Motor (pump-out)
#6 Inlet Water Valve
#7, 10 Component Power
Supply
#8 Open
• LED 4 (X4 Relay)
K1 Connector Pin #6
Switch for "C" control board
and "ALPINE" control board
(service control board only)
Set to "ALP" for appliances
covered in this manual.
• LED 1 (X1 Relay)
K1 Connector Pin #1, #9
• K2 Connector
Control Transformer
(10.5VAC)
"E" Control Board
Part Number 2A1410-02
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2. "G" Control Board
"G" Control Board
• Bin Control Switch
Closed LED (green)
• "OUTPUT TEST" Button
(used to test relays on control board)
• S4 Dip Switch
• "ALARM RESET" Button
(on continuously
in thermostatic bin
control application)
• Bin Control Switch
Open LED (yellow)
(mechanical bin
• K3 (white) Connector
Thermistor
(harvest control and
high temperature safety)
control application only)
• Part Number
• Alarm Buzzer
• K4 (red) Connector
Mechanical Bin Control or
K4 Jumper (thermostatic
bin control application)
• S5 Dip Switch
• POWER OK LED
(red) (lights when
10.5VAC is supplied
to K2 connector)
• K5 (black) Connector
Float Switch
(water level)
• Relay LEDs
Label
(4) (indicate which
relays are energized
and which K1
connector pins are
energized
(control board revision
level indicated on label
on side of relay)
• K1 Connector
• LED 2 (X2 Relay)
LED 2 on:
K1 Connector Pin #2
LED 2 off:
Pins #1 through #10
#1, 9 Magnetic Contactor or
Compressor Relay
#2 Hot Gas Valve
#3 Fan Motor
K1 Connector Pin #3
Liquid Line Valve
#4 Pump Motor (icemaking)
#5 Pump Motor
(harvest pump timer and
pump-out)
#6 Inlet Water Valve
#7, 10 Component Power
Supply
• LED 3 (X3 Relay)
LED 3 on:
K1 Connector Pin #5
LED 3 off:
K1 Connector Pin #4
(energized in freeze)
• LED 4 (X4 Relay)
K1 Connector Pin #6
#8 Open
• LED 1 (X1 Relay)
K1 Connector Pin #1, #9
• K2 Connector
Control Transformer
(10.5VAC)
"G" Control Board
Part Number 2A3792-01
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B. LED Lights and Audible Alarm Safeties
1. "E" Control Board
At startup, a 5-second delay occurs while the control board conducts an internal timer
check. A beep occurs when power is turned off. The red "POWER OK" LED indicates
proper control voltage and remains on unless a control voltage problem occurs. The
green LEDs 1 through 4 energize and sequence from initial startup as listed in the
table below. Note that the order of the LEDs from the outer edge of the control board
is 1, 4, 3, 2.
Time LEDs are On
Max.
Energized
Components
Sequence Step
LED
Min.
Avg.
1-Minute Fill Cycle 4
WV
1 minute
Harvest Cycle
Freeze Cycle
1, 4, 2
1
Comp, FMR, HGV, WV
Comp, FM/FMR, PM,
LLV
2 minutes 20 minutes 3 to 5 minutes
5 minutes freeze timer 30 to 35 minutes
setting
Pump-Out Cycle 1, 4*, 3, 2
Comp, FMR, HGV, PM,
WV*
10 seconds 20 seconds *pump-out timer
setting
The built in safeties shut down the icemaker and have alarms as listed below.
No. of Beeps
(every 3 sec.)
Type of Alarm
Notes
1
High Evaporator Temp.
(temperature > 127°F) (53°C)
Check for harvest problem (stuck HGV or relay), hot
water entering icemaker, or shorted thermistor.
2
3
Harvest Backup Timer
(harvest > 20 min. for two cycles Check for open thermistor, HGV not opening, TXV or
in a row)
Orange "H TIMER" LED on.
LLV leaking by, low charge, or inefficient Comp, or WRV
leaking by.
Yellow "F TIMER" LED on.
Freeze Timer
(freeze > specified setting for
two cycles in a row)
Check for FS stuck closed (up), WV leaking by, HGV
leaking by, PM not pumping, TXV not feeding properly,
LLV not opening, low charge, HM not bypassing, or
inefficient Comp.
To reset the above safeties, press the "ALARM RESET" button with the power supply on.
6
Low Voltage
(92Vac 5% or less)
High Voltage
Red LED turns off if voltage protection operates.
The control voltage safeties automatically reset when
voltage is corrected.
7
(147Vac 5% or more)
Legend: Comp–compressor; FM–fan motor; FMR–fan motor remote; FS–float switch;
HGV–hot gas valve; HM–headmaster (C.P.R.); LLV–liquid line valve; PM–pump
motor; TXV–thermostatic expansion valve; WRV–water regulating valve;
WV–inlet water valve
44
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2. "G" Control Board
At startup, a 5-second delay occurs while the control board conducts an internal timer
check. A beep occurs when the control switch is moved to the "ICE" position. The red
"POWER OK" LED indicates proper control voltage and remains on unless a control
voltage problem occurs. The green LEDs 1 through 4 energize and sequence from
initial startup as listed in the table below. Note that the order of the LEDs from the
outer edge of the control board is 1, 4, 3, 2.
Time LEDs are On
Max.
Energized
Components
Sequence Step
LED
Min.
Avg.
1-Minute Fill Cycle
Harvest Cycle
Harvest Pump Timer
4
WV
1 minute
1, 4, 2
1, 3, 2
Comp, FMR, HGV, WV
Comp, FMR, HGV, PM
2 minutes 20 minutes 3 to 5 minutes
0 seconds 50 seconds harvest pump timer
setting
Freeze Cycle
1
Comp, FM/FMR, PM,
LLV
5 minutes freeze timer 30 to 35 minutes
setting
Pump-Out Cycle
1, 4*, 3, 2 Comp, FMR, HGV, PM,
WV*
10 seconds 20 seconds *pump-out timer
setting
The built-in safeties shut down the icemaker and have alarms as listed below.
No. of Beeps
(every 3 sec.)
Type of Alarm
Notes
1
High Evaporator Temp.
Check for harvest problem (stuck HGV or relay), hot
(temperature > 127°F) (53°C) water entering icemaker, or shorted thermistor.
2
3
Harvest Backup Timer
(harvest > 20 min. for two
cycles in a row)
Check for open thermistor, HGV not opening, TXV or
LLV leaking by, low charge, or inefficient Comp, or WRV
leaking by.
Freeze Timer
Check for FS stuck closed (up), WV leaking by, HGV
(freeze > freeze timer setting leaking by, PM not pumping, TXV not feeding properly,
for two cycles in a row)
LLV not opening, low charge, HM not bypassing, or
inefficient Comp.
To reset the above safeties, press the "ALARM RESET" button with the power supply on.
6
Low Voltage
(92Vac 5% or less)
High Voltage
Red LED turns off if voltage protection operates.
The control voltage safeties automatically reset when
voltage is corrected.
7
(147Vac 5% or more)
Legend: Comp–compressor; FM–fan motor; FMR–fan motor remote; FS–float switch;
HGV–hot gas valve; HM–headmaster (C.P.R.); LLV–liquid line valve; PM–pump
motor; TXV–thermostatic expansion valve; WRV–water regulating valve;
WV–inlet water valve
45
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C. Settings and Adjustments
NOTICE
Dip switches are factory set. Failure to maintain factory settings may adversely
affect performance and warranty coverage. For more information, contact your
Hoshizaki Service Center.
1. Default Dip Switch Settings
The dip switches are factory-adjusted to the following positions for both the "E" and "G"
control boards:
a) "E" and "G" Control Board without Harvest Pump Timer Operation
"E" Control Board S4 Dip Switch No.
KM-320MAH, KM-320MWH
1
2
3
4
5
6
7
8
9
10
OFF OFF OFF ON ON ON OFF OFF OFF OFF
OFF OFF OFF OFF OFF OFF OFF OFF ON OFF
OFF OFF OFF OFF ON ON OFF OFF OFF OFF
OFF OFF OFF OFF ON ON OFF OFF ON OFF
ON OFF ON OFF ON ON OFF OFF OFF ON
KM-515MAH, KM-515MWH, KM-515MRH
KM-600MAH, KM-650MAH, KM-650MWH
KM-650MRH
KM-901MAH, KM-901MWH, KM-901MRH/3
b) "G" Control Board with Harvest Pump Timer Operation
S4 Dip Switch No.
1
2
3
4
5
6
7
8
9
10
KM-515MAH
OFF OFF OFF OFF ON ON ON OFF ON OFF
ON OFF OFF OFF ON ON ON OFF OFF OFF
OFF OFF OFF OFF ON ON ON OFF OFF OFF
OFF OFF ON OFF ON ON ON OFF OFF ON
KM-650MAH, KM-650MRH
KM-650MWH(-M)
KM-901MAH
S5 Dip Switch (Do Not Adjust)
"G" Control Board
1
2
3
4
5
Dip Switch No.
All Models
OFF OFF OFF OFF OFF
S4 Dip Switch
"E" and "G" Control Boards
S5 Dip Switch
"G" Control Board Only
Do Not Adjust
Freeze Timer (9 & 10)
Factory Use (8)
Bin Control Selector (7) "E" Control Board
Harvest Pump Timer (7) "G" Control Board
Refill Counter
(2 through 5)
(Do Not Adjust)
Float Switch
Selector (1)
Pump-Out Frequency Control (5 & 6)
Pump-Out Timer (3 & 4)
Harvest Timer (1 & 2)
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2. Harvest Timer (S4 dip switch 1 & 2)
The harvest timer starts counting when the thermistor reaches 48°F (9°C) at the
evaporator outlet and the control board reads 3.9 kΩ from the thermistor. The harvest
timer is factory set, and generally no adjustment is required. However, a setting longer
than the factory setting may be advised in cases where the drain provided at harvest
needs to be prolonged for extra cleaning. Before changing this setting, contact Hoshizaki
Technical Support at 1-800-233-1940 for recommendations. Keep in mind that setting the
harvest timer to a longer setting decreases 24-hour production.
Note that the pump-out timer (S4 dip switch 3 & 4) acts in place of the harvest timer
during cycles with a pump out. For details, see "III.C.3. Pump-Out Timer (S4 dip switch
3 & 4)."
Note: On models with a pump-out every cycle, the harvest timer is only relevant during
the initial harvest cycle since a pump out occurs every cycle thereafter.
S4 Dip Switch Setting
Time
(sec.)
No. 1
OFF
ON
No. 2
OFF
OFF
ON
60
90
OFF
ON
120
180
ON
3. Pump-Out Timer (S4 dip switch 3 & 4)
NOTICE
• On KM-515M_H models without harvest pump timer operation, never
adjust the pump-out timer's harvest timer (T2) for a time less than
150 sec. Otherwise, the icemaker will not perform properly.
• On models with harvest pump timer, do not adjust 3 off and 4 on. Pump
does not run in pump-out rotation in this setting.
When a pump-out is called for, the pump motor stops for 2 sec., then energizes in the
reverse direction, taking water from the bottom of the water tank and forcing pressure
against the check valve seat allowing water to go through the check valve and down
the drain. At the same time, water flows through the small tube to power flush the float
switch. The pump motor drains the water tank for the time determined by the pump-out
timer. The pump-out timer also acts in place of the harvest timer during cycles with a
pump-out. The pump-out timer is factory set, and generally no adjustment is required.
However, where water quality is bad and the icemaker needs a longer pump-out time,
the pump-out timer can be adjusted. The pump-out timer control can be set to pump-out
for 10 or 20 sec.
S4 Dip Switch Setting
Time (sec.)
Inlet Water
Valve
No. 3
OFF
ON
No. 4
OFF
OFF
ON
T1
T2
10
10
10
20
150
180
120
180
Closed
Closed
Open
OFF
ON
ON
Closed
T1: Time to drain the water tank
T2: Harvest timer at pump out
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4. Pump-Out Frequency Control (S4 dip switch 5 & 6)
NOTICE
Do not adjust on KM-515M_H without harvest pump timer. Adjustments to this setting
on KM-515M_H without harvest pump timer may adversely affect performance and
warranty coverage.
The pump-out frequency control is factory set to drain the water tank every 10 cycles
on all KM-320M_H, KM-600MAH, KM-650M_H, KM-901M_H/3 and on KM-515MAH
with harvest pump timer, and every cycle on KM-515M_H without harvest pump timer.
Generally no adjustment is required. However, where water quality is bad and the
icemaker needs a pump-out more often, the pump-out frequency can be adjusted. The
pump-out frequency control can be set to have a pump-out occur every cycle, or every
2, 5, or 10 cycles.
Timing of the first pump-out is dependent on the control board. On "E" control boards, the
first pump-out is after the first freeze cycle. On "G" control boards, the first pump-out is
dependent on S4 dip switch 5 & 6. See the table below.
"E" & "G" Control Board
S4 Dip Switch Setting
1st Pump-Out
Pump-Out
"E" Control Board
After 1st freeze cycle
"G" Control Board
Frequency
No. 5
OFF
ON
No. 6
OFF
OFF
ON
Every cycle
Every 2 cycles
Every 5 cycles
Every 10 cycles
After 2nd freeze cycle
After 3rd freeze cycle
After 6th freeze cycle
After 11th freeze cycle
OFF
ON
ON
5. Bin Control Selector or Harvest Pump Timer Operation (S4 dip switch 7)
Depending on the control board, S4 dip switch 7 is used for either bin control selection or
harvest pump timer operation.
(1) Bin Control Selector, "E" Control Board
NOTICE
Do not adjust. This dip switch must be left in the factory default position or the
icemaker will not operate correctly.
When set to on position on an icemaker with a thermostatic bin control, a 5-beep alarm
sounds (open circuit) and the icemaker does not operate.
"E" Control Board
S4 Dip Switch Setting
Bin Control
No. 7
ON
Mechanical (requires resistor wire harness)
Thermostatic
OFF
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(2) Harvest Pump Timer, "G" Control Board
NOTICE
Factory set for proper operation. Do not adjust. Adjustment outside of the factory
default setting may result in damage to the appliance.
Depending on the harvest pump timer setting, the pump motor either stays off or is
energized the last 50 seconds of harvest. When the pump motor is energized, water
circulates over the evaporator. The harvest water valve is open during harvest for a
maximum of 6 minutes or the length of harvest minus 0 or 50 seconds (determined by
the harvest pump timer setting), whichever is shorter.
When S4 dip switch 7 is in the on position and harvest begins, X11 and X10 relays
energize. A latching circuit is created through the X11 and X10 relays. For further details,
see "VIII.C. Wiring Diagrams."
50 sec. before harvest termination, LED 4 turns off, inlet water valve and X11 relay
de-energize. X10 relay remains energized through the latching circuit. Next, LED 3 turns
on and control board K1 connector pin #5 (DBU wire) energizes, energizing the pump
motor for the last 50 sec. of harvest.
"G" Control Board
S4 Dip Switch Setting
Pump Motor
Time (sec.)
No. 7
ON
50
0
OFF
6. Factory Use (S4 dip switch 8)
Factory set for proper operation. Do not adjust. This must be left in the factory default
position.
7. Freeze Timer (S4 dip switch 9 & 10)
NOTICE
Adjust to proper specification, or the icemaker may not operate correctly.
The freeze timer setting determines the maximum allowed freeze time to prevent possible
freeze-up issues. Upon termination of the freeze timer, the control board initiates the
harvest cycle or pump-out cycle. After 2 consecutive freeze timer terminations, the
control board shuts down the icemaker. In this case, see "II.G.3. Low Ice Production"
for possible solutions. The freeze timer is factory set and no adjustment is required.
Before changing this setting, contact Hoshizaki Technical Support at 1-800-233-1940 for
recommendations.
S4 Dip Switch Setting
Time
(min.)
No. 9
OFF
OFF
ON
No. 10
OFF
ON
60
50
70
75
OFF
ON
ON
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8. Float Switch Selector (S5 dip switch 1): "G" Control Board
NOTICE
Do not adjust. This must be left in the factory default position or the icemaker will
not operate correctly.
9. Refill Counter (S5 dip switch 2 through 5): "G" Control Board
NOTICE
Do not adjust. These must be left in the factory default position or the icemaker will
not operate correctly.
D. Control Switch
The control switch has three positions: "OFF" for power off, "ICE" for icemaking, and
"WASH" to energize the pump motor when cleaning and sanitizing.
50
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IV. Refrigeration Circuit and Component Service Information
WARNING
• This appliance should be diagnosed and repaired only by qualified service
personnel to reduce the risk of death, electric shock, serious injury, or fire.
• Move the control switch to the "OFF" position and turn off the power supply. Place
the disconnect in the "OFF" position. Lockout/Tagout to prevent the power supply
from being turned back on inadvertently.
• CHOKING HAZARD: Ensure all components, fasteners, and thumbscrews are
securely in place after the icemaker is serviced. Make sure that none have fallen
into the dispenser unit/ice storage bin.
• Make sure all food zones in the icemaker and dispenser unit/ice storage bin are
clean after service.
A. Refrigeration Circuit Service Information
WARNING
• Repairs requiring the refrigeration circuit to be opened must be performed by
properly trained and EPA-certified service personnel.
• Use an electronic leak detector or soap bubbles to check for leaks. Add a trace of
refrigerant to the system (if using an electronic leak detector), and then raise the
pressure using nitrogen gas (140 PSIG). Do not use R-404A as a mixture with
pressurized air for leak testing.
NOTICE
• Always recover the refrigerant and store it in an approved container. Do not
discharge the refrigerant into the atmosphere.
• Do not leave the system open for longer than 15 min. when replacing or servicing
parts. The Polyol Ester (POE) oils used in R-404A applications can absorb
moisture quickly. Therefore it is important to prevent moisture from entering the
system when replacing or servicing parts.
• Always install a new drier every time the sealed refrigeration system is opened.
Do not replace the drier until after all other repair or replacement has been made.
Install the new drier with the arrow on the drier in the direction of the refrigerant
flow.
• When brazing, protect the drier by using a wet cloth to prevent the drier from
overheating. Do not allow the drier to exceed 250°F (121°C).
1. Refrigerant Recovery
The icemaker is provided with refrigerant access valves. Using proper refrigerant practices,
recover the refrigerant. Store the refrigerant in an approved container. Do not discharge the
refrigerant into the atmosphere.
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2. Brazing
WARNING
• R-404A itself is not flammable at atmospheric pressure and temperatures up to
176°F (80°C).
• R-404A itself is not explosive or poisonous. However, when exposed to high
temperatures (open flames), R-404A can be decomposed to form hydrofluoric
acid and carbonyl fluoride both of which are hazardous.
• Do not use silver alloy or copper alloy containing arsenic.
1) Braze all fittings while purging with nitrogen gas flowing at a pressure of 3 to 4 PSIG.
Note: Because the pipes in the evaporator case are specially coated to resist corrosion,
it is important to make connections outside the evaporator case when possible. If
it is necessary to braze inside the evaporator case, use sandpaper to remove the
coating from the brazing connections before unbrazing the components.
NOTICE
• Always install a new drier every time the sealed refrigeration system is opened.
• Do not replace the drier until after all other repair or replacement has been made.
Install the new drier with the arrow on the drier in the direction of the refrigerant
flow.
• When brazing, protect the drier by using a wet cloth to prevent the drier from
overheating. Do not allow the drier to exceed 250°F (121°C).
2) Use an electronic leak detector or soap bubbles to check for leaks. Add a trace of
refrigerant to the system (if using an electronic leak detector), and then raise the
pressure using nitrogen gas (140 PSIG). Do not use R-404A as a mixture with
pressurized air for leak testing.
3. Evacuation and Recharge (R-404A)
1) Attach a vacuum pump to the system. Be sure to connect the charging hoses to both
high and low-side refrigerant access valves.
IMPORTANT
The vacuum level and vacuum pump may be the same as those for current
refrigerants. However, the rubber hose and gauge manifold to be used for
evacuation and refrigerant charge should be exclusively for POE oils.
2) Turn on the vacuum pump. Open the gauge manifold valves. Never allow the oil in the
vacuum pump to flow backwards.
3) Allow the vacuum pump to pull down to a 29.9" Hg vacuum. Evacuating period depends
on pump capacity.
4) Close the low-side valve and high-side valve on the gauge manifold.
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5) Disconnect the gauge manifold hose from the vacuum pump and attach it to a
refrigerant service cylinder. Remember to loosen the connection and purge the air from
the hose. For the required refrigerant charge, see the rating label inside the icemaker.
Hoshizaki recommends only virgin refrigerant or reclaimed refrigerant which meets
ARI Standard 700 (latest edition) be used.
6) A liquid charge is required when charging an R-404A system (to prevent fractionation).
Place the service cylinder on the scales; if the service cylinder is not equipped with
a dip tube, invert the service cylinder, then place it on the scales. Open the high-side
valve on the gauge manifold.
7) Allow the system to charge with liquid until the proper charge weight is met.
8) If necessary, add any remaining charge to the system through the low-side.
NOTICE! To prevent compressor damage, use a throttling valve or liquid
dispensing device to add the remaining liquid charge through the low-side
refrigerant access valve with the icemaker running.
9) Close the high and low-side gauge manifold valves, then disconnect the gauge manifold
hoses.
10) Cap the refrigerant access valves to prevent a possible leak.
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B. Component Service Information
NOTICE
When replacing a component listed below, see the notes to help ensure proper
operation.
Component
Notes
Compressor
1 phase: Install a new start capacitor, run capacitor, and start relay.
3 phase: Install a new magnetic contactor.
Thermostatic
• Attach the thermostatic expansion valve bulb to the suction line in the same location as
Expansion Valves the previous bulb.
• The bulb should be between the 10 and 2 o'clock positions on the tube.
• Secure the bulb with the clamp and holder, then insulate it.
• Replace the strainer if applicable.
Hot Gas Valves
Liquid Line
Valves
• Use copper tube of the same diameter and length when replacing valve lines.
Fan Motors
Pump Motor
Thermistor
Install a new capacitor.
Install a new capacitor.
• Attach the new thermistor to the suction line in the same location as the previous
thermistor.
• The thermistor should be at the 12 o'clock position on the tube.
• Smoothly fill the recessed area of the thermistor holder with high thermal conductive
type sealant. Hoshizaki America part number 4A0683-01 (Silicone Heat Sink Compound
10-8108 manufactured by GC Electronics), KE-4560 RTV (manufactured by ShinEtsu
Silicones), or equivalent are recommended.
• Secure the thermistor with the holder, then insulate it.
• Be very careful to prevent damage to the leads.
KM-650MWH-M Tighten the water regulating valve flare nut to a torque of 39.8 ft-lb/53.9 N·m.
Water Regulating
Valve
C. Water Regulating Valve Adjustment (water-cooled model)
The water regulating valve is factory set, and generally no adjustment is required. However,
when necessary, adjust the water regulator using the following procedure.
1) Prepare a thermometer to check the condenser drain temperature. Attach a pressure
gauge to the high-side line of the system.
Adjustment Screw
2) 5 min. after a freeze cycle starts, confirm
that the thermometer reads 104°F to 115°F
(40°C to 46°C). If it does not, rotate the
CW – Higher
adjustment screw by using a flat blade
screwdriver until the temperature is in the
proper range. See Fig. 5. Next, check that
the reference pressure is in the range
indicated in the Head Pressure table in the
Performance Data section. If it is not in the
proper range, verify the refrigerant charge.
CCW – Lower
Top View
Fig. 5
3) Check that the condenser drain temperature is stable.
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V. Maintenance
The maintenance schedule below is a guideline. More frequent maintenance may be
required depending on water quality, the appliance's environment, and local sanitation
regulations
WARNING
• Only qualified service technicians should service the appliance.
• To reduce the risk of electric shock, do not touch the control switch or service
switch with damp hands
• Before servicing: Move the control switch to the "OFF" position and turn off the
power supply. Place the disconnect in the "OFF" position.
Lockout/Tagout to prevent the power supply from being turned back on
inadvertently.
• CHOKING HAZARD: Ensure all components, fasteners, and thumbscrews are
securely in place after any maintenance is done to the icemaker. Make sure that
none have fallen into the dispenser unit/ice storage bin.
Maintenance Schedule
Frequency Area
Daily Scoop
Task
Clean the ice scoop using a neutral cleaner. Rinse thoroughly after
cleaning.
Bi-Weekly Air Filters
Monthly External Water
Filters
Inspect. Wash with warm water and neutral cleaner if dirty.
Check for proper pressure and change if necessary.
Icemaker Exterior Wipe down with a clean, soft cloth. Use a damp cloth containing a
neutral cleaner to wipe off oil or dirt build up. Clean any chlorine staining
(rust colored spots) using a non-abrasive cleanser.
Underside of
Icemaker and Top
Kits; Bin Door and
Snout
Wipe down with a clean cloth and warm water.
Yearly
Icemaker and
Clean and sanitize per the cleaning and sanitizing instructions provided
Dispenser Unit/Ice in the instruction manual or maintenance label on the icemaker.
Storage Bin Liner
Water Supply Inlet Close the icemaker water supply line shut-off valve and drain the water
system. Clean the water supply inlet screen.
Condenser
Inspect. Clean if necessary by using a brush or vacuum cleaner. More
frequent cleaning may be required depending on location.
Water Hoses
Inspect the water hoses and clean/replace if necessary.
As Needed Marine Model
Condenser
If contaminated seawater enters the system, flush with clean seawater or
fresh water as soon as possible to minimize damage to the condenser.
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VI. Preparing the Appliance for Periods of Non-Use
NOTICE
• When storing the appliance for an extended time or in sub-freezing temperatures,
follow the instructions below to prevent damage.
• To prevent damage to the water pump, do not operate the appliance with the
control switch in the "WASH" position when the water tank is empty.
When the appliance is not used for two or three days under normal conditions, it is
sufficient to move the control switch to the "OFF" position. When storing the appliance for
an extended time or in sub-freezing temperatures, follow the instructions below.
1. Remove the water from the icemaker water line:
1) Turn off the power supply, then remove the front panel.
2) Close the icemaker water supply line shut-off valve and open the icemaker water supply
line drain valve.
3) Allow the line to drain by gravity.
4) Attach a compressed air or carbon dioxide supply to the icemaker water supply line
drain valve.
5) Make sure at least 3 min. have elapsed since you turned off the power supply. Make
sure the control switch is in the "ICE" position. Replace the front panel in its correct
position, then turn on the power supply.
6) Blow the icemaker water supply line out using the compressed air or carbon dioxide
supply.
7) Close the icemaker water supply line drain valve.
2. Remove the water from the water tank:
1) Turn off the power supply, then remove the front panel.
2) Move the control switch to the "OFF" position.
3) Remove the base cover, then disconnect one end of the pump tubing to drain the water
tank. See Fig. 6. After the water tank has drained, reconnect the pump tubing.
4) Replace the base cover and the front panel in their correct positions.
5) Remove all ice from the dispensing unit/ice storage bin. Clean the storage bin liner
using a neutral cleaner. Rinse thoroughly after cleaning.
Disconnect This
End of Pump
Tubing to Drain
Water Tank
Base Cover
Fig. 6
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3. On water-cooled model, remove the water from the water-cooled condenser:
1) Make sure the power supply is off, then remove the front panel and right side panel.
2) Close the condenser water supply line shut-off valve. If connected to a closed loop
system, also close the condenser return line shut-off valve.
3) Open the condenser water supply line drain valve. If connected to a closed loop system,
also open the condenser return line drain valve.
4) Attach a compressed air or carbon dioxide supply to the condenser water supply line
drain valve.
5) Open the water regulating valve by using a screwdriver to pry up on the spring retainer
underneath the spring. While holding the valve open, blow out the condenser using the
compressed air or carbon dioxide supply until water stops coming out.
6) Close the drain valve(s).
7) Replace the right side panel and front panel in their correct positions.
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VII. Disposal
The appliance contains refrigerant and must be disposed of in accordance with
applicable national, state, and local codes and regulations. Refrigerant must be
recovered by properly certified service personnel.
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VIII.Technical Information
A. Specification Sheets
1. KM-320MAH
AC SUPPLY VOLTAGE
AMPERAGE
115/60/1
9.7 A (5 Min. Freeze AT 104°F/WT 80°F)
MINIMUM CIRCUIT AMPACITY
MAXIMUM FUSE SIZE
APPROXIMATE ICE PRODUCTION
PER 24 HR.
20 A
20 A
Ambient
WATER TEMP. (°F)
Temp.(°F)
50
70
90
lbs./day ( kg/day )
Reference without *marks
70
80
90
100
*325 (147)
315 (143)
311 (141)
304 (138)
311 (141)
293 (133)
*278 (126)
272 (123)
287 (130)
265 (120)
251 (114)
226 (103)
SHAPE OF ICE
Crescent Cube
ICE PRODUCTION PER CYCLE
APPROXIMATE STORAGE CAPACITY
ELECTRIC & WATER CONSUMPTION
ELECTRIC W (kWH/100 lbs.)
WATER gal./24HR (gal./100 lbs.)
EXTERIOR DIMENSIONS (WxDxH)
EXTERIOR FINISH
7.2 lbs. (3.3 kg) 360 pcs.
N/A
90/70°F
800(6.9)
51(18.4)
70/50°F
750(5.5)
117(35.9)
22" x 27-3/8" x 30-5/16" (560 x 695 x 770 mm)
Stainless Steel, Galvanized Steel (Rear)
Net 123 lbs. (56 kg), Shipping 153 lbs. (70 kg)
Permanent-Connection
WEIGHT
CONNECTIONS - ELECTRIC
- WATER SUPPLY
Inlet
1/2" FPT
- DRAIN
Outlet
3/4" FPT
3/8" OD Tube
CUBE CONTROL SYSTEM
HARVESTING CONTROL SYSTEM
ICE MAKING WATER CONTROL
COOLING WATER CONTROL
BIN CONTROL SYSTEM
COMPRESSOR
Float Switch
Hot Gas and Water, Thermistor and Timer
Timer Controlled. Overflow Pipe
N/A
Thermostatic or Mechanical Bin Control
Hermetic, Model ASE32C3E-CAA
Air-Cooled, Fin and Tube Type
Vertical Type, Stainless Steel and Copper
Thermostatic Expansion Valve
R-404A, 1 lb. 4.3 oz. (575g)
High 467PSIG, Low 210PSIG
High Voltage Cut-Out (Internal)
Auto-Reset Overload Protector (Internal)
Auto-Reset High Pressure Control Switch
Float Switch
CONDENSER
EVAPORATOR
REFRIGERANT CONTROL
REFRIGERANT CHARGE
DESIGN PRESSURE
P.C. BOARD CIRCUIT PROTECTION
COMPRESSOR PROTECTION
REFRIGERANT CIRCUIT PROTECTION
LOW WATER PROTECTION
ACCESSORIES -SUPPLIED
-REQUIRED
N/A
Ice Storage Bin
OPERATING CONDITIONS
VOLTAGE RANGE
AMBIENT TEMP.
104 - 127 V
45 -100° F
WATER SUPPLY TEMP.
WATER SUPPLY PRESSURE
45 - 90° F
10 - 113 PSIG
Note: We reserve the right to make changes in specifications and design without prior
notice.
59
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2. KM-320MWH
AC SUPPLY VOLTAGE
AMPERAGE
115/60/1
8.2 A (5 Min. Freeze AT 104°F / WT 80°F)
MINIMUM CIRCUIT AMPACITY
MAXIMUM FUSE SIZE
APPROXIMATE ICE PRODUCTION
PER 24 HR.
20 A
20 A
Ambient
WATER TEMP. (°F)
Temp.(°F)
50
70
90
lbs./day ( kg/day )
Reference without *marks
70
80
90
100
*352 (160)
349 (158)
348 (158)
337 (153)
348 (158)
342 (155)
*337 (153)
330 (150)
324 (147)
309 (140)
308 (140)
281 (127)
SHAPE OF ICE
Crescent Cube
ICE PRODUCTION PER CYCLE
APPROXIMATE STORAGE CAPACITY
ELECTRIC & WATER CONSUMPTION
ELECTRIC W (kWH/100 lbs.)
WATER gal./24HR (gal./100 lbs.)
WATER COOLED CONDENSER
gal./24HR (gal./100 lbs.)
7.2 lbs. (3.3 kg) 360 pcs.
N/A
90/70°F
730(5.2)
57(16.8)
528(157)
70/50°F
730(5.0)
103(29.4)
327(93)
EXTERIOR DIMENSIONS (WxDxH)
EXTERIOR FINISH
WEIGHT
CONNECTIONS - ELECTRIC
- WATER SUPPLY
22" x 27-3/8" x 30-5/16" (560 x 695 x 770 mm)
Stainless Steel, Galvanized Steel (Rear)
Net 123 lbs. (56 kg), Shipping 153 lbs. (70 kg)
Permanent-Connection
Inlet
1/2" FPT
- DRAIN
Outlet
3/4" FPT
3/8" OD Tube
CUBE CONTROL SYSTEM
HARVESTING CONTROL SYSTEM
ICE MAKING WATER CONTROL
COOLING WATER CONTROL
BIN CONTROL SYSTEM
COMPRESSOR
Float Switch
Hot Gas and Water, Thermistor and Timer
Timer Controlled. Overflow Pipe
Pressure Regulator
Thermostatic or Mechanical Bin Control
Hermetic, Model ASE32C3E-CAA
Water-Cooled, Tube in Tube Type
Vertical Type, Stainless Steel and Copper
Thermostatic Expansion Valve
R-404A, 1 lb. 0.8 oz. (486g)
High 427PSIG, Low 210PSIG
High Voltage Cut-Out (Internal)
Auto-Reset Overload Protector (Internal)
Auto-Reset High Pressure Control Switch
Float Switch
CONDENSER
EVAPORATOR
REFRIGERANT CONTROL
REFRIGERANT CHARGE
DESIGN PRESSURE
P.C. BOARD CIRCUIT PROTECTION
COMPRESSOR PROTECTION
REFRIGERANT CIRCUIT PROTECTION
LOW WATER PROTECTION
ACCESSORIES -SUPPLIED
-REQUIRED
N/A
Ice Storage Bin
OPERATING CONDITIONS
VOLTAGE RANGE
AMBIENT TEMP.
104 - 127 V
45 -100° F
WATER SUPPLY TEMP.
WATER SUPPLY PRESSURE
45 - 90° F
10 - 113 PSIG
Note: We reserve the right to make changes in specifications and design without prior
notice.
60
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3. KM-515MAH
AC SUPPLY VOLTAGE
AMPERAGE
115/60/1
11.7 A (5 Min. Freeze AT 104°F/WT 80°F)
MINIMUM CIRCUIT AMPACITY
MAXIMUM FUSE SIZE
APPROXIMATE ICE PRODUCTION
PER 24 HR.
20 A
20 A
Ambient
WATER TEMP. (°F)
Temp.(°F)
50
70
90
lbs./day ( kg/day )
Reference without *marks
70
80
90
100
*501 (227)
486 (221)
482 (218)
472 (214)
482 (218)
456 (207)
*435 (197)
426 (193)
447 (203)
416 (189)
396 (180)
361 (164)
SHAPE OF ICE
Crescent Cube
ICE PRODUCTION PER CYCLE
APPROXIMATE STORAGE CAPACITY
ELECTRIC & WATER CONSUMPTION
ELECTRIC W (kWH/100 lbs.)
WATER gal./24HR (gal./100 lbs.)
EXTERIOR DIMENSIONS (WxDxH)
EXTERIOR FINISH
10.2 lbs. (4.6 kg) 480pcs.
N/A
90/70°F
1090(6.0)
99(22.8)
70/50°F
980(4.7)
188(37.6)
22" x 27-3/8" x 30-5/16" (560 x 695 x 770 mm)
Stainless Steel, Galvanized Steel (Rear)
Net 151 lbs. (68 kg), Shipping 175 lbs. (79 kg)
Permanent-Connection
WEIGHT
CONNECTIONS - ELECTRIC
- WATER SUPPLY
Inlet
1/2" FPT
- DRAIN
Outlet
3/4" FPT
3/8" OD Tube
CUBE CONTROL SYSTEM
HARVESTING CONTROL SYSTEM
ICE MAKING WATER CONTROL
COOLING WATER CONTROL
BIN CONTROL SYSTEM
COMPRESSOR
Float Switch
Hot Gas and Water, Thermistor and Timer
Timer Controlled. Overflow Pipe
N/A
Thermostatic or Mechanical Bin Control
Hermetic, Model RST55C1E-CAA-202
Air-Cooled, Fin and Tube Type
Vertical Type, Stainless Steel and Copper
Thermostatic Expansion Valve
R404A, 1 lb. 7.3 oz. (660g)
High 467PSIG, Low 206PSIG
High Voltage Cut-Out (Internal)
Auto-Reset Overload Protector (Internal)
Auto-Reset High Pressure Control Switch
Float Switch
CONDENSER
EVAPORATOR
REFRIGERANT CONTROL
REFRIGERANT CHARGE
DESIGN PRESSURE
P.C. BOARD CIRCUIT PROTECTION
COMPRESSOR PROTECTION
REFRIGERANT CIRCUIT PROTECTION
LOW WATER PROTECTION
ACCESSORIES -SUPPLIED
-REQUIRED
N/A
Ice Dispenser or Ice Storage Bin
VOLTAGE RANGE
OPERATING CONDITIONS
104 - 127 V
45 -100° F
AMBIENT TEMP.
WATER SUPPLY TEMP.
WATER SUPPLY PRESSURE
45 - 90° F
10 - 113 PSIG
Note: We reserve the right to make changes in specifications and design without prior
notice.
61
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4. KM-515MWH
AC SUPPLY VOLTAGE
AMPERAGE
115/60/1
9.6 A (5 Min. Freeze AT 104°F/WT 80°F)
MINIMUM CIRCUIT AMPACITY
MAXIMUM FUSE SIZE
APPROXIMATE ICE PRODUCTION
PER 24 HR.
20 A
20 A
Ambient
WATER TEMP. (°F)
Temp.(°F)
50
70
90
lbs./day ( kg/day )
Reference without *marks
70
80
90
100
*500 (227)
486 (220)
481 (218)
481 (218)
481 (218)
457 (207)
*436 (198)
433 (196)
465 (211)
445 (202)
422 (191)
409 (186)
SHAPE OF ICE
Crescent Cube
ICE PRODUCTION PER CYCLE
APPROXIMATE STORAGE CAPACITY
ELECTRIC & WATER CONSUMPTION
ELECTRIC W (kWH/100 lbs.)
WATER gal./24HR (gal./100 lbs.)
WATER COOLED CONDENSER
gal./24HR (gal./100 lbs.)
10.3 lbs. (4.7 kg) 480pcs.
N/A
90/70°F
960(5.30)
105(24.0)
523(120)
70/50°F
940(4.5)
163(32.5)
352(70)
EXTERIOR DIMENSIONS (WxDxH)
EXTERIOR FINISH
WEIGHT
CONNECTIONS - ELECTRIC
- WATER SUPPLY
22" x 27-3/8" x 30-5/16" (560 x 695 x 770 mm)
Stainless Steel, Galvanized Steel (Rear)
Net 151 lbs. (68 kg), Shipping 175 lbs. (79 kg)
Permanent-Connection
Inlet
1/2" FPT
Cond. Inlet
1/2" FPT
- DRAIN
Outlet
3/4" FPT
Cond. Outlet 3/8" FPT
3/8" OD Tube
CUBE CONTROL SYSTEM
HARVESTING CONTROL SYSTEM
ICE MAKING WATER CONTROL
COOLING WATER CONTROL
BIN CONTROL SYSTEM
COMPRESSOR
Float Switch
Hot Gas and Water, Thermistor and Timer
Timer Controlled. Overflow Pipe
Pressure Regulator
Thermostatic or Mechanical Bin Control
Hermetic, Model RST55C1E-CAA-202
Water-Cooled, Tube in Tube Type
Vertical Type, Stainless Steel and Copper
Thermostatic Expansion Valve
R404A, 0 lb. 14.8 oz. (420g)
High 427PSIG, Low 206PSIG
High Voltage Cut-Out (Internal)
Auto-Reset Overload Protector (Internal)
Auto-Reset High Pressure Control Switch
Float Switch
CONDENSER
EVAPORATOR
REFRIGERANT CONTROL
REFRIGERANT CHARGE
DESIGN PRESSURE
P.C. BOARD CIRCUIT PROTECTION
COMPRESSOR PROTECTION
REFRIGERANT CIRCUIT PROTECTION
LOW WATER PROTECTION
ACCESSORIES -SUPPLIED
-REQUIRED
N/A
Ice Dispenser or Ice Storage Bin
OPERATING CONDITIONS
VOLTAGE RANGE
AMBIENT TEMP.
104 - 127 V
45 -100° F
WATER SUPPLY TEMP.
WATER SUPPLY PRESSURE
45 - 90° F
10 - 113 PSIG
Note: We reserve the right to make changes in specifications and design without prior
notice.
62
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5. KM-515MRH
AC SUPPLY VOLTAGE
AMPERAGE
115/60/1
11.3A (5 Min. Freeze AT 104°F/WT 80°F)
MINIMUM CIRCUIT AMPACITY
MAXIMUM FUSE SIZE
APPROXIMATE ICE PRODUCTION
PER 24 HR.
20 A
20 A
Ambient
WATER TEMP. (°F)
Temp.(°F)
50
70
90
lbs./day ( kg/day )
Reference without *marks
70
80
90
100
*491 (223)
482 (219)
480 (218)
465 (211)
480 (218)
465 (211)
*452 (205)
442 (200)
443 (201)
417 (189)
408 (185)
368 (167)
SHAPE OF ICE
Crescent Cube
ICE PRODUCTION PER CYCLE
APPROXIMATE STORAGE CAPACITY
ELECTRIC & WATER CONSUMPTION
ELECTRIC W (kWH/100 lbs.)
WATER gal./24HR (gal./100 lbs.)
EXTERIOR DIMENSIONS (WxDxH)
EXTERIOR FINISH
10.3 lbs. (4.7 kg) 480pcs.
N/A
90/70°F
1090(5.8)
94(20.8)
70/50°F
1000(4.9)
198(40.4)
22" x 27-3/8" x 30-5/16" (560 x 695 x 770 mm)
Stainless Steel, Galvanized Steel (Rear)
Net 151 lbs. (68 kg), Shipping 175 lbs. (79 kg)
Permanent-Connection
WEIGHT
CONNECTIONS - ELECTRIC
- WATER SUPPLY
Inlet
1/2" FPT
- DRAIN
Outlet
3/4" FPT
3/8" OD Tube
CUBE CONTROL SYSTEM
HARVESTING CONTROL SYSTEM
ICE MAKING WATER CONTROL
COOLING WATER CONTROL
BIN CONTROL SYSTEM
COMPRESSOR
CONDENSER
EVAPORATOR
REFRIGERANT CONTROL
Float Switch
Hot Gas and Water, Thermistor and Timer
Timer Controlled. Overflow Pipe
N/A
Thermostatic or Mechanical Bin Control
Hermetic, Model RST55C1E-CAA-202
Remote Condenser Unit: URC-5F
Vertical Type, Stainless Steel and Copper
Thermostatic Expansion Valve
Condensing Pressure Regulator on URC-5F
R404A, 4 lbs. 4.8 oz. (1950g)
(Icemaker 2 lbs. 6.8 oz. Cond. Unit 1 lbs. 14 oz.)
High 467PSIG, Low 206PSIG
High Voltage Cut-Out (Internal)
Auto-Reset Overload Protector (Internal)
Auto-Reset High Pressure Control Switch
Float Switch
REFRIGERANT CHARGE
DESIGN PRESSURE
P.C. BOARD CIRCUIT PROTECTION
COMPRESSOR PROTECTION
REFRIGERANT CIRCUIT PROTECTION
LOW WATER PROTECTION
ACCESSORIES -SUPPLIED
-REQUIRED
N/A
Ice Dispenser or Ice Storage Bin, Remote Condenser Unit
OPERATING CONDITIONS
VOLTAGE RANGE
104 - 127 V
AMBIENT TEMP.
WATER SUPPLY TEMP.
WATER SUPPLY PRESSURE
45 -100° F
45 - 90° F
10 - 113 PSIG
Note: We reserve the right to make changes in specifications and design without prior
notice.
63
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6. KM-600MAH
AC SUPPLY VOLTAGE
AMPERAGE
115-120/60/1
12.0 A (5 Min. Freeze AT 104°F/WT 80°F)
MINIMUM CIRCUIT AMPACITY
MAXIMUM FUSE SIZE
APPROXIMATE ICE PRODUCTION
PER 24 HR.
15 A
15 A
Ambient
WATER TEMP. (°F)
Temp.(°F)
50
70
90
lbs./day ( kg/day )
Reference without *marks
70
80
90
100
*592 (269)
572 (260)
566 (257)
551 (250)
566 (257)
532 (241)
*503 (228)
490 (222)
516 (234)
474 (215)
447 (203)
396 (180)
SHAPE OF ICE
Crescent Cube
ICE PRODUCTION PER CYCLE
APPROXIMATE STORAGE CAPACITY
ELECTRIC & WATER CONSUMPTION
ELECTRIC W (kWH/100 lbs.)
WATER gal./24HR (gal./100 lbs.)
14.3 lbs. (6.5 kg) 720 pcs.
N/A
90/70°F
1190(5.7)
99(19.7)
70/50°F
1040(4.2)
259(43.7)
EXTERIOR DIMENSIONS (WxDxH)
EXTERIOR FINISH
WEIGHT
CONNECTIONS - ELECTRIC
- WATER SUPPLY
22" x 27-3/8" x 37-7/16" (560 x 695 x 950 mm)
Stainless Steel, Galvanized Steel (Rear)
Net 169 lbs. (77 kg), Shipping 200 lbs. (91 kg)
Permanent-Connection
Inlet
1/2" FPT
- DRAIN
Outlet
3/4" FPT
3/8" OD Tube
CUBE CONTROL SYSTEM
HARVESTING CONTROL SYSTEM
ICE MAKING WATER CONTROL
COOLING WATER CONTROL
BIN CONTROL SYSTEM
COMPRESSOR
Float Switch
Hot Gas and Water, Thermistor and Timer
Timer Controlled. Overflow Pipe
N/A
Thermostatic or Mechanical Bin Control
Hermetic, Model RST55C1E-CAA
Air-Cooled, Fin and Tube Type
Vertical Type, Stainless Steel and Copper
Thermostatic Expansion Valve
R-404A, 1 lb. 11 oz. (765g)
High 467PSIG, Low 230PSIG
High Voltage Cut-Out (Internal)
Auto-Reset Overload Protector (Internal)
Auto-Reset High Pressure Control Switch
Float Switch
CONDENSER
EVAPORATOR
REFRIGERANT CONTROL
REFRIGERANT CHARGE
DESIGN PRESSURE
P.C. BOARD CIRCUIT PROTECTION
COMPRESSOR PROTECTION
REFRIGERANT CIRCUIT PROTECTION
LOW WATER PROTECTION
ACCESSORIES -SUPPLIED
-REQUIRED
N/A
Ice Storage Bin
OPERATING CONDITIONS
VOLTAGE RANGE
AMBIENT TEMP.
104 - 127 V
45 -100° F
WATER SUPPLY TEMP.
WATER SUPPLY PRESSURE
45 - 90° F
10 - 113 PSIG
Note: We reserve the right to make changes in specifications and design without prior
notice.
64
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7. KM-650MAH
AC SUPPLY VOLTAGE
AMPERAGE
208-230/60/1 (3 wire for 115V)
7.2 A (5 Min. Freeze AT 104°F/WT 80°F)
MINIMUM CIRCUIT AMPACITY
MAXIMUM FUSE SIZE
APPROXIMATE ICE PRODUCTION
PER 24 HR.
15 A
15 A
Ambient
WATER TEMP. (°F)
Temp.(°F)
50
70
90
lbs./day ( kg/day )
Reference without *marks
70
80
90
100
*661 (300)
639 (290)
632 (287)
624 (283)
632 (287)
594 (269)
*562 (255)
552 (250)
591 (268)
553 (251)
520 (236)
482 (219)
SHAPE OF ICE
Crescent Cube
ICE PRODUCTION PER CYCLE
APPROXIMATE STORAGE CAPACITY
ELECTRIC & WATER CONSUMPTION
ELECTRIC W (kWH/100 lbs.)
WATER gal./24HR (gal./100 lbs.)
C
14.6 lbs. (6.6 kg) 720 pcs.
N/A
90/70°F
1290(5.51)
101(18.0)
70/50°F
1180(4.30)
232(35.1)
EXTERIOR DIMENSIONS (WxDxH)
EXTERIOR FINISH
WEIGHT
CONNECTIONS - ELECTRIC
- WATER SUPPLY
22" x 27-3/8" x 37-7/16" (560 x 695 x 950 mm)
Stainless Steel, Galvanized Steel (Rear)
Net 169 lbs. (77 kg), Shipping 200 lbs. (91 kg)
Permanent-Connection
Inlet
1/2" FPT
- DRAIN
Outlet
3/4" FPT
3/8" OD Tube
CUBE CONTROL SYSTEM
HARVESTING CONTROL SYSTEM
ICE MAKING WATER CONTROL
COOLING WATER CONTROL
BIN CONTROL SYSTEM
COMPRESSOR
Float Switch
Hot Gas and Water, Thermistor and Timer
Timer Controlled. Overflow Pipe
N/A
Thermostatic or Mechanical Bin Control
Hermetic, Model RST61C1E-CAV-202
Air-Cooled, Fin and Tube Type
Vertical Type, Stainless Steel and Copper
Thermostatic Expansion Valve
R-404A, 1 lb. 8 oz. (680g)
High 467PSIG, Low 230PSIG
High Voltage Cut-Out (Internal)
Auto-Reset Overload Protector (Internal)
Auto-Reset High Pressure Control Switch
Float Switch
CONDENSER
EVAPORATOR
REFRIGERANT CONTROL
REFRIGERANT CHARGE
DESIGN PRESSURE
P.C. BOARD CIRCUIT PROTECTION
COMPRESSOR PROTECTION
REFRIGERANT CIRCUIT PROTECTION
LOW WATER PROTECTION
ACCESSORIES -SUPPLIED
-REQUIRED
N/A
Ice Storage Bin
OPERATING CONDITIONS
VOLTAGE RANGE
AMBIENT TEMP.
187 - 253 V
45 -100° F
WATER SUPPLY TEMP.
WATER SUPPLY PRESSURE
45 - 90° F
10 - 113 PSIG
Note: We reserve the right to make changes in specifications and design without prior
notice.
65
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8. KM-650MWH
AC SUPPLY VOLTAGE
AMPERAGE
208-230/60/1 (3 wire for 115V)
5.4 A (5 Min. Freeze AT 104°F/WT 80°F)
MINIMUM CIRCUIT AMPACITY
MAXIMUM FUSE SIZE
APPROXIMATE ICE PRODUCTION
PER 24 HR.
15 A
15 A
Ambient
WATER TEMP. (°F)
Temp.(°F)
50
70
90
lbs./day ( kg/day )
Reference without *marks
70
80
90
100
*661 (300)
652 (296)
649 (294)
637 (289)
649 (294)
633 (287)
*620 (281)
611 (277)
616 (280)
591 (268)
581 (264)
546 (248)
SHAPE OF ICE
Crescent Cube
ICE PRODUCTION PER CYCLE
APPROXIMATE STORAGE CAPACITY
ELECTRIC & WATER CONSUMPTION
ELECTRIC W (kWH/100 lbs.)
WATER gal./24HR (gal./100 lbs.)
WATER COOLED CONDENSER
gal./24HR (gal./100 lbs.)
14.2 lbs. (6.5 kg) 720 pcs.
N/A
90/70°F
1060(4.10)
138(22.3)
70/50°F
1080(3.92)
268(40.5)
476(72)
744(120)
EXTERIOR DIMENSIONS (WxDxH)
EXTERIOR FINISH
WEIGHT
CONNECTIONS - ELECTRIC
- WATER SUPPLY
22" x 27-3/8" x 37-7/16" (560 x 695 x 950 mm)
Stainless Steel, Galvanized Steel (Rear)
Net 169 lbs. (77 kg), Shipping 200 lbs. (91 kg)
Permanent-Connection
Inlet
1/2" FPT
Condenser Inlet 1/2" FPT
Condenser Outlet 3/8" FPT
- DRAIN
Outlet
3/4" FPT
3/8" OD Tube
CUBE CONTROL SYSTEM
HARVESTING CONTROL SYSTEM
ICE MAKING WATER CONTROL
COOLING WATER CONTROL
BIN CONTROL SYSTEM
COMPRESSOR
Float Switch
Hot Gas and Water, Thermistor and Timer
Timer Controlled. Overflow Pipe
Pressure Regulator
Thermostatic or Mechanical Bin Control
Hermetic, Model RST61C1E-CAV-202
Water-Cooled, Tube in Tube Type
Vertical Type, Stainless Steel and Copper
Thermostatic Expansion Valve
R-404A, 1 lb. 5.2 oz. (600g)
High 427PSIG, Low 230PSIG
High Voltage Cut-Out (Internal)
Auto-Reset Overload Protector (Internal)
Auto-Reset High Pressure Control Switch
Float Switch
CONDENSER
EVAPORATOR
REFRIGERANT CONTROL
REFRIGERANT CHARGE
DESIGN PRESSURE
P.C. BOARD CIRCUIT PROTECTION
COMPRESSOR PROTECTION
REFRIGERANT CIRCUIT PROTECTION
LOW WATER PROTECTION
ACCESSORIES -SUPPLIED
-REQUIRED
N/A
Ice Storage Bin
OPERATING CONDITIONS
VOLTAGE RANGE
AMBIENT TEMP.
187 - 253 V
45 -100° F
WATER SUPPLY TEMP.
45 - 90° F
WATER SUPPLY PRESSURE
10 - 113 PSIG
Note: We reserve the right to make changes in specifications and design without prior
notice.
66
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9. KM-650MWH-M
AWAITING DATA
Note: We reserve the right to make changes in specifications and design without prior
notice.
67
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10. KM-650MRH
AC SUPPLY VOLTAGE
AMPERAGE
208-230/60/1 (3 wire for 115V)
7.4 A (5 Min. Freeze AT 104°F/WT 80°F)
MINIMUM CIRCUIT AMPACITY
MAXIMUM FUSE SIZE
APPROXIMATE ICE PRODUCTION
PER 24 HR.
15 A
15 A
Ambient
WATER TEMP. (°F)
Temp.(°F)
50
70
90
lbs./day ( kg/day )
Reference without *marks
70
80
90
100
*632 (287)
617 (280)
612 (278)
601 (272)
612 (278)
586 (266)
*564 (256)
554 (251)
574 (260)
541 (246)
521 (236)
482 (219)
SHAPE OF ICE
Crescent Cube
ICE PRODUCTION PER CYCLE
APPROXIMATE STORAGE CAPACITY
ELECTRIC & WATER CONSUMPTION
ELECTRIC W (kWH/100 lbs.)
WATER gal./24HR (gal./100 lbs.)
14.4 lbs. (6.5 kg) 720 pcs.
N/A
90/70°F
1320(5.6)
93(16.5)
70/50°F
1220(4.6)
267(42.2)
EXTERIOR DIMENSIONS (WxDxH)
EXTERIOR FINISH
WEIGHT
CONNECTIONS - ELECTRIC
- WATER SUPPLY
22" x 27-3/8" x 37-7/16" (560 x 695 x 950 mm)
Stainless Steel, Galvanized Steel (Rear)
Net 169 lbs. (77 kg), Shipping 200 lbs. (91 kg)
Permanent-Connection
Inlet
1/2" FPT
- DRAIN
Outlet
3/4" FPT
3/8" OD Tube
CUBE CONTROL SYSTEM
HARVESTING CONTROL SYSTEM
ICE MAKING WATER CONTROL
COOLING WATER CONTROL
BIN CONTROL SYSTEM
COMPRESSOR
CONDENSER
EVAPORATOR
REFRIGERANT CONTROL
Float Switch
Hot Gas and Water, Thermistor and Timer
Timer Controlled. Overflow Pipe
N/A
Thermostatic or Mechanical Bin Control
Hermetic, Model RST61C1E-CAV
Remote Condenser Unit: URC-5F
Vertical Type, Stainless Steel and Copper
Thermostatic Expansion Valve
Condensing Pressure Regulator on URC-5F
R-404A, 5 lbs. 14.9 oz. (2690 g)
(Icemaker 4 lbs. 0.9 oz. Cond. Unit 1 lb. 14 oz.)
High 467 PSIG, Low 230 PSIG
High Voltage Cut-Out (Internal)
Auto-Reset Overload Protector (Internal)
Auto-Reset High Pressure Control Switch
Float Switch
REFRIGERANT CHARGE
DESIGN PRESSURE
P.C. BOARD CIRCUIT PROTECTION
COMPRESSOR PROTECTION
REFRIGERANT CIRCUIT PROTECTION
LOW WATER PROTECTION
ACCESSORIES -SUPPLIED
-REQUIRED
N/A
Ice Storage Bin, Remote Condenser Unit
VOLTAGE RANGE
OPERATING CONDITIONS
187 - 253 V
45 -100° F
AMBIENT TEMP.
WATER SUPPLY TEMP.
45 - 90° F
WATER SUPPLY PRESSURE
10 - 113 PSIG
Note: We reserve the right to make changes in specifications and design without prior
notice.
68
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11. KM-901MAH
AC SUPPLY VOLTAGE
AMPERAGE
208-230/60/1 (3 wire for 115V)
11.4 A (5 Min. Freeze AT 104°F/WT 80°F)
MINIMUM CIRCUIT AMPACITY
MAXIMUM FUSE SIZE
APPROXIMATE ICE PRODUCTION
PER 24 HR.
20 A
20 A
Ambient
WATER TEMP. (°F)
Temp.(°F)
50
70
90
lbs./day ( kg/day )
Reference without *marks
70
80
90
100
*874 (396)
842 (382)
832 (378)
826 (375)
832 (378)
778 (353)
*732 (332)
721 (327)
785 (356)
736 (334)
687 (312)
646 (293)
SHAPE OF ICE
Crescent Cube
ICE PRODUCTION PER CYCLE
APPROXIMATE STORAGE CAPACITY
ELECTRIC & WATER CONSUMPTION
ELECTRIC W (kWH/100 lbs.)
WATER gal./24HR (gal./100 lbs.)
EXTERIOR DIMENSIONS (WxDxH)
EXTERIOR FINISH
13.6 lbs. (6.2 kg) 720pcs.
N/A
90/70°F
1710(5.6)
143(19.6)
70/50°F
1600(4.4)
240(27.5)
30" x 27-3/8" x 37-7/16" (762 x 695 x 950 mm)
Stainless Steel, Galvanized Steel (Rear)
Net 196 lbs. (89 kg), Shipping 256 lbs. (116 kg)
Permanent-Connection
WEIGHT
CONNECTIONS - ELECTRIC
- WATER SUPPLY
Inlet
1/2" FPT
- DRAIN
Outlet
3/4" FPT
3/8" OD Tube
CUBE CONTROL SYSTEM
HARVESTING CONTROL SYSTEM
ICE MAKING WATER CONTROL
COOLING WATER CONTROL
BIN CONTROL SYSTEM
COMPRESSOR
Float Switch
Hot Gas and Water, Thermistor and Timer
Timer Controlled. Overflow Pipe
N/A
Thermostatic or Mechanical Bin Control
Hermetic, Model CS12K6E-PFV-237
Air-Cooled, Fin and Tube Type
Vertical Type, Stainless Steel and Copper
Thermostatic Expansion Valve
R404A, 2 lb. 15 oz. (1320g)
High 467PSIG, Low 230PSIG
High Voltage Cut-Out (Internal)
Auto-Reset Overload Protector (Internal)
Auto-Reset High Pressure Control Switch
Float Switch
CONDENSER
EVAPORATOR
REFRIGERANT CONTROL
REFRIGERANT CHARGE
DESIGN PRESSURE
P.C. BOARD CIRCUIT PROTECTION
COMPRESSOR PROTECTION
REFRIGERANT CIRCUIT PROTECTION
LOW WATER PROTECTION
ACCESSORIES -SUPPLIED
-REQUIRED
N/A
Ice Storage Bin
OPERATING CONDITIONS
VOLTAGE RANGE
AMBIENT TEMP.
187 - 253 V
45 -100° F
WATER SUPPLY TEMP.
WATER SUPPLY PRESSURE
45 - 90° F
10 - 113 PSIG
Note: We reserve the right to make changes in specifications and design without prior
notice.
69
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12. KM-901MWH
AC SUPPLY VOLTAGE
AMPERAGE
208-230/60/1 (3 wire for 115V)
8.7A (5 Min. Freeze AT 104°F/WT 80°F)
MINIMUM CIRCUIT AMPACITY
MAXIMUM FUSE SIZE
APPROXIMATE ICE PRODUCTION
PER 24 HR.
15 A
15 A
Ambient
WATER TEMP. (°F)
Temp.(°F)
50
70
90
lbs./day ( kg/day )
Reference without *marks
70
80
90
100
*912 (414)
893 (405)
887 (402)
878 (398)
887 (402)
854 (388)
*827 (375)
818 (371)
849 (385)
815 (370)
787 (357)
751 (341)
SHAPE OF ICE
Crescent Cube
ICE PRODUCTION PER CYCLE
APPROXIMATE STORAGE CAPACITY
ELECTRIC & WATER CONSUMPTION
ELECTRIC W (kWH/100 lbs.)
WATER gal./24HR (gal./100 lbs.)
WATER COOLED CONDENSER
gal./24HR (gal./100 lbs.)
13.4 lbs. (6.1 kg) 720pcs.
N/A
90/70°F
1550(4.5)
181(21.9)
1151(139)
70/50°F
1480(3.9)
245(26.9)
631(69)
EXTERIOR DIMENSIONS (WxDxH)
EXTERIOR FINISH
WEIGHT
CONNECTIONS - ELECTRIC
- WATER SUPPLY
30" x 27-3/8" x 37-7/16" (762 x 695 x 950 mm)
Stainless Steel, Galvanized Steel (Rear)
Net 189 lbs. (86 kg), Shipping 249 lbs. (113 kg)
Permanent-Connection
Inlet
1/2" FPT
Cond. Inlet
1/2" FPT
- DRAIN
Outlet
3/4" FPT
Cond. Outlet 3/8" FPT
3/8" OD Tube
CUBE CONTROL SYSTEM
HARVESTING CONTROL SYSTEM
ICE MAKING WATER CONTROL
COOLING WATER CONTROL
BIN CONTROL SYSTEM
COMPRESSOR
Float Switch
Hot Gas and Water, Thermistor and Timer
Timer Controlled. Overflow Pipe
Pressure Regulator
Thermostatic or Mechanical Bin Control
Hermetic, Model CS12K6E-PFV-237
Water-Cooled, Tube in Tube Type
Vertical Type, Stainless Steel and Copper
Thermostatic Expansion Valve
R404A, 1 lb. 15.4 oz. (890g)
High 427PSIG, Low 230PSIG
High Voltage Cut-Out (Internal)
Auto-Reset Overload Protector (Internal)
Auto-Reset High Pressure Control Switch
Float Switch
CONDENSER
EVAPORATOR
REFRIGERANT CONTROL
REFRIGERANT CHARGE
DESIGN PRESSURE
P.C. BOARD CIRCUIT PROTECTION
COMPRESSOR PROTECTION
REFRIGERANT CIRCUIT PROTECTION
LOW WATER PROTECTION
ACCESSORIES -SUPPLIED
-REQUIRED
N/A
Ice Storage Bin
OPERATING CONDITIONS
VOLTAGE RANGE
AMBIENT TEMP.
187 - 253 V
45 -100° F
WATER SUPPLY TEMP.
45 - 90° F
WATER SUPPLY PRESSURE
10 - 113 PSIG
Note: We reserve the right to make changes in specifications and design without prior
notice.
70
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13. KM-901MRH
AC SUPPLY VOLTAGE
AMPERAGE
208-230/60/1 (3 wire for 115V)
11.6A (5 Min. Freeze AT 104°F/WT 80°F)
MINIMUM CIRCUIT AMPACITY
MAXIMUM FUSE SIZE
APPROXIMATE ICE PRODUCTION
PER 24 HR.
20 A
20 A
Ambient
WATER TEMP. (°F)
Temp.(°F)
50
70
90
lbs./day ( kg/day )
Reference without *marks
70
80
90
100
*889 (403)
866 (393)
859 (389)
843 (382)
859 (389)
818 (371)
*785 (356)
771 (350)
803 (364)
755 (343)
724 (328)
668 (303)
SHAPE OF ICE
Crescent Cube
ICE PRODUCTION PER CYCLE
APPROXIMATE STORAGE CAPACITY
ELECTRIC & WATER CONSUMPTION
ELECTRIC W (kWH/100 lbs.)
WATER gal./24HR (gal./100 lbs.)
EXTERIOR DIMENSIONS (WxDxH)
EXTERIOR FINISH
13.5 lbs. (6.1 kg) 720pcs.
N/A
90/70°F
1770(5.4)
152(19.3)
70/50°F
1590(4.3)
246(27.7)
30" x 27-3/8" x 37-7/16" (762 x 695 x 950 mm)
Stainless Steel, Galvanized Steel (Rear)
Net 189 lbs. (86 kg), Shipping 249 lbs. (113 kg)
Permanent-Connection
WEIGHT
CONNECTIONS - ELECTRIC
- WATER SUPPLY
Inlet
1/2" FPT
- DRAIN
Outlet
3/4" FPT
3/8" OD Tube
CUBE CONTROL SYSTEM
HARVESTING CONTROL SYSTEM
ICE MAKING WATER CONTROL
COOLING WATER CONTROL
BIN CONTROL SYSTEM
COMPRESSOR
CONDENSER
EVAPORATOR
REFRIGERANT CONTROL
Float Switch
Hot Gas and Water, Thermistor and Timer
Timer Controlled. Overflow Pipe
N/A
Thermostatic or Mechanical Bin Control
Hermetic, Model CS12K6E-PFV-279
Remote Condenser Unit: URC-9F
Vertical Type, Stainless Steel and Copper
Thermostatic Expansion Valve
Condensing Pressure Regulator on URC-9F
R404A, 9 lbs. 4 oz. (4200g)
(Icemaker 5 lbs. 5 oz. Cond. Unit 3 lbs. 15 oz.)
High 467PSIG, Low 230PSIG
High Voltage Cut-Out (Internal)
Auto-Reset Overload Protector (Internal)
Auto-Reset High Pressure Control Switch
Float Switch
REFRIGERANT CHARGE
DESIGN PRESSURE
P.C. BOARD CIRCUIT PROTECTION
COMPRESSOR PROTECTION
REFRIGERANT CIRCUIT PROTECTION
LOW WATER PROTECTION
ACCESSORIES -SUPPLIED
-REQUIRED
N/A
Ice Storage Bin, Remote Condenser Unit
VOLTAGE RANGE
OPERATING CONDITIONS
187 - 253 V
45 -100° F
AMBIENT TEMP.
WATER SUPPLY TEMP.
WATER SUPPLY PRESSURE
45 - 90° F
10 - 113 PSIG
Note: We reserve the right to make changes in specifications and design without prior
notice.
71
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14. KM-901MRH3
AC SUPPLY VOLTAGE
AMPERAGE
208-230/60/3
7.0A (5 Min. Freeze AT 104°F/WT 80°F)
MINIMUM CIRCUIT AMPACITY
MAXIMUM FUSE SIZE
APPROXIMATE ICE PRODUCTION
PER 24 HR.
20 A
20 A
Ambient
WATER TEMP. (°F)
Temp.(°F)
50
70
90
lbs./day ( kg/day )
Reference without *marks
70
80
90
100
*899 (408)
880 (399)
874 (397)
855 (388)
874 (397)
842 (382)
*815 (370)
800 (363)
817 (371)
772 (350)
749 (340)
689 (313)
SHAPE OF ICE
Crescent Cube
ICE PRODUCTION PER CYCLE
APPROXIMATE STORAGE CAPACITY
ELECTRIC & WATER CONSUMPTION
ELECTRIC W (kWH/100 lbs.)
WATER gal./24HR (gal./100 lbs.)
EXTERIOR DIMENSIONS (WxDxH)
EXTERIOR FINISH
14.2 lbs. (6.4 kg) 720pcs.
N/A
90/70°F
1830(5.4)
147(18.0)
70/50°F
1670(4.5)
254(28.2)
30" x 27-3/8" x 37-7/16" (762 x 695 x 950 mm)
Stainless Steel, Galvanized Steel (Rear)
Net 198 lbs. (90 kg), Shipping 258 lbs. (117 kg)
Permanent-Connection
WEIGHT
CONNECTIONS - ELECTRIC
- WATER SUPPLY
Inlet
1/2" FPT
- DRAIN
Outlet
3/4" FPT
3/8" OD Tube
CUBE CONTROL SYSTEM
HARVESTING CONTROL SYSTEM
ICE MAKING WATER CONTROL
COOLING WATER CONTROL
BIN CONTROL SYSTEM
COMPRESSOR
CONDENSER
EVAPORATOR
REFRIGERANT CONTROL
Float Switch
Hot Gas and Water, Thermistor and Timer
Timer Controlled. Overflow Pipe
N/A
Thermostatic or Mechanical Bin Control
Hermetic, Model CS12K6E-TF5-279
Remote Condenser Unit: URC-9F
Vertical Type, Stainless Steel and Copper
Thermostatic Expansion Valve
Condensing Pressure Regulator on URC-9F
R404A, 9 lbs. 4 oz. (4200g)
(Icemaker 5 lbs. 5 oz. Cond. Unit 3 lbs. 15 oz.)
High 467PSIG, Low 230PSIG
High Voltage Cut-Out (Internal)
Auto-Reset Overload Protector (Internal)
Auto-Reset High Pressure Control Switch
Float Switch
REFRIGERANT CHARGE
DESIGN PRESSURE
P.C. BOARD CIRCUIT PROTECTION
COMPRESSOR PROTECTION
REFRIGERANT CIRCUIT PROTECTION
LOW WATER PROTECTION
ACCESSORIES -SUPPLIED
-REQUIRED
N/A
Ice Storage Bin, Remote Condenser Unit
VOLTAGE RANGE
OPERATING CONDITIONS
187 - 253 V
45 -100° F
AMBIENT TEMP.
WATER SUPPLY TEMP.
WATER SUPPLY PRESSURE
45 - 90° F
10 - 113 PSIG
Note: We reserve the right to make changes in specifications and design without prior
notice.
72
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B. Performance Data
1. KM-320MAH
APPROXIMATE ICE
PRODUCTION PER 24 HR.
WATER TEMP. (ºF/ºC)
70/21
AMBIENT TEMP.
(ºF/ºC)
50/10
90/32
70/21
80/27
325
315
147
143
311
293
141
133
287
265
130
120
90/32
100/38
311
304
141
138
278
272
126
123
251
226
114
103
lbs./day kg./day
APPROXIMATE ELECTRIC
CONSUMPTION
70/21
80/27
90/32
750
761
765
765
765
784
800
802
777
792
810
820
watts
100/38
70/21
APPROXIMATE WATER
CONSUMPTION PER 24 HR.
117
102
97
0.44
0.39
0.37
97
72
51
0.37
0.27
0.19
86
69
44
0.33
0.26
0.17
80/27
90/32
gal./day m3/day
100/38
75
0.28
50
0.19
38
0.14
FREEZING CYCLE TIME
70/21
80/27
29
31
31
34
35
38
90/32
100/38
70/21
31
32
37
38
41
45
min.
HARVEST CYCLE TIME
5.5
4.6
4.2
80/27
90/32
4.8
4.6
3.5
2.5
3.4
2.3
min.
100/38
70/21
80/27
90/32
3.6
2.5
2.1
HEAD PRESSURE
216
230
235
15.2
16.2
16.5
235
259
280
16.5
18.2
19.7
255
277
299
17.9
19.5
21.0
PSIG kg/cm2G
100/38
70/21
80/27
90/32
100/38
237
52
53
53
53
16.7
3.7
3.7
3.7
3.7
285
53
54
55
55
20.0
3.7
3.8
3.9
3.9
317
54
54
56
56
22.3
3.8
3.8
3.9
3.9
SUCTION PRESSURE
PSIG kg/cm2G
TOTAL HEAT OF REJECTION FROM CONDENSER
7,400 BTU/h [AT 90ºF (32ºC) / WT 70ºF (21ºC)]
Note:
1. Pressure data is recorded at 5 min. into freezing cycle. The data not in bold
should be used for reference only.
2. We reserve the right to make changes in specifications and design without prior
notice.
73
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2. KM-320MWH
APPROXIMATE ICE
PRODUCTION PER 24 HR.
WATER TEMP. (ºF/ºC)
70/21
115-120/60/1
50/10
90/32
70/21
80/27
352
349
160
158
348
342
158
155
324
309
147
140
90/32
100/38
348
337
158
153
337
330
153
150
308
281
140
127
lbs./day kg./day
APPROXIMATE ELECTRIC
CONSUMPTION
70/21
80/27
90/32
730
730
730
726
730
730
730
728
722
718
720
710
watts
100/38
70/21
APPROXIMATE WATER
CONSUMPTION PER 24 HR.
430
465
476
1.63
1.76
1.80
476
535
585
1.80
2.03
2.21
682
822
842
2.58
3.11
3.19
80/27
90/32
gal./day m3/day
100/38
605
2.29
645
2.44
1078
4.08
FREEZING CYCLE TIME
70/21
80/27
27
28
28
30
30
32
90/32
100/38
70/21
28
29
31
31
33
35
min.
HARVEST CYCLE TIME
5.0
4.4
4.0
80/27
90/32
4.5
4.4
3.5
2.8
3.4
2.6
min.
100/38
70/21
80/27
90/32
3.6
2.8
2.4
HEAD PRESSURE
263
263
263
18.5
18.5
18.5
263
263
263
18.5
18.5
18.5
265
265
265
18.6
18.7
18.6
PSIG kg/cm2G
100/38
70/21
80/27
90/32
100/38
264
53
54
54
54
18.6
3.7
3.8
3.8
3.8
263
54
56
57
57
18.5
3.8
3.9
4.0
4.0
267
55
56
58
58
18.8
3.9
3.9
4.0
4.1
SUCTION PRESSURE
PSIG kg/cm2G
TOTAL HEAT OF REJECTION FROM CONDENSER
5,700 BTU/h [AT 90ºF (32ºC) / WT 70ºF (21ºC)]
1,000 BTU/h [AT 90ºF (32ºC) / WT 70ºF (21ºC)]
45 gal./h [AT 100ºF (38ºC) / WT 90ºF (32ºC)]
TOTAL HEAT OF REJECTION FROM COMPRESSOR
WATER FLOW FOR CONDENSER
PRESSURE DROP OF COOLING WATER LINE
less than 10 PSIG
Note:
1. Pressure data is recorded at 5 min. into freezing cycle. The data not in bold
should be used for reference only.
2. We reserve the right to make changes in specifications and design without prior
notice.
74
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3. KM-515MAH
APPROXIMATE ICE
PRODUCTION PER 24 HR.
WATER TEMP. (ºF/ºC)
70/21
AMBIENT TEMP.
(ºF/ºC)
50/10
90/32
70/21
80/27
501
227
221
482
456
218
207
447
416
203
189
486
90/32
100/38
70/21
80/27
90/32
482
472
218
214
435
197
193
396
361
180
164
lbs./day kg./day
426
APPROXIMATE ELECTRIC
CONSUMPTION
980
1012
1055
1090
1095
1038
1071
1111
1130
1005
1012
1011
watts
100/38
70/21
80/27
90/32
APPROXIMATE WATER
CONSUMPTION PER 24 HR.
188
168
162
132
0.71
0.64
0.61
0.50
162
128
99
0.61
0.48
0.38
0.37
147
124
90
0.56
0.47
0.34
0.31
gal./day m3/day
100/38
70/21
80/27
90/32
100/38
70/21
97
82
FREEZING CYCLE TIME
26
27
27
28
4.4
27
30
32
33
3.9
30
33
35
37
3.8
min.
HARVEST CYCLE TIME
80/27
90/32
100/38
4.0
3.9
3.4
3.2
2.7
2.7
3.4
2.7
2.7
min.
HEAD PRESSURE
70/21
80/27
90/32
226
244
250
15.9
17.2
17.6
250
282
308
17.6
19.8
21.7
278
306
335
19.5
21.5
23.5
PSIG kg/cm2G
100/38
254
17.8
314
22.1
359
25.2
SUCTION PRESSURE
70/21
80/27
90/32
45
48
49
3.2
3.4
3.5
49
55
59
3.5
3.8
4.1
54
60
64
3.8
4.2
4.5
PSIG kg/cm2G
100/38
50
3.5
60
4.2
69
4.9
TOTAL HEAT OF REJECTION FROM CONDENSER
9,600 BTU/h [AT 90ºF (32ºC) / WT 70ºF (21ºC)]
Note:
1. Pressure data is recorded at 5 min. into freezing cycle. The data not in bold
should be used for reference only.
2. We reserve the right to make changes in specifications and design without prior
notice.
75
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4. KM-515MWH
APPROXIMATE ICE
PRODUCTION PER 24 HR.
WATER TEMP. (ºF/ºC)
70/21
AMBIENT TEMP.
(ºF/ºC)
50/10
90/32
70/21
80/27
500
486
227
220
481
457
218
207
465
445
211
202
90/32
100/38
481
481
218
218
436
433
198
196
422
409
191
186
lbs./day kg./day
APPROXIMATE ELECTRIC
CONSUMPTION
70/21
80/27
90/32
940
944
946
946
954
960
952
958
965
watts
100/38
70/21
946
961
970
APPROXIMATE WATER
CONSUMPTION PER 24 HR.
515
540
548
688
1.95
2.04
2.07
2.60
548
591
628
705
2.07
2.24
2.38
2.67
805
966
3.05
3.66
3.63
4.78
80/27
90/32
958
gal./day m3/day
100/38
1262
FREEZING CYCLE TIME
70/21
80/27
29
29
29
30
31
29
90/32
100/38
70/21
29
30
29
30
3.5
31
33
3.4
min.
HARVEST CYCLE TIME
3.8
80/27
90/32
3.6
3.5
3.0
2.7
3.1
2.7
min.
100/38
3.1
2.7
2.7
HEAD PRESSURE
70/21
80/27
90/32
270
271
271
19.0
19.0
19.0
271
272
273
19.0
19.1
19.2
274
276
277
19.3
19.4
19.5
PSIG kg/cm2G
100/38
272
19.1
274
19.3
280
19.7
SUCTION PRESSURE
70/21
80/27
90/32
50
51
52
3.5
3.6
3.6
52
54
56
3.6
3.8
3.9
56
59
61
3.9
4.2
4.3
PSIG kg/cm2G
100/38
53
3.7
57
4.0
65
4.6
TOTAL HEAT OF REJECTION FROM CONDENSER
8,300 BTU/h [AT 90ºF (32ºC) / WT 70ºF (21ºC)]
TOTAL HEAT OF REJECTION FROM COMPRESSOR
WATER FLOW FOR CONDENSER
1,300 BTU/h [AT 90ºF (32ºC) / WT 70ºF (21ºC)]
49 gal./h [AT 100ºF (38ºC) / WT 90ºF (32ºC)]
PRESSURE DROP OF COOLING WATER LINE
less than 10 PSIG
Note:
1. Pressure data is recorded at 5 min. into freezing cycle. The data not in bold
should be used for reference only.
2. We reserve the right to make changes in specifications and design without prior
notice.
76
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5. KM-515MRH
APPROXIMATE ICE
PRODUCTION PER 24 HR.
WATER TEMP. (ºF/ºC)
70/21
AMBIENT TEMP.
(ºF/ºC)
50/10
90/32
70/21
80/27
491
482
223
219
480
465
218
211
443
417
201
189
90/32
100/38
480
465
218
211
452
442
205
200
408
368
185
167
lbs./day kg./day
APPROXIMATE ELECTRIC
CONSUMPTION
70/21
80/27
90/32
1000
1020
1026
1031
1026
1061
1090
1097
1058
1091
1121
1150
watts
100/38
70/21
APPROXIMATE WATER
CONSUMPTION PER 24 HR.
198
175
168
0.75
0.66
0.64
168
128
94
0.64
0.48
0.36
153
128
88
0.58
0.49
0.33
80/27
90/32
gal./day m3/day
100/38
70/21
80/27
133
0.50
93
0.35
82
0.31
FREEZING CYCLE TIME
26
27
29
30
32
27
90/32
100/38
70/21
27
28
5.0
31
31
4.3
34
36
4.1
min.
HARVEST CYCLE TIME
80/27
90/32
4.5
4.3
3.4
2.7
3.6
2.7
min.
100/38
3.6
2.7
2.7
HEAD PRESSURE
70/21
80/27
90/32
216
230
234
15.2
16.1
16.4
234
257
277
16.4
18.1
19.5
252
272
294
17.7
19.1
20.6
PSIG kg/cm2G
100/38
235
16.6
281
19.8
309
21.7
SUCTION PRESSURE
70/21
80/27
90/32
47
49
50
3.3
3.5
3.5
50
54
57
3.5
3.8
4.0
52
54
58
3.6
3.8
4.1
PSIG kg/cm2G
100/38
50
3.5
57
4.0
59
4.1
TOTAL HEAT OF REJECTION FROM CONDENSER
8,500 BTU/h [AT 90ºF (32ºC) / WT 70ºF (21ºC)]
TOTAL HEAT OF REJECTION FROM COMPRESSOR
CONDENSER VOLUME
1,400 BTU/h [AT 90ºF (32ºC) / WT 70ºF (21ºC)]
43 CU. IN (URC-5F)
Note:
1. Pressure data is recorded at 5 min. into freezing cycle. The data not in bold
should be used for reference only.
2. We reserve the right to make changes in specifications and design without prior
notice.
77
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6. KM-600MAH
APPROXIMATE ICE
PRODUCTION PER 24 HR.
WATER TEMP. (ºF/ºC)
70/21
AMBIENT TEMP.
(ºF/ºC)
50/10
90/32
70/21
80/27
592
572
269
260
566
532
257
241
516
474
234
215
90/32
100/38
566
551
257
250
503
490
228
222
447
396
203
180
lbs./day kg./day
APPROXIMATE ELECTRIC
CONSUMPTION
70/21
80/27
90/32
1040
1073
1084
1073
1084
1142
1190
1191
1102
1137
1195
1200
watts
100/38
70/21
APPROXIMATE WATER
CONSUMPTION PER 24 HR.
259
223
212
0.98
0.84
0.80
212
150
99
0.80
0.57
0.38
191
154
92
0.72
0.58
0.35
80/27
90/32
gal./day m3/day
100/38
160
0.61
97
0.37
85
0.32
FREEZING CYCLE TIME
70/21
80/27
33
34
35
38
38
42
90/32
100/38
70/21
35
36
40
41
44
48
min.
HARVEST CYCLE TIME
4.2
3.6
3.4
80/27
90/32
3.7
3.6
2.7
2.0
2.9
2.0
min.
100/38
70/21
80/27
90/32
2.9
2.0
2.0
HEAD PRESSURE
238
254
259
16.7
17.9
18.2
259
287
310
18.2
20.2
21.8
290
319
342
20.4
22.4
24.1
PSIG kg/cm2G
100/38
70/21
80/27
90/32
100/38
266
55
56
56
57
18.7
3.9
3.9
4.0
4.0
318
56
58
59
59
22.3
4.0
4.0
4.1
4.2
372
58
60
61
62
26.2
4.1
4.2
4.3
4.4
SUCTION PRESSURE
PSIG kg/cm2G
TOTAL HEAT OF REJECTION FROM CONDENSER
9,500 BTU/h [AT 90ºF (32ºC) / WT 70ºF (21ºC)]
Note:
1. Pressure data is recorded at 5 min. into freezing cycle. The data not in bold
should be used for reference only.
2. We reserve the right to make changes in specifications and design without prior
notice.
78
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7. KM-650MAH
APPROXIMATE ICE
PRODUCTION PER 24 HR.
WATER TEMP. (ºF/ºC)
70/21
AMBIENT TEMP.
(ºF/ºC)
50/10
90/32
70/21
80/27
661
639
300
290
632
594
287
269
591
553
268
251
90/32
100/38
632
624
287
283
562
552
255
250
520
482
236
219
lbs./day kg./day
APPROXIMATE ELECTRIC
CONSUMPTION
70/21
80/27
90/32
1180
1205
1212
1218
1212
1255
1290
1299
1250
1289
1326
1360
watts
100/38
70/21
APPROXIMATE WATER
CONSUMPTION PER 24 HR.
232
203
194
0.88
0.77
0.73
194
143
101
0.73
0.54
0.38
172
139
89
0.65
0.53
0.34
80/27
90/32
gal./day m3/day
100/38
149
0.56
98
0.37
78
0.30
FREEZING CYCLE TIME
70/21
80/27
29
30
31
34
34
36
90/32
100/38
70/21
31
32
36
36
38
41
min.
HARVEST CYCLE TIME
3.5
3.1
2.9
80/27
90/32
3.2
3.1
2.5
2.0
2.6
2.0
min.
100/38
70/21
80/27
90/32
2.6
2.0
2.0
HEAD PRESSURE
232
248
252
16.3
17.4
17.8
252
280
302
17.8
19.7
21.3
280
307
331
19.7
21.6
23.2
PSIG kg/cm2G
100/38
70/21
80/27
90/32
100/38
258
50
18.1
3.5
3.6
3.7
3.7
309
52
56
58
21.7
3.7
3.9
4.1
4.1
357
55
58
61
64
25.1
3.9
4.1
4.3
4.5
SUCTION PRESSURE
52
52
53
PSIG kg/cm2G
59
TOTAL HEAT OF REJECTION FROM CONDENSER
11,100 BTU/h [AT 90ºF (32ºC) / WT 70ºF (21ºC)]
Note:
1. Pressure data is recorded at 5 min. into freezing cycle. The data not in bold
should be used for reference only.
2. We reserve the right to make changes in specifications and design without prior
notice.
79
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8. KM-650MWH
APPROXIMATE ICE
PRODUCTION PER 24 HR.
WATER TEMP. (ºF/ºC)
70/21
AMBIENT TEMP.
(ºF/ºC)
50/10
90/32
70/21
80/27
661
652
300
296
649
633
294
287
616
591
280
268
90/32
100/38
649
637
294
289
620
611
281
277
581
546
264
248
lbs./day kg./day
APPROXIMATE ELECTRIC
CONSUMPTION
70/21
80/27
90/32
1080
1076
1074
1086
1074
1066
1060
1066
1092
1098
1086
1110
watts
100/38
70/21
APPROXIMATE WATER
CONSUMPTION PER 24 HR.
744
775
784
2.81
2.93
2.97
784
838
882
2.97
3.17
3.34
1169
1405
1380
4.42
5.32
5.22
80/27
90/32
gal./day m3/day
100/38
985
3.73
999
3.78
1838
6.96
FREEZING CYCLE TIME
70/21
80/27
28
28
29
30
31
32
90/32
100/38
70/21
29
29
30
31
33
35
min.
HARVEST CYCLE TIME
4.0
3.5
3.3
80/27
90/32
3.7
3.5
2.9
2.4
2.9
2.3
min.
100/38
70/21
80/27
90/32
3.0
2.4
2.1
HEAD PRESSURE
239
239
239
16.8
16.8
16.8
239
240
240
16.8
16.9
16.9
246
250
249
17.3
17.6
17.5
PSIG kg/cm2G
100/38
70/21
80/27
90/32
100/38
243
46
47
47
48
17.1
3.2
3.3
3.3
3.4
242
47
48
49
50
17.0
3.3
3.4
3.5
3.5
257
50
52
53
56
18.1
3.5
3.7
3.7
4.0
SUCTION PRESSURE
PSIG kg/cm2G
TOTAL HEAT OF REJECTION FROM CONDENSER
9,500 BTU/h [AT 90ºF (32ºC) / WT 70ºF (21ºC)]
1,600 BTU/h [AT 90ºF (32ºC) / WT 70ºF (21ºC)]
73 gal./h [AT 100ºF (38ºC) / WT 90ºF (32ºC)]
TOTAL HEAT OF REJECTION FROM COMPRESSOR
WATER FLOW FOR CONDENSER
PRESSURE DROP OF COOLING WATER LINE
less than 10 PSIG
Note:
1. Pressure data is recorded at 5 min. into freezing cycle. The data not in bold
should be used for reference only.
2. We reserve the right to make changes in specifications and design without prior
notice.
80
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9. KM-650MWH-M
AWAITING DATA
Note:
1. Pressure data is recorded at 5 min. into freezing cycle. The data not in bold
should be used for reference only.
2. We reserve the right to make changes in specifications and design without prior
notice.
81
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10. KM-650MRH
APPROXIMATE ICE
PRODUCTION PER 24 HR.
WATER TEMP. (ºF/ºC)
70/21
AMBIENT TEMP.
(ºF/ºC)
50/10
90/32
70/21
80/27
632
617
287
280
612
586
278
266
574
541
260
246
90/32
100/38
612
601
278
272
564
554
256
251
521
482
236
219
lbs./day kg./day
APPROXIMATE ELECTRIC
CONSUMPTION
70/21
80/27
90/32
1220
1242
1249
1251
1249
1288
1320
1326
1278
1311
1346
1370
watts
100/38
70/21
APPROXIMATE WATER
CONSUMPTION PER 24 HR.
267
228
216
160
1.01
0.86
0.82
0.61
216
149
93
0.82
0.56
0.35
0.35
195
155
88
0.74
0.59
0.33
0.31
80/27
90/32
gal./day m3/day
100/38
92
82
FREEZING CYCLE TIME
70/21
80/27
30
31
32
33
34
36
90/32
100/38
70/21
32
32
35
35
37
39
min.
HARVEST CYCLE TIME
4.1
3.5
3.3
80/27
90/32
3.7
3.5
2.7
2.1
2.9
2.1
min.
100/38
70/21
3.0
2.1
2.1
HEAD PRESSURE
211
14.9
231
16.3
253
17.8
80/27
90/32
100/38
227
231
234
15.9
16.3
16.5
258
280
285
18.1
19.7
20.0
277
301
320
19.5
21.1
22.5
PSIG kg/cm2G
SUCTION PRESSURE
70/21
80/27
90/32
51
52
53
3.6
3.7
3.7
53
55
56
3.7
3.8
3.9
56
58
59
3.9
4.1
4.2
PSIG kg/cm2G
100/38
54
3.8
57
4.0
62
4.4
TOTAL HEAT OF REJECTION FROM CONDENSER
TOTAL HEAT OF REJECTION FROM COMPRESSOR
CONDENSER VOLUME
9600 BTU/h [AT 90ºF (32ºC) / WT 70ºF (21ºC)]
1500 BTU/h [AT 90ºF (32ºC) / WT 70ºF (21ºC)]
40 CU. IN (URC-5F)
Note:
1. Pressure data is recorded at 5 min. into freezing cycle. The data not in bold
should be used for reference only.
2. We reserve the right to make changes in specifications and design without prior
notice.
82
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11. KM-901MAH
APPROXIMATE ICE
PRODUCTION PER 24 HR.
WATER TEMP. (ºF/ºC)
70/21
AMBIENT TEMP.
(ºF/ºC)
50/10
90/32
70/21
80/27
874
396
382
832
778
378
353
785
736
356
334
842
90/32
100/38
70/21
80/27
90/32
832
826
378
375
732
332
327
687
646
312
293
lbs./day kg./day
721
APPROXIMATE ELECTRIC
CONSUMPTION
1600
1625
1632
1631
1632
1675
1710
1715
1658
1691
1731
1750
watts
100/38
70/21
80/27
90/32
APPROXIMATE WATER
CONSUMPTION PER 24 HR.
240
219
212
175
0.91
0.83
0.80
0.66
212
175
143
139
0.80
0.66
0.54
0.52
187
158
123
103
0.71
0.60
0.46
0.39
gal./day m3/day
100/38
70/21
80/27
90/32
100/38
70/21
FREEZING CYCLE TIME
19
20
20
21
4.3
20
22
24
24
3.9
22
24
26
27
3.6
min.
HARVEST CYCLE TIME
80/27
90/32
100/38
4.0
3.9
3.3
3.3
2.8
2.7
3.1
2.6
2.4
min.
HEAD PRESSURE
70/21
80/27
90/32
219
234
238
15.4
16.4
16.7
238
263
284
16.7
18.5
20.0
261
284
306
18.3
20.0
21.5
PSIG kg/cm2G
100/38
242
17.0
289
20.3
327
23.0
SUCTION PRESSURE
70/21
80/27
90/32
35
36
37
2.5
2.6
2.6
37
39
41
2.6
2.7
2.9
41
44
46
2.9
3.1
3.2
PSIG kg/cm2G
100/38
38
2.7
42
3.0
50
3.5
TOTAL HEAT OF REJECTION FROM CONDENSER
15,400 BTU/h [AT 90ºF (32ºC) / WT 70ºF (21ºC)]
Note:
1. Pressure data is recorded at 5 min. into freezing cycle. The data not in bold
should be used for reference only.
2. We reserve the right to make changes in specifications and design without prior
notice.
83
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12. KM-901MWH
APPROXIMATE ICE
PRODUCTION PER 24 HR.
WATER TEMP. (ºF/ºC)
70/21
AMBIENT TEMP.
(ºF/ºC)
50/10
90/32
70/21
80/27
912
893
414
405
887
854
402
388
849
815
385
370
90/32
100/38
887
878
402
398
827
818
375
371
787
751
357
341
lbs./day kg./day
APPROXIMATE ELECTRIC
CONSUMPTION
70/21
80/27
90/32
1480
1496
1501
1501
1528
1550
1527
1553
1576
watts
100/38
70/21
1505
1556
1600
APPROXIMATE WATER
CONSUMPTION PER 24 HR.
876
978
3.32
3.70
3.82
5.13
1010
1186
1332
1482
3.82
4.49
5.04
5.61
1530
1893
1971
2559
5.79
7.17
7.46
9.69
80/27
90/32
1010
1355
gal./day m3/day
100/38
FREEZING CYCLE TIME
70/21
80/27
18
19
19
20
21
19
90/32
100/38
70/21
19
19
4.1
20
20
3.8
21
22
3.6
min.
HARVEST CYCLE TIME
80/27
90/32
3.9
3.8
3.4
3.1
3.3
2.9
min.
100/38
3.4
3.0
2.7
HEAD PRESSURE
70/21
80/27
90/32
227
229
230
16.0
16.1
16.1
230
233
236
16.1
16.4
16.6
240
247
249
16.9
17.4
17.5
PSIG kg/cm2G
100/38
234
16.4
239
16.8
260
18.3
SUCTION PRESSURE
70/21
80/27
90/32
33
34
34
2.3
2.4
2.4
34
36
37
2.4
2.5
2.6
38
40
41
2.6
2.8
2.9
PSIG kg/cm2G
100/38
36
2.5
38
2.7
45
3.2
TOTAL HEAT OF REJECTION FROM CONDENSER
13,500 BTU/h [AT 90ºF (32ºC) / WT 70ºF (21ºC)]
TOTAL HEAT OF REJECTION FROM COMPRESSOR
WATER FLOW FOR CONDENSER
2,100 BTU/h [AT 90ºF (32ºC) / WT 70ºF (21ºC)]
100 gal./h [AT 100ºF (38ºC) / WT 90ºF (32ºC)]
PRESSURE DROP OF COOLING WATER LINE
less than 10 PSIG
Note:
1. Pressure data is recorded at 5 min. into freezing cycle. The data not in bold
should be used for reference only.
2. We reserve the right to make changes in specifications and design without prior
notice.
84
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13. KM-901MRH
APPROXIMATE ICE
PRODUCTION PER 24 HR.
WATER TEMP. (ºF/ºC)
70/21
AMBIENT TEMP.
(ºF/ºC)
50/10
90/32
70/21
80/27
889
866
403
393
859
818
389
371
803
755
364
343
90/32
100/38
859
843
389
382
785
771
356
350
724
668
328
303
lbs./day kg./day
APPROXIMATE ELECTRIC
CONSUMPTION
70/21
80/27
90/32
1590
1630
1643
1630
1643
1712
1770
1771
1664
1705
1775
1780
watts
100/38
70/21
APPROXIMATE WATER
CONSUMPTION PER 24 HR.
246
225
219
0.93
0.85
0.83
219
182
152
0.83
0.69
0.57
194
165
131
0.74
0.63
0.50
80/27
90/32
gal./day m3/day
100/38
70/21
80/27
182
0.69
147
0.56
112
0.42
FREEZING CYCLE TIME
18
20
21
21
23
19
90/32
100/38
70/21
20
20
4.3
22
23
3.9
24
26
3.6
min.
HARVEST CYCLE TIME
80/27
90/32
4.0
3.9
3.4
2.9
3.2
2.7
min.
100/38
3.4
2.8
2.4
HEAD PRESSURE
70/21
80/27
90/32
208
224
229
14.6
15.7
16.1
229
256
279
16.1
18.0
19.6
252
277
301
17.7
19.5
21.2
PSIG kg/cm2G
100/38
232
16.3
284
20.0
322
22.6
SUCTION PRESSURE
70/21
80/27
90/32
35
37
37
2.5
2.6
2.6
37
40
43
2.6
2.8
3.0
41
45
47
2.9
3.1
3.3
PSIG kg/cm2G
100/38
38
2.7
44
3.1
51
3.6
TOTAL HEAT OF REJECTION FROM CONDENSER
14,000 BTU/h [AT 90ºF (32ºC) / WT 70ºF (21ºC)]
TOTAL HEAT OF REJECTION FROM COMPRESSOR
CONDENSER VOLUME
2,200 BTU/h [AT 90ºF (32ºC) / WT 70ºF (21ºC)]
121 CU. IN (URC-9F)
Note:
1. Pressure data is recorded at 5 min. into freezing cycle. The data not in bold
should be used for reference only.
2. We reserve the right to make changes in specifications and design without prior
notice.
85
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14. KM-901MRH3
APPROXIMATE ICE
PRODUCTION PER 24 HR.
WATER TEMP. (ºF/ºC)
70/21
AMBIENT TEMP.
(ºF/ºC)
50/10
90/32
70/21
80/27
899
880
408
399
874
842
397
382
817
772
371
350
90/32
100/38
874
855
397
388
815
800
370
363
749
689
340
313
lbs./day kg./day
APPROXIMATE ELECTRIC
CONSUMPTION
70/21
80/27
90/32
1670
1706
1717
1716
1717
1779
1830
1837
1755
1803
1861
1890
watts
100/38
70/21
APPROXIMATE WATER
CONSUMPTION PER 24 HR.
254
230
222
0.96
0.87
0.84
222
181
147
0.84
0.69
0.56
203
174
134
0.77
0.66
0.51
80/27
90/32
gal./day m3/day
100/38
70/21
80/27
185
0.70
144
0.54
123
0.46
FREEZING CYCLE TIME
19
20
21
21
23
20
90/32
100/38
70/21
20
20
4.4
22
23
3.9
24
26
3.6
min.
HARVEST CYCLE TIME
80/27
90/32
4.0
3.9
3.3
2.8
3.2
2.6
min.
100/38
3.4
2.7
2.4
HEAD PRESSURE
70/21
80/27
90/32
206
220
225
14.5
15.5
15.8
225
249
270
15.8
17.5
19.0
248
272
293
17.5
19.1
20.6
PSIG kg/cm2G
100/38
229
16.1
275
19.4
315
22.1
SUCTION PRESSURE
70/21
80/27
90/32
36
37
38
2.5
2.6
2.7
38
40
42
2.7
2.8
3.0
41
44
46
2.9
3.1
3.2
PSIG kg/cm2G
100/38
39
2.7
43
3.0
49
3.4
TOTAL HEAT OF REJECTION FROM CONDENSER
14,100 BTU/h [AT 90ºF (32ºC) / WT 70ºF (21ºC)]
TOTAL HEAT OF REJECTION FROM COMPRESSOR
CONDENSER VOLUME
2,200 BTU/h [AT 90ºF (32ºC) / WT 70ºF (21ºC)]
121 CU. IN (URC-9F)
Note:
1. Pressure data is recorded at 5 min. into freezing cycle. The data not in bold
should be used for reference only.
2. We reserve the right to make changes in specifications and design without prior
notice.
86
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C. Wiring Diagrams
1. Diagrams Without Harvest Pump Timer Relays
a) KM-320M_H, KM-515M_H, KM-600MAH
*
87
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b) KM-650MAH, KM-650MWH, KM-901MAH, KM-901MWH
*
88
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c) KM-650MRH, KM-901MRH
*
89
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d) KM-901MRH3
*
90
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2. Diagrams With Harvest Pump Timer Relays
a) KM-515MAH
*
91
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b) KM-650MAH, KM-650MWH, KM-901MAH
*
92
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c) KM-650MWH-M
*
93
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d) KM-650MRH
*
94
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