Service Manual
Modular Crescent Cuber
Models
KM-901MAJ, MWJ, MRJ/3
KM-1100MAJ, MWJ, MRJ
KM-1340MAJ, MWJ, MRJ/3
KM-1601MRJ/3
hoshizakiamerica.com
Number: 73213
Issued: 1-30-2018
Revision: 3-13-2018
WARNING
Only qualied service technicians should install and service the appliance. To
obtain the name and phone number of your local Hoshizaki Certied Service
Representative, visit www.hoshizaki.com. No service should be undertaken until
the technician has thoroughly read this Service Manual. Failure to service and
maintain the appliance in accordance with this manual will adversely affect safety,
performance, component life, and warranty coverage. Proper installation is the
responsibility of the installer. Product failure or property damage due to improper
installation is not covered under warranty.
Hoshizaki provides this manual primarily to assist qualied service technicians in the
service of the appliance.
Should the reader have any questions or concerns which have not been satisfactorily
addressed, please call, send an e-mail message, or write to the Hoshizaki Technical
Support Department for assistance.
Phone: 1-800-233-1940; (770) 487-2331
Fax: 1-800-843-1056; (770) 487-3360
E-mail: techsupport@hoshizaki.com
618 Highway 74 South
Peachtree City, GA 30269
Attn: Hoshizaki Technical Support Department
Web Site: www.hoshizaki.com
NOTE: To expedite assistance, all correspondence/communication MUST include the
following information:
• Model Number
• Serial Number
• Complete and detailed explanation of the problem.
2
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 ................................................................................................. 5
I. Construction and Water/Refrigeration Circuit Diagram ....................................................... 7
A. Construction .................................................................................................................. 7
1. Air-Cooled Models (MAJ) ......................................................................................... 7
2. Water-Cooled Models (MWJ) ................................................................................... 8
3. Remote Models (MRJ/3) .......................................................................................... 9
B. Water/Refrigeration Circuit Diagram ............................................................................ 10
1. Air-Cooled Models (MAJ) ....................................................................................... 10
2. Water-Cooled Models (MWJ) ..................................................................................11
3. Remote Models (MRJ/3) ........................................................................................ 12
II. Sequence of Operation and Service Diagnosis ............................................................... 13
A. Sequence of Operation Flow Chart ............................................................................. 13
B. Service Diagnosis ....................................................................................................... 16
C. Freeze-Time Correction Cycle (90 min.) ..................................................................... 23
D. Control Board Check ................................................................................................... 25
E. Bin Control Check ....................................................................................................... 26
F. Float Switch Check and Cleaning ................................................................................ 27
1. Float Switch Check ................................................................................................ 27
2. Float Switch Cleaning ............................................................................................ 28
G. Thermistor Check ........................................................................................................ 29
H. Control Switch ............................................................................................................. 29
I. Diagnostic Tables .......................................................................................................... 30
J. Freeze-Up Check List .................................................................................................. 34
III. Controls and Adjustments ............................................................................................... 35
A. Control Board Layout .................................................................................................. 36
B. LED Lights and Audible Alarm Safeties ....................................................................... 37
C. Settings and Adjustments ............................................................................................ 38
1. Default Dip Switch Settings .................................................................................... 38
2. Harvest Timer (S4 dip switch 1 & 2) ...................................................................... 39
3. Pump-Out Timer/Harvest Time During Pump-Out (S4 dip switch 3 & 4) ............... 39
4. Pump-Out Frequency Control (S4 dip switch 5) ..................................................... 40
5. Harvest Pump Time (Harvest Assist) (S4 dip switch 6) ......................................... 40
6. Harvest Pump Time (Harvest Assist)/Freeze-Time Correction (S4 dip switch 7) .. 41
7. Factory Use (S4 dip switch 8)................................................................................. 41
8. Freeze Timer (S4 dip switch 9 & 10) ...................................................................... 42
9. Float Switch Selector (S5 dip switch 1) ................................................................. 42
10. Rell Counter (S5 dip switch 2 and 3) .................................................................. 42
11. Minimum Harvest Time (S5 dip switch 4) ............................................................. 43
12. Anti-Slush (S5 dip switch 5) ................................................................................. 43
D. Control Switch ............................................................................................................. 43
3
IV. Refrigeration Circuit and Component Service Information.............................................. 44
A. Refrigeration Circuit Service Information .................................................................... 44
B. Component Service Information .................................................................................. 47
C. Water Regulating Valve Adjustment (water-cooled model) .......................................... 47
V. Maintenance .................................................................................................................... 48
VI. Preparing the Appliance for Periods of Non-Use ............................................................ 49
VII. Disposal ......................................................................................................................... 51
VIII. Technical Information .................................................................................................... 52
A. Specication and Performance Data Sheets ............................................................... 52
1. KM-901MAJ ............................................................................................................ 52
2. KM-901MWJ .......................................................................................................... 53
3. KM-901MRJ with URC-14F ................................................................................... 54
4. KM-901MRJ3 with URC-14F ................................................................................. 55
5. KM-1100MAJ ......................................................................................................... 56
6. KM-1100MWJ ........................................................................................................ 57
7. KM-1100MRJ with URC-14F .................................................................................. 58
8. KM-1340MAJ ......................................................................................................... 59
9. KM-1340MWJ ........................................................................................................ 60
10. KM-1340MRJ with URC-14F ............................................................................... 61
11. KM-1340MRJ3 with URC-14F .............................................................................. 62
12. KM-1601MRJ with URC-22F ................................................................................ 63
13. KM-1601MRJ3 with URC-22F .............................................................................. 64
B. Wiring Diagrams ......................................................................................................... 65
1. KM-901M_J, KM-1100M_J ..................................................................................... 65
2. KM-1340M_J and KM-1601MRJ ............................................................................ 66
3. KM-1340MRJ3 and KM-1601MRJ3 ....................................................................... 67
4
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 Indicates a hazardous situation which could result in death or
serious injury.
NOTICE Indicates a situation which could result in damage to the
appliance or property.
IMPORTANT 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 re, follow basic
precautions including the following:
• Only qualied service technicians should install and service this appliance.
• The appliance must be installed in accordance with applicable national, state, and
local codes and regulations.
• 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, re, or severe damage to equipment.
• The icemaker requires an independent power supply of proper capacity. See the
nameplate for electrical specications. 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 re.
• THE ICEMAKER MUST BE GROUNDED. Failure to properly ground the icemaker
could result in death or serious injury.
• Move the control switch to the "OFF" position and turn off the power supply before
servicing. 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, re, or damage to the unit.
• 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.
5
WARNING, continued
• 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 ammable substances near the
appliance. They might catch re.
• 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 connection 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 oor
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 icemaker on during extended periods of non-use, extended
absences, or in sub-freezing temperatures. To properly prepare the icemaker 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.
6
I. Construction and Water/Refrigeration Circuit Diagram
A. Construction
1. Air-Cooled Models (MAJ)
Spray Tubes
Inlet Water Valve
Cleaning Valve
Control Switch
Hot Gas Valve
Water Supply Inlet
Thermostatic
Expansion Valve
Condenser
Fan Motor
Float Switch
Water Pump
Control Box
Compressor
Model Shown: KM-901MAJ
High-Pressure
Switch
Drier
Liquid Line Valve
7
2. Water-Cooled Models (MWJ)
Spray Tubes
Inlet Water Valve
Cleaning Valve
Control Switch
Float Switch
Hot Gas Valve
Water Supply Inlet
Thermostatic
Expansion Valve
Water
Regulating
Valve
Condenser
Water Pump
Control Box
Compressor
High-Pressure Switch
Drier
Liquid Line Valve
Model Shown: KM-1100MWJ
8
3. Remote Models (MRJ/3)
Spray Tubes
Inlet Water Valve
Cleaning Valve
Control Switch
Hot Gas Valve
Water Supply Inlet
Junction Boxes
Thermostatic
Expansion Valves
Control Box
Float Switch
Water Pump
Crankcase
Heater
Receiver Tank
Main Transformer
Drier
Liquid Line Valve
Compressor
Model Shown: KM-1601MRJ
9
B. Water/Refrigeration Circuit Diagram
1. Air-Cooled Models (MAJ)
Spray Tubes
Inlet Water Valve
Condenser
Drier
Water Supply
Float Switch
Drain
Water
Tank
Evaporator
Thermistor
Water Pump
Pump Out
Freeze
Fan
Liquid Line Valve
Heat
Exchanger
Suction Line
Compressor
High-Pressure
Switch
Strainer
Hot Gas
Val ve
Discharge Line
Refrigeration Circuit
Water Circuit
Thermostatic Expansion Valve
Check Valve
10
2. Water-Cooled Models (MWJ)
Spray Tubes
Inlet Water Valve
Water Regulating Valve
Condenser
Water Supply
Float Switch
Drain
Water
Tank
Evaporator
Thermistor
Water Pump
Pump Out
Freeze
Liquid Line Valve
Heat
Exchanger
Suction Line
Compressor
Drier
High-Pressure
Switch
Strainer
Hot Gas
Val ve
Discharge Line
Refrigeration Circuit
Water Circuit
Thermostatic Expansion Valve
Check Valve
11
3. Remote Models (MRJ/3)
Inlet Water Valve
Condenser
Fan
Headmaster
(C.P.R.)
Spray Tubes
Access
Val ve
Water Supply
Cleaning Valve
Float Switch
Drain
Water
Tank
Thermistor
Water Pump
Freeze Pump-Out
Receiver
Evaporator
Liquid Line
Val ve
Heat
Exchanger
Suction Line
Compressor
Drier
High-Pressure
Switch
Strainer
Hot Gas
Val ve
Check Valves
Discharge Line
Refrigeration Circuit
Water Circuit
Thermostatic Expansion
Val ve
Check Valve
12
II. Sequence of Operation and Service Diagnosis
A. Sequence of Operation Flow Chart
1. Operation Flow Chart
cycle
(S4 dip switch 5)
2 sec., then reverses for
10/20 sec.
• Pump motor stops for
(S4 dip switch 3 & 4)
FS in control
Comp energized
FM*/FMR energized
HGV energized
PM de-energizes for 2 sec.,
then reverses for 10/20 sec.
FM* de-energized
LLV de-energized
CB: 2A7664-02
When freeze time differential exceeded,
FS opens or freeze
timer terminates
Anti-Slush
Thermistor temperature
reaches 36°F (2.2°C)
(5.8 kΩ).
PM de-energized for
10 sec.
• Factory set for every 10th
4. Pump-Out Cycle
freeze-time correction cycle starts.
See "II.A.3. Freeze-Time Correction Chart."
FS closed
50 sec.
Comp energized
FM energized
FMR energized
PM energized
LLV energized
HGV de-energized
FS check
FS open
3. Freeze Cycle
• Min. freeze time: 5 min.
• Max. freeze time: freeze timer setting (S4
dip switch 9 & 10).
5-min.
minimum
freeze timer in
Harvest Pump
control
Time
Operation Flow Chart
PM energized
WV de-energized
FS closed
Thermistor temperature reaches
Comp energized
FM*/FMR energized
48°F (9°C) (3.9 kΩ or less). Harvest
HGV energized
FM* – FM energized in 2. Harvest Cycle and
4. Pump-Out Cycle when connected to CB K1
timer starts.
WV energized
connector pin #9.
Components Energized when the Control Switch is in the "WASH" Position
The "WASH" position on the control switch is used when cleaning and sanitizing the unit. When in the "WASH" position, power is supplied
to the pump motor. With the cleaning valve closed, the cleaner and sanitizer ow over the outside of the evaporator plate assembly. With the
cleaning valve open, the cleaner and sanitizer ow over both the outside and the inside of the evaporator plate assembly.
Note: Close the cleaning valve after cleaning and sanitizing are complete, otherwise the unit will not restart when the control
switch is placed in the "ICE" position.
• WV time: 6 min. or the length of harvest minus HPT
2. Harvest Cycle
1 to 3-min. harvest timer in
control (S4 dip switch 1 & 2)
Thermistor
in control
setting (S4 dip switch 6), whichever is shorter.
• Max. harvest time: 20 min.
WV energized
13
FS open
If FS is open, Comp stops and cycle
returns to 1-Min. ll.
Legend:
BC–bin control
CB–control board
Comp–compressor
FM*–fan motor
FMR–fan motor-remote
FS–oat switch
HGV–hot gas valve
HPT–harvest pump time
LLV –liquid line valve
PM–pump motor
WV–inlet water valve
Fill Cycle
FS check
1. 1-Minute
Cycle
Steps
Startup
2. Shutdown Flow Chart
3. Ice Level Lowered
2. Icemaker Off
Icemaker starts at
All components
"1. 1-Minute Fill Cycle."
de-energized.
To 1. 1-Minute Fill Cycle
BC closed
(BC actuator paddle disengaged)
Green "BC CLOSED" LED on
Yellow "BC OPEN" LED off
Yellow "BC OPEN" LED continues. All
components de-energized.
Shutdown Flow Chart
Control board 2A7664-02 retains freeze-time correction
count data between bin control restarts.
to 15 sec. into the freeze cycle if
activated at the end of the harvest cycle.
15 sec. before the 5-min. short cycle protection
timer terminates. Otherwise, at the end of the next
harvest cycle.
• Freeze Cycle–15 sec. after activation if activated at least
BC open (BC actuator paddle engaged)
Green "BC CLOSED" LED off
Yellow "BC OPEN" LED on
BC Operation
Legend:
BC–bin control
1. Bin Full
Shutdown
Shutdown Delay:
and Restart
• Fill Cycle–15 sec. after activation.
• Harvest Cycle–At the end of the harvest cycle, or up
14
3. Freeze-Time Correction Chart
Overow
2. 10-Minute Fill/
WV energized
Comp de-energized
FMR de-energized
HGV de-energized
PM de-energized
After 5th 10-Minute Harvest Pump Cycle with WV
Freeze-Time Correction Cycle Complete.
Go to Step "3. Freeze Cycle" in Operation Flow Chart.
step 1 for 5th and nal time.
• Do not adjust S4 dip switch 7 out of the factory position.
• After step 2 completes 4th sequence (80 min. completed), repeat
1. 10-Minute Harvest Cycle with WV
Comp energized
FMR energized
HGV energized
PM energized
WV energized
2A7664-02 Freeze-Time Correction Flow Chart
Cycle Steps
Steps 1 and 2 repeat
4 times (total 80 min.),
then step 1 repeats for
a 5th time to complete
Freeze-Time Correction
Start
Legend:
Comp–compressor
FM–fan motor
FMR–fan motor-remote
HGV–hot gas valve
PM–pump motor
WV–inlet water valve
Appliance Cycle Reset and Alarm Reset:
Cycle Reset: Power Supply or Control Switch Turned Off and On again:
Appliance turns off, then re-starts at 1.Fill Cycle.
Alarm Reset: CB "ALARM RESET" pressed during or after a freeze-time
correction cycle with power supply on:
Appliance continues cycle with no interruption or reset.
CB red "POWER OK" LED blinking:
CB red "POWER OK" LED resets to solid.
CB yellow "EXT HARVEST" LED blinking:
Cycle.
Differential
Value in Sec.
3 254
4 309
5 349
6 380
7 406
8 427
9 446
10 462
CB yellow "EXT HARVEST: LED turns off.
Number of
Freeze Time Differential Exceeded.
Minimum and Maximum Freeze times have
exceeded differential parameters.
Freeze-Time Correction function is enabled
when S4 Dip Switch 7 is in the "ON" position.
CB monitors freeze time. After 3freeze
cycles, CB compares the minimum and
maximum differential of the 3 freeze cycle
times. Every freeze cycle time after the third
freeze cycle time is added to the minimum/
maximum calculation.
Example: After 8 cycles, if the differential
between the shortest cycle (minimum) and
the longest cycle (maximum) is equal to or
greater than 427 sec. a freeze-time correction
cycle is initiated:
Freeze Cycles
Note: When 1st freeze-time correction cycle
is initiated, CB "POWER OK" LED starts
blinking. On 2nd freeze-time correction cycle,
if CB "POWER OK" LED has been reset,
CB "POWER OK" LED starts blinking. If CB
"POWER OK" had not been reset after 1st
freeze-time correction cycle CB "POWER
OK" LED continues to blink.
After 3rd freeze-time correction cycle in
36hours, CB yellow "EXT HARVEST" LED
starts blinking.
Appliance continues to operate and LEDs
continue to blink until ALARM RESET button
is pressed with power on.
15
B. Service Diagnosis
WARNING
• The appliance should be diagnosed and repaired only by qualied service
personnel to reduce the risk of death, electric shock, serious injury, or re.
• 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.D. Control
Board Check." Check dip switch settings to assure that S4 dip switches and S5 dip
switches 1 through 5 are in the factory default position. S4 dip switch 1, 2, 3, 4, and 5 are
cleaning adjustments and the settings are exible. For factory default settings,
see "III.C.1. Default Dip Switch Settings."
Note: • On 208-230/60/1 models with main transformer and 208-230/60/3 models,
the appliance neutral (W) is provided through the main transformer. To conrm
a good neutral, check for 60VAC from white (W) neutral to ground (GND).
If60VAC is present, neutral is good. If 60VAC is not present, check 208-230VAC
main power supply to main transformer. If 208-230VAC is present, check main
transformer continuity.
• When checking voltage from the CB K1 connector (10 pin connector), pull
CBK1connector 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 bulb.
2) Check that BC is closed and the 115VAC 10A fuse is good.
16
1. Sequence and Component 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 CB green "BC CLOSED" LED
turn on. If CB yellow "BC OPEN" LED is on (indicating a full bin), check CB K4 red
jumper. Move ice away from BC bulb.
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.D. Control Board Check."
• Conrm CB green "BC CLOSED" LED is on. If CB yellow "BC OPEN" LED is on,
conrm CB K4 jumper is in place. Otherwise, CB yellow "BC OPEN" LED is on
and appliance will not start.
a) Power On Diagnosis: If CB red "POWER OK" LED is off, conrm 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). If115VAC 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 tting.
Conrm 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.
17
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, FM*, FMR energized), continue to step 5a. If FS is open, WV remains energized
until 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 lters 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. Ifopen, replace WV. If the water tank lls, but the appliance fails to
start harvest (Comp energized), check for open FS. See "II.F. 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,
FM* (if connected to CB K1 connector pin #9), FMR, HGV, and X10 relay energize.
CBmonitors 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 and S5 dip
switch 4). WV and X11 relay are energized during harvest for a maximum of 6 min. or
the length of harvest minus HPT setting (S4 dip switch 6), whichever is shorter. See
step 5b below.
a) Comp Diagnosis: Check that evaporator is warming. Ifnot, conrm 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). If115VAC 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, conrm 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).
If115VAC 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: Conrm that LLV is de-energized and closed (not bypassing).
Ifenergized, replace CB. If de-energized and bypassing, replace LLV.
d) WRV Diagnosis: Conrm WRV is not leaking by. If WRV is leaking by, conrm HGV
is open and LLV is closed. Next, check for proper refrigerant pressures. If refrigerant
pressures are correct, adjust or replace WRV. See "IV.C. Water Regulating Valve
Adjustment (water-cooled models).
18
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 and S5 dip switch 4). When WV de-energizes,
LED 4 turns off, X11 relay de-energizes and LED 3 turns on. PM energizes. Comp, FM*,
FMR, HGV, and X10 relay continue.
Diagnosis: Place a thermometer on the suction line next to the thermistor. Has it
warmed to 48°F (9°C) or warmer? Conrm thermistor status. See "II.G. Thermistor
Check." If the thermistor reading is in proper range, dip switch 7 is on, and PM does
not energize before harvest terminates, replace CB. If WV continues, check for 115VAC
at CB K1 #6 (O). If115VAC is present, and LED 4 is off, replace CB. If LED 3is on
and PM is not energized, check for 115VAC at CB K1 #5(DBU). If115VAC is not
present, replace CB. If 115VAC is present and PM is not energized, check for 115VAC
at X10relay 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
X10relay. If 115VAC is present on X10relay terminal #4 (R), check control switch
contact continuity between terminals #4(R) and #5(W/R). Ifcontacts are open, replace
control switch. If contacts are closed and 115VAC is present between control switch
terminal #5 (W/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 and S5 dip switch 4). Check discharge line
temperature. For a thermistor check, see "II.G.Thermistor Check." If 1-min. ll cycle
starts after harvest timer terminates, check that FS is clean and operating properly, see
"II.F. Float Switch Check and Cleaning." If FS is closed, CB proceeds to the next cycle.
Ifnot, replace CB.
Note: The minimum total time allowed by CB for a complete harvest cycle is based on
S5 dip switch 4. Maximum harvest time allowed is 20 min.
NOTICE! S4 dip switch 7 must remain on. Otherwise, PM will not energize during
the last seconds of harvest.
6) Freeze Cycle – LED 1 is on. Comp, FM*, 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. short cycle protection timer terminates and FS opens,
freeze cycle terminates.
Note: PM power supply switches from CBK1 #5(DBU) in harvest to K1 #4 (R) in freeze.
Anti-Slush: When anti-slush is enabled (S5 dip switch 5 "ON"), PM de-energizes when
thermistor reaches 36°F (2.2°C) (5.8kΩ) for 10 sec. then, energizes for the remainder of
the freeze cycle.
19
a) Freeze Cycle Diagnosis: Conrm Comp, FM*, FMR, and PM continue. Conrm
that FM and LLV energize. Conrm WRV opens. Next, conrm HGV and X10 relay
de-energize. During the rst 5 min. of freeze, conrm evaporator is cooling. If not,
conrm 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. Specication and Performance Data
Sheets."
b) Comp, FM*, and FMR Diagnosis: If Comp, FM*, 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 CB "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.A. Specication and Performance Data Sheets."
FM* Diagnosis: If Comp is energized but FM* is not, check CB K1 #1 (V) and #9
(V) wiring circuit for loose connection. If connections are good, check FM* capacitor,
motor winding, and blade for binding.
FMR Diagnosis: 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. If115VAC is not present, check eld
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: Conrm water is owing 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 (W/R) to neutral (W). If 115VAC is present at
CB K1 #4 (R) and not at control switch #5 (W/R), check control switch continuity
between #5 (W/R) and #4 (R). Replace as needed. If 115VAC is present at control
switch #5 (W/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.
20
f) Refrigerant Pressures, HM, and TXV Diagnosis: If evaporator is still not cooling,
check refrigerant pressures. See "VIII.A. Specication and Performance Data
Sheets."
Next, check HM operation. If refrigeration pressures are above HM setpoint and
HMis 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.
IfWRV fails to open in freeze, check for proper refrigerant pressures. See "VIII.A.
Specication and Performance Data Sheets." 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.F. 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.A. Specication and Performance Data Sheets."
i) Short Freeze Cycle Diagnosis: Conrm water tank lls and overows during 1 min.
ll and harvest cycles. If not, check water supply lters, shut-off valve, WV screen.
Ifwater tank empties before 5 min. timer terminates and freeze cycle is short, check
that CV is not leaking by (water owing 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.F. 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
rst pump-out is determined by S4 dip switch 5. See the table below.
Control Board Settings
S4 Dip Switch Setting
No. 5
OFF Every 10 cycles After 11th freeze cycle
ON Every cycle After 2nd freeze cycle
Pump-Out Frequency Control Board
Comp, FM*, and FMR continue, HGV energize.
Note: 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!S4dip 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.
21
FM and LLV de-energize. PM stops for 2 sec., then reverses for 10/20 sec. depending
on pump-out timer (S4dip switch 3 & 4) setting. When the pump-out timer terminates,
pump-out is complete. The pump-out frequency control (S4 dip switch 5) 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 10 cycles or every cycle. For details, see "III.C.4.
Pump-Out Frequency Control (S4 dip switch 5)."
Pump-Out Diagnosis: In the freeze cycle before pump-out (see table above), after
5min. of freeze disconnect CB black K5 connector (FS connector). Check that PM
stops and re-starts. Next, check that PM rotation is correct (water owing 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. IfLEDs1,3, 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.
If115VAC 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
X10relay. If 115VAC is present on X10 terminal #2 (DBU) and PM is not energized
check for 115VAC at X12 terminal #6 (DBU) to neutral (W) and X12 terminal #4
(DBU) to neutral (W). If 115VAC is present on X12 terminal #6 (DBU) and not on X12
terminal #4 (DBU), check for 115VAC at X12 terminal #7 (P) to X12 terminal #8 (W). If
115VAC is not present, check CB K1 pin #2 (P) wiring for loose connection. If 115VAC
is present and X12 is not energized, check coil continuity. Replace as needed. If X12
is energized and X12 terminal #4 (DBU) does not have 115VAC, replace X12 relay
(contacts sticking). If X12 terminal #4 (DBU) has 115VAC, PM should be energized and
rotating in pump-out rotation. If not, check PM motor windings and impeller for binding.
If energized and rotating correctly, make sure the drain line is not clogged and that CV
is clean and operating properly.
Conrm 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 satised or power is switched off. The
appliance always restarts at the 1-min. ll cycle.
2. Shutdown
1) See "II.E.Bin Control Check."
3. Freeze-Time Correction Cycle Diagnosis
1) See "II.C. Freeze-Time Correction Cycle."
Legend: BC–bin control; CB–control board; Comp–compressor; CV–check valve;
FM*-FM–fan motor; FMR–fan motor remote; FS–oat switch; HGV–hot gas valve;
HM–headmaster (C.P.R.); HPS–high-pressure switch; L LV –liquid line valve;
MBC–mechanical bin control; PM–pump motor; TXV–thermostatic expansion
valve; WRV–water regulating Valve; WV–inlet water valve
22
C. Freeze-Time Correction Cycle (90 min.)
Freeze-Time Correction function is enabled when S4 Dip Switch 7 is in the "ON" position
and initiates when the minimum and maximum freeze times have exceeded differential
parameters. Freeze-time correction timer and count starts at the beginning of the 2nd
freeze cycle after startup from power off condition. Freeze-time correction timer and count
continues and retains its freeze-time correction timer and count during a BC off cycle
and resumes its freeze-time correction timer and count on the 2nd freeze cycle after BC
restart. If freeze-time differential is exceeded (see table below), freeze-time correction
cycle starts and CB red "POWER OK" LED blinks. When freeze-time correction cycle
occurs 3 or more times within a 36 hour period, CB yellow "EXT HARVEST" LED blinks
with CB red "POWER OK" LED. Appliance starts in freeze cycle after a freeze-time
correction cycle. Toreset CB LEDs, press ALARM RESET button on CB with power on.
CB resets LEDs and appliance continues cycle without interruption.
1) Freeze Time Differential Initiation: CB starts monitoring freeze times on the second
freeze time. After 3freeze cycles (4th total), CBbegins to compare minimum and
maximum freeze time cycles. Every freeze cycle time after the rst freeze cycle
time is added to the freeze time list. Minimum and maximum freeze time differential
comparisons begin on the third cycle and are monitored up to 10cycles. On the 11th
cycle the rst freeze cycle time is dropped to maintain the 10 maximum number of
cycles.
Example: After 8 cycles (excluding rst cycle), if the differential between the
shortestcycle (minimum) and the longest cycle (maximum) is equal to or greater than
427 sec. a freeze-time correction cycle is initiated:
Number of
Freeze Cycles
3 254
4 309
5 349
6 380
7 406
8 427
9 446
10 462
Differential
Value in Sec.
23
2) Freeze-Time Correction Sequence:
First occurrence within 36 hr., minimum and maximum freeze times have exceeded
differential parameters. CB "POWER OK" LED starts blinking. Freeze-Time Correction
Cycle starts.
Second occurrence within 36 hr., minimum and maximum freeze times have exceeded
differential parameters. If not reset, CB "POWER OK" LED continues blinking. If reset
from rst occurrence, CB "POWER OK" LED starts blinking. Freeze-Time Correction
Cycle starts.
Third occurrence within 36 hr. minimum and maximum freeze times have exceeded
differential parameters. CB yellow "EXT HARVEST" LED starts blinking. Also, If not
reset, CB "POWER OK" LED continues blinking. If reset, CB "POWER OK" LED starts
blinking. Freeze-Time Correction Cycle starts.
Total freeze-time correction cycle last for 90min. At the end of 80min., the nal step
initiates and nal Harvest Pump Time (Harvest Assist) with WV (10-min.) starts. Once
the nal Harvest Pump Time (Harvest Assist) with WV (10-min.) terminates
(90 min. complete), normal freeze cycle begins.
2a) 10-Min. Harvest Pump Time (Harvest Assist) with WV: CB "POWER OK" LED
blinking. CB LEDs 1, 4, 3, and 2 are on and Comp, FMR, HGV, PM, and WV energize.
10-min. timer starts. Once 10-min. timer terminates, CB LEDs 1, 3, and 2 turn off and
Comp, FMR, HGV, and PM de-energize. WV continues.
2b) 10-Min. Fill: CB LED 4 on and WV energized. 10-min. timer starts.
2c) Final 10-Min. Harvest Pump Time (Harvest Assist) with WV: CB "POWER OK" LED
blinking. Once 10-min. timer terminates, CB LEDs 1, 4, 3, and 2 are on and Comp,
FMR, HGV, and PM energizes. WV continues. 10-min. timer starts. Once 10-min.
timer terminates, normal freeze cycle begins. CB LED 1 on and Comp, FMR, and PM
continue. HGV and WV de-energize.
Note: After 3rd Freeze-Time Correction Cycle in 36 hours, CB signals with blinking CB
yellow "EXT HARVEST" LED. Appliance continues normal operation.
CB "POWER OK" LED and CB yellow "EXT HARVEST" LED continue blinking in
normal operation sequence.
3) Appliance Cycle Reset and CB Alarm Reset:
Cycle Reset: Power supply or control switch turned off and on again: Appliance turns
off, then re-starts at 1.Fill Cycle.
Alarm Reset: CB "ALARM RESET" pressed during or after a freeze-time correction
cycle with power supply on: Appliance continues cycle with no interruption or reset.
CB red "POWER OK" LED blinking: CB red "POWER OK" LED resets to solid.
CB yellow "EXT HARVEST" LED blinking: CB yellow "EXT HARVEST: LED turns off.
Legend: BC–bin control; CB–control board; Comp–compressor; CR–compressor relay;
CT–control transformer; CV–check valve; FM–fan motor; FMR–fan motor remote;
FS–oat switch; HGV–hot gas valve; HM–headmaster (C.P.R.); HPS–high-pressure
switch; L LV–liquid line valve; PM–pump motor; TXV–thermostatic expansion valve;
WRV–water regulating valve; WV–inlet water valve
24
D. 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 ll 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 exible. 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
Board
"J" 1, 4, 3, 2
Correct LED
Lighting Sequence
Following the test, the icemaker begins operation at the 1-minute ll 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
(Wwire). If output voltage is not found and the appropriate LED is on, replace CB.
Legend: CB–control board; CT–control transformer
25
E. Bin Control Check
BC 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), BC 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 lled with
ice. Setting in the prohibited range may result in severe damage to the appliance.
BC is factory set, and generally no adjustment is required. However, adjustment may be
needed in some conditions, particularly at higher altitude locations.
Note: A jumper (4A4883G01) must be placed on CB red K4connector. Otherwise,
CByellow "BC OPEN" LED is on and appliance will not start.
To check BC, 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 BC bulb.
4) Disconnect BC wires from BC switch.
5) Hold your hand around the bulb to warm it up.
6) Check for continuity across BC switch. If closed, continue to step 6. If open, adjust or
replace BC.
7) With the multimeter test leads still in place, hold ice on BC bulb to lower the
temperature. Within 10 sec., BC switch should open. If it remains closed, adjust or
replace BC.
Legend: BC–thermostatic bin control
26
F. Float Switch Check and Cleaning
FS is used to determine that there is sufficient water in the water tank after the 1-min.
ll 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) Drain the water tank. Remove the front
insulation panel, then slide the cube guide
to the right. Remove the rubber cap and
sleeve covering the overow pipe. See
Fig. 3. Unscrew the overow pipe. After
the water tank has drained, reconnect the
overow pipe. Replace the rubber cap,
sleeve, cube guide, and front insulation
panel in their correct positions. NOTICE!
Make sure the O-ring is attached to
the bottom of the overow pipe and be
careful not to cross thread the overow
pipe.
Cube Guide
Rubber Cap
Sleeve
Overow Pipe
O-Ring
Fig. 3
4) Remove the control box cover.
5) Disconnect FS connector from CB K5connector.
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.F.2. Float Switch Cleaning."
After cleaning FS, check it again. Replace if necessary.
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. ll 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.
27
13) Check for continuity across FS leads. With the water tank full, FS should be closed.
IfFS is closed and the icemaker will not switch from the 1-min. ll cycle to the initial
harvest cycle, replace CB. If FS is open, conrm that the water tank is full. If the water
tank is not full, check the water supply, water lters, and inlet water valve. If the water
tank is full, follow the steps in "II.F.2. Float Switch Cleaning." After cleaning FS, check it
again. Replace if necessary.
Legend: CB–control board; FS–oat switch
2. Float Switch Cleaning
Depending on local water conditions, scale may build up on FS. Scale on the switch can
cause the oat 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) Drain the water tank. Remove the rubber cap covering the overow pipe in the water
tank. Remove the overow pipe by turning it counterclockwise. After the water tank has
drained, replace the overow pipe and the rubber cap in their correct positions.
Note: Be sure the overow pipe o-ring is in its correct position on the overow pipe.
4) Disconnect the vent tube and the ush 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 oat. Be
careful not to bend the retainer rod excessively when removing it.
6) Wipe down FS housing, shaft, oat, 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 ush tube.
8) Move the control switch to the "ICE" position.
9) Replace the front panel in their correct
Vent
positions.
10) Turn on the power supply to start the
automatic icemaking process.
Legend: CB–control board; FS–oat switch
Flush
Shaft
Float Switch
Housing
Float
Retainer Rod
28
Rubber Boot
and Hose
Fig. 4
G. 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
H. 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. WARNING! Control
switch in "OFF" position does not de-energize all loads. Risk of electric shock.
Use extreme caution and exercise safe electrical practices.
29
I. Diagnostic Tables
1. No Ice Production
No Ice Production - Possible Cause
1. Power Supply a) Off, blown fuse, or tripped breaker.
b) Not within specications.
2. Main Transformer
(208-230/60/1 Models with main
transformer and all 208-230/60/3
Models)
3. Fuse (Control Box) a) Blown.
4. Thermostatic Bin Control
See "II.E. Bin Control Check"
5. Control Switch a) In "OFF" or "WASH" position.
6. High-Pressure Switch a) Dirty condenser.
7. Control Transformer
(115VAC/10.5VAC)
8. Control Board
See "II.D. Control Board Check"
9. Mechanical Bin Control
See "II.E. Bin Control Check"
10. Water Supply a) Water supply off or improper water pressure.
11. Inlet Water Valve a) Screen or orice clogged.
12. Float Switch
See "II.F. Float Switch Check and
Cleaning"
13. Compressor a) Compressor relay/magnetic contactor contacts bad or coil winding
a) Voltage tap switch not set to proper voltage.
b) Coil winding open or shorted.
a) Tripped with bin lled with ice.
b) Ambient temperature too cool.
c) Set too warm.
d) Bulb out of position.
e) Open contacts, defective.
b) Bad contacts.
b) Fan motor not operating.
c) Refrigerant overcharged.
d) Bad contacts.
e) Refrigerant lines or components plugged.
a) Coil winding open or shorted.
a) In alarm.
b) Yellow "BC OPEN" LED on (bin full) ("G" control board).
c) Defective.
a) Tripped with bin lled with ice.
b) Actuator does not move freely.
c) Defective.
b) External water lters clogged.
b) Coil winding open.
c) Water valve open in freeze cycle.
a) Float does not move freely.
b) Defective.
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.
30
No Ice Production - Possible Cause
14. Hot Gas Valve a) Closed in harvest cycle.
b) Open in freeze cycle.
15. Thermistor
See "II.G. Thermistor Check"
16. Pump Motor a) Motor winding open.
1 7. Thermostatic Expansion Valve a) Bulb loose.
18. Liquid Line Valve a) Closed in freeze cycle.
19. Fan Motor a) Motor winding open.
20. Water System a) Water leaks causing short freeze time.
a) Loose, disconnected, or defective.
b) Bearing worn out or locked rotor.
c) Defective capacitor.
d) Mechanical seal worn out.
b) Operating erratically.
b) Open in harvest cycle.
b) Bearing worn out or locked rotor.
c) Defective capacitor.
2. Freeze-Up
Defrost and clean the icemaker prior to diagnosing freeze-up. Fill out a freeze-up checklist.
See "II.J. Freeze Up Check List," 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
4. Water Supply a) Low water pressure.
5. Inlet Water Valve a) Screen or orice clogged.
6. Float Switch
See "II.F. Float Switch Check and
Cleaning"
7. Refrigerant Charge a) Low.
8. Control Board
See "III.C. Settings and
Adjustments" and "II.D. Control
Board Check"
9. Bin Control
See "II.E. Bin Control Check"
a) Dirty.
b) Out of position.
b) External water lters clogged.
c) Insufficient water line size.
Minimum 1/4" Nominal ID (6 mm Nominal OD in the EU) copper
water tubing or equivalent.
b) Defective.
a) Dirty, sticking.
b) Defective.
a) Harvest timer (S4 dip switch 1 & 2) set too short.
b) Harvest pump timer (S4 dip switch 7) not in factory default position.
c) Defective.
a) Actuator does not move freely.
31
Freeze-Up - Possible Cause
10. Thermistor
See "II.G. Thermistor Check"
11. Thermostatic Expansion Valve a) Defective.
12. Hot Gas Valve a) Closed or restricted.
13. Liquid Line Valve a) Open.
1. Evaporator a) Scaled up.
2. Spray Tubes and/or Spray
Guides
3. Refrigerant Charge a) Low.
4. Control Board
See "II.D. Control Board Check"
5. Inlet Water Valve a) Leaking by.
6. Float Switch
See "II.F. Float Switch Check and
Cleaning"
7. Pump Motor a) RPM too slow.
8. Thermostatic Expansion Valve a) Bulb loose or defective.
9. Liquid Line Valve a) Restricted.
10. Headmaster (C.P.R.)
(remote models)
a) Loose, disconnected, or defective.
Freeze Cycle
b) Damaged.
a) Dirty.
b) Out of position.
a) Freeze timer (S4 dip switch 9 & 10) set incorrectly.
b) Defective.
a) Float does not move freely.
b) Defective.
b) Impeller damaged.
a) Not bypassing.
32
3. Low Ice Production
Low Ice Production - Possible Cause
Long Harvest Cycle
1. Evaporator a) Scaled up.
2. Spray Tubes and/or Spray
Guides
3. Refrigerant Charge a) Low.
4. Water Supply a) Low water pressure.
5. Control Board
See "II.D. Control Board Check"
6. Thermistor
See "II.G. Thermistor Check"
7. Hot Gas Valve a) Erratic or closed.
8. Inlet Water Valve a) Screen or orice clogged.
9. Compressor a) Inefficient or off.
10. Liquid Line Valve a) Erratic or open.
11. Thermostatic Expansion Valve a) Defective.
1. Evaporator a) Scaled up, dirty.
2. Float Switch
See "II.F. Float Switch Check and
Cleaning"
3. Inlet Water Valve a) Leaking by.
4. Hot Gas Valve a) Erratic or open.
5. Condenser a) Clogged.
6. Control Board
See "II.D. Control Board Check"
7. Refrigerant Charge a) Low.
8. Thermostatic Expansion Valve a) Bulb loose.
9. Compressor a) Inefficient or off.
10. Pump Motor a) RPM too slow.
11. Liquid Line Valve a) Erratic or restricted.
12. Headmaster (C.P.R.)
(remote models)
a) Dirty.
b) Out of position.
b) External water lters 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.
a) Thermistor connection loose (K3).
b) Defective.
a) Loose, disconnected, or defective.
Long Freeze Cycle
a) Scaled up, dirty.
b) Float sticking.
c) Defective switch.
a) Float switch connection loose (K5).
b) Defective.
b) Defective.
a) Not bypassing.
33
J. Freeze-Up Check List
Freeze-Up Check List
Please Complete When Diagnosing a Freeze-Up, Refrigerant Leak, or Low Charge
Technical Support Fax #: 770-487-3360
Make Copies And Use As Needed
Model #___________________________ Serial # ____________________Install Date____________Freeze-Up Date___________
List model and manufacture of bin or dispenser__________________________.
Date appliance was last cleaned:__________.
Freeze-Up Defrost
YES NO
[ ] [ ] 1) After defrosting, was the appliance leak
checked?
[ ] [ ] 2) Were any leaks found?
If so where?_____________________.
[ ] [ ] 3) Was any refrigerant added to the unit?
If so, how much?_________________.
Set Up
[ ] [ ] 4) Is the appliance stand alone?
[ ] [ ] 5) Is water line independent?
[ ] [ ] 6) Is water line correct size? If not________”.
3/8" Nominal ID Copper Water Tubing or
Equivalent.
7) What is water pressure?___________.
Water Temperature_________.
[ ] [ ] 8) Does appliance have any water ltration?
If yes please list the following:
Filter brand___________________.
Model________________.
Filter pressure gauge reading during the ll
cycle___________.
Date lter was last
replaced?__________________________.
GPM or LPM ow rate of lter
system?__________________.
9) Ambient temperature at appliance?
______________.
At remote condenser (if applicable)?________.
Appliance Status
[ ] [ ] 10) Is the appliance and/or oat switch dirty?
11) List the S4 (1-10) and S5 (1-5) DIP switch
settings.
S4: 1___2___3___4___5___6___7___8___9___10____
S5: 1_____2_____3_____4_____5______
[ ] [ ] 12) Is DIP switch number 7 ON (harvest pump
time (harvest assist) all models and freeze-time
correction models with control board
2A7664-02?
[ ] [ ] 13) Is the cube guide positioned correctly?
[ ] [ ] 14) Are the evaporator separators positioned
properly?
[ ] [ ] 15) Is the thermistor properly mounted, tight, and
insulated?
[ ] [ ] 16) Is the TXV bulb properly mounted, tight, and
insulated?
[ ] [ ] 17) Are splash guards in place?
Appliance Operation
Fill
YES NO
[ ] [ ] 18) Does the water tank ll and overow?
60-90 sec. Note: Larger models may take up to
120 seconds to overow when empty.
[ ] [ ] 19) If NO in step 17, is water ow 5GPM for larger?
Harvest
[ ] [ ] 20) Is the hot gas valve opening?
[ ] [ ] 21) Is harvest pump time (harvest assist) utilized
(S4dip switch 7)?
[ ] [ ] 22) Is hot gas valve opening in harvest?
[ ] [ ] 23) Does water valve close completely when
de energized?
24) What was length of harvest?___________.
Freeze
[ ] [ ] 25) Is pump motor energized in freeze cycle except
during 10-sec. anti-slush. If activated (S5 dip
switch 5 on)?
26) Water-cooled condenser outlet temperature
5-min. into freeze? ______________°F.
27) What was length of freeze?____________.
[ ] [ ] 28) Is the cube size consistent from inlet to outlet of
evaporator?
[ ] [ ] 29) Is ice still dropping when next freeze cycle starts?
30) What is the ice drop weight?___________.
31) What is head pressure?
Freeze_________Harvest_______.
(Freeze pressure should be taken 5 minutes into
the cycle).
32) What is suction pressure?
Freeze______Harvest_______.
(Freeze pressure should be taken 5 minutes into
the cycle).
[ ] [ ] 33) Did appliance shutdown within 10seconds when
ice contacts the bin controls thermostatic bulb?
Freeze-Time Correction Operation
[ ] [ ] 34) Has Freeze-Time Correction been activated?
("POWER OK" LED blinking).
[ ] [ ] 35) Has moer than 1 Freeze-Time Correction been
activated?
(POWER OK" LED and "EXT HARVEST" LED
blinking).
Note: Make copies of this form and use it when diagnosing a freeze up condition. Submit a completed copy of the checklist
along with the freeze-up labor claim form.
34
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.D. 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, K4RED,
and K5 BLACK, because the same connector is used for the thermistor,
mechanical bin control, and oat 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.
35
A. Control Board Layout
1. "J" Control Board
• Bin Control Switch
Closed LED (green)
(on continuously
in thermostatic bin
control application)
• "ALARM RESET" Button
"J" Control Board
• S4 Dip Switch
• "OUTPUT TEST" Button
(used to test relays on control board)
• Bin Control Switch
Open LED (yellow)
(mechanical bin
control application only)
• Part Number
• Alarm Buzzer
• POWER OK LED
(red) (lights when
10.5VAC is supplied
to K2 connector)
• Relay LEDs
(4) (indicate which
relays are energized
and which K1
connector pins are
energized
• LED 2 (X2 Relay)
LED 2 on:
K1 Connector Pin #2
LED 2 off:
K1 Connector Pin #3
• 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
• LED 1 (X1 Relay)
K1 Connector Pin #1, #9
• K3 (white) Connector
Thermistor
(harvest control and
high temperature safety)
• K4 (red) Connector
Mechanical Bin Control or
K4 Jumper (thermostatic
bin control application)
• S5 Dip Switch
• K5 (black) Connector
Float Switch
(water level)
Label
(control board revision
level indicated on label
on side of relay)
• K1 Connector
Pins #1 through #10
#1, 9 Magnetic Contactor or
Compressor Relay
#2 Hot Gas Valve
#3 Fan Motor
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
#8 Open
• K2 Connector
Control Transformer
(10.5VAC)
"J" Control Board
Part Number 2A7664-02
36
B. LED Lights and Audible Alarm Safeties
Beep occurs and red "POWER OK" LED turns on when control switch is moved to "ICE"
position.
Sequence
Green LEDs 1 through 4 turn on and sequence from initial startup as listed in the table
below. Order of green LEDs from the outer edge of control board is 1, 4, 3, 2.
Sequence Step LED
1-Minute Fill Cycle 4 WV
Harvest Cycle 1, 4, 2 Comp, FM*, FMR, HGV, WV 1 minute 20 minutes
Harvest Pump Time
(harvest assist)
Freeze Cycle 1 Comp, FM/FMR, PM, LLV 5 minutes freeze timer
Anti-Slush Control 1, 3 Comp, FM/FMR, LLV If S5 dip switch 5 on,
Pump-Out Cycle 1, 4
*FM energized if on K1 Connector Pin #9;
1, 3, 2 Comp, FM*, FMR, HGV, PM 0 seconds 50 seconds
†
, 3, 2 Comp, FM*, FMR, HGV, PM, WV †, DV 10 seconds 20 seconds
†
pump-out timer setting
Energized
Components
Time LEDs are On
Min. Max.
setting
PM off 10 sec. when
thermistor at 36°F (2.2°C)
Alarms
Type Alarm Notes
1
Beep
2
Beep
3
Beep
LED Blink Freeze-Time
To reset above safeties, press "ALARM RESET" button with power supply on.
6 Low Voltage
7 High Voltage
High Evaporator Temp.
(temperature > 127°F) (53°C)
Harvest Backup Timer
(harvest > 20 min. for two
cycles in a row)
Freeze Timer
(freeze > freeze timer setting
for two cycles in a row)
Correction (CB-2A7664-02)
(maximum freeze time
differential exceeded)
(92Vac±5% or less)
(147Vac±5% or more)
Check for harvest problem (stuck HGV or relay), hot water entering unit, stuck HM, or shorted thermistor.
Check thermistor (open), HGV not opening, TXV or LLV
leaking by, low charge, inefficient Comp, or WRV leaking
by.
Check FS stuck closed (up), WV leaking by, HGV leaking
by, PM not pumping, TXV defective, LLV not opening, low
charge, HMnot bypassing, or inefficient Comp.
Red POWER OK LED blinks.
After 3freeze-time correction cycles in 36hours, yellow
EXT HARVEST LED also blinks.
Fill out freeze-up checklist. See "II.J. Freeze-Up Check
List."
Red LED turns off if voltage protection operates.
Control voltage safeties automatically reset when voltage
is corrected.
Legend: CB–control board; Comp–compressor; FM–fan motor; FMR–fan motor remote;
FS–oat 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
37
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
2A7664-01and 2A7664-02 control boards:
S4 Dip Switch No. 1 2 3 4 5 6 7 8 9 10
KM-901MAJ
KM-1100M_J
KM-901MWJ
KM-901MRJ
KM-1340MAJ
KM-1340MWJ
KM-1601M_J
KM-1340MRJ ON OFF OFF OFF OFF OFF ON OFF OFF OFF
KM-1340MRJ3
KM-1601MRJ3
OFF OFF OFF OFF OFF OFF ON OFF OFF OFF
ON OFF OFF OFF OFF OFF ON OFF OFF OFF
OFF OFF OFF OFF ON ON ON OFF OFF OFF
OFF OFF OFF OFF OFF OFF ON OFF OFF OFF
S5 Dip Switch (Do Not Adjust)
"J" Control Board
Dip Switch No.
All Models OFF OFF OFF OFF ON
1 2 3 4 5
S4 Dip Switch
"J" Control Boards
Freeze Timer (9 & 10)
Factory Use (8)
Harvest Pump Time (Harvest Assist)/Freeze-Time Correction (7)
(Do Not Adjust)
Harvest Pump Time (Harvest Assist) (6) (Do Not Adjust)
Pump-Out Frequency Control (5)
Pump-Out Time/Harvest Time During Pump-Out (3 & 4)
1 2 3 4 5 6 7 8 9 10
ON
Harvest Timer (1 & 2)
S5 Dip Switch
"J" Control Board Only
Do Not Adjust
ON
38
Anti-Slush (5)
Minimum Harvest Time (4)
Rell Counter (2 and 3)
Float Switch Selector (1)
1 2 3 4 5
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
No. 1 No. 2
OFF OFF 60
ON OFF 90
OFF ON 120
ON ON 180
(sec.)
3. Pump-Out Timer/Harvest Time During Pump-Out (S4 dip switch 3 & 4)
NOTICE
• 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 ows through the small tube to power ush the oat
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.)
T1 T2
No. 3 No. 4
OFF OFF 10 150 100 Closed Closed
ON OFF 10 180 130 Closed Closed
OFF ON 10 120 70 Open Closed
ON ON 20 180 180 Closed Closed
S5-4 OFF S5-4 ON S5-4 OFF S5-4 ON
Inlet Water
Valve
T1: Time to drain the water tank
T2: Harvest timer at pump out
39
4. Pump-Out Frequency Control (S4 dip switch 5)
The pump-out frequency control is factory set to drain the water tank every 10 cycles.
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
10 cycles.
The rst pump-out is dependent on S4 dip switch 5. See the table below.
S4 Dip Switch Setting
No. 5
OFF Every 10 cycles After 11th freeze cycle
ON Every cycle After 2nd freeze cycle
Pump-Out Frequency 1st Pump-Out
5. Harvest Pump Time (Harvest Assist) (S4 dip switch 6)
NOTICE
Factory set for proper operation. Do not adjust. Adjustment outside of the factory
default setting may result in damage to the appliance.
Harvest pump time (harvest assist) is only active when S4 dip switch 7 is in the "ON"
position. In the factory default position, the harvest pump time (harvest assist) starts with
50sec. left to go in harvest cycle (S4 dip switch 6) and after the thermistor reaches 48°F
(9°C) at the evaporator outlet and the control board reads 3.9kΩ from the thermistor. The
harvest pump time (harvest assist) is factory set, and no adjustment is required.
Harvest Pump Time
S4 Dip Switch Setting
No. 6 S5-4 OFF S5-4 ON
OFF 50 sec. 25 sec.
ON 25 sec. 15 sec.
(Harvest Assist)
40
6. Harvest Pump Time (Harvest Assist)/Freeze-Time Correction (S4 dip switch 7)
NOTICE
Factory set for proper operation. Do not adjust. Adjustment outside of the factory
default setting may result in damage to the appliance.
a) Harvest Pump Time (Harvest Assist)
Depending on S4 dip switch 7 setting, the pump motor either stays off or is energized
during the last seconds of the harvest cycle. When the pump motor is energized (S4 dip
switch 7 on), 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 the harvest pump
time value(S4 dip switch 6), 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.B. Wiring Diagrams." In the factory default position, 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 K1connector pin #5 (DBU wire) energizes, energizing the pump motor for the
last seconds of harvest. Harvest pump time adjusted by S4 dip switch 1 & 2 and S5 dip
switch 4settings. Contact Technical Support before adjusted these settings.
b) Freeze-Time Correction
When S4 dip switch 7 is in the on position, freeze-time correction enabled.
See "II.C. Freeze-Time Correction Cycle (90 min.)."
S4 Dip Switch Setting
No. 7
OFF Disabled
ON Enabled
Harvest Pump Time
(Harvest Assist)
Freeze-Time Correction
(CB: 2A7664-02)
7. Factory Use (S4 dip switch 8)
Factory set for proper operation. Do not adjust. This must be left in the factory default
position.
41
8. Freeze Timer (S4 dip switch 9 & 10)
NOTICE
Adjust to proper specication, 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.I.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
No. 9 No. 10
OFF OFF 60
OFF ON 50
ON OFF 70
ON ON 75
(min.)
9. Float Switch Selector (S5 dip switch 1)
This dip switch setting allows use of this control board in single and dual oat switch
models. This model uses a single oat switch style.
NOTICE
Do not adjust. This must be left in the factory default position or the icemaker will
not operate correctly.
S5 Dip Switch Setting
OFF Bottom Float Switch Enabled
ON Top Float Switch Enabled
Top or Bottom Float Switch
ControlNo. 1
10. Rell Counter (S5 dip switch 2 and 3)
NOTICE
Do not adjust. These must be left in the factory default position or the icemaker will
not operate correctly.
S5 Dip Switch Setting Rell
No. 2 No. 3
OFF OFF 0
OFF ON 1 rell
ON OFF 9 rells
ON ON 10 rells
Counter
42
11. Minimum Harvest Time (S5 dip switch 4)
NOTICE
Factory set for proper operation. Do not adjust. Adjustment outside the factory
default setting may result in damage to the appliance.
S5 Dip Switch Setting Minimum
No. 4
OFF 120 sec.
ON 70 sec.
Harvest Timer
12. Anti-Slush (S5 dip switch 5)
This dip switch setting provides anti-slush control during the freeze cycle. When the
evaporator temperature reaches 36°F (2.2°C) the control board reads a 5.8kΩ signal
from the thermistor and de-energizes the water pump for 10 sec. to melt ice slush and
prevent ice slush from blocking the water supply tubing, causing irregular freeze patterns.
NOTICE
Factory set for proper operation. Do not adjust. Adjustment outside the factory
default setting may result in damage to the appliance.
S5 Dip Switch Setting
Anti-SlushNo. 5
OFF Disabled
ON Enabled
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.
43
IV. Refrigeration Circuit and Component Service Information
WARNING
• This appliance should be diagnosed and repaired only by qualied service
personnel to reduce the risk of death, electric shock, serious injury, or re.
• 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-certied 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
ow.
• 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.
44
2. Brazing
WARNING
• R-404A itself is not ammable 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 ames), R-404A can be decomposed to form hydrouoric
acid and carbonyl uoride both of which are hazardous.
• Do not use silver alloy or copper alloy containing arsenic.
1) Braze all ttings while purging with nitrogen gas owing 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
ow.
• 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 ow 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.
45
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.
46
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
Expansion Valves
Hot Gas Valves
Liquid Line
Valves
Fan Motors Install a new capacitor.
Pump Motor Install a new capacitor.
Thermistor • Attach the new thermistor to the suction line in the same location as the previous
• Attach the thermostatic expansion valve bulb to the suction line in the same location as
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.
• Use copper tube of the same diameter and length when replacing valve lines.
thermistor.
• The thermistor should be at the 12 o'clock position on the tube.
• Smoothly ll 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.
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.
2) 5 min. after a freeze cycle starts, conrm
that the thermometer reads 104°F to 115°F
(40°C to 46°C). If it does not, rotate the
adjustment screw by using a at 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
Top View
proper range, verify the refrigerant charge.
3) Check that the condenser drain temperature is stable.
Adjustment Screw
CW – Higher
CCW – Lower
Fig. 5
47
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 qualied 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 Task
Daily Scoop Clean the ice scoop using a neutral cleaner. Rinse thoroughly after
cleaning.
Bi-Weekly Air Filters Inspect. Wash with warm water and neutral cleaner if dirty.
Monthly External Water
Filters
Icemaker Exterior Wipe down with a clean, soft cloth. Use a damp cloth containing a
Underside of
Icemaker and Top
Kits; Bin Door and
Snout
Yearly Icemaker and
Dispenser Unit/Ice
Storage Bin Liner
Water Supply Inlet Close the icemaker water supply line shut-off valve and drain the water
Condenser Inspect. Clean if necessary by using a brush or vacuum cleaner. More
Water Hoses Inspect the water hoses and clean/replace if necessary.
Check for proper pressure and change if necessary.
neutral cleaner to wipe off oil or dirt build up. Clean any chlorine staining
(rust colored spots) using a non-abrasive cleanser.
Wipe down with a clean cloth and warm water.
Clean and sanitize per the cleaning and sanitizing instructions provided
in the instruction manual or maintenance label on the icemaker.
system. Clean the water supply inlet screen.
frequent cleaning may be required depending on location.
48
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) Drain the water tank.
Disconnect This
End of Pump
Tubing to Drain
Water Tank
a) On KM-901M_J, 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.
Base Cover
Fig. 6
b) On KM-1340M_J and KM-1601M_J, remove the rubber cap covering the overow
pipe in the water tank. Remove the overow pipe by turning it counterclockwise. After
the water tank has drained, replace the overow pipe and the rubber cap in their
correct positions.Note: Be sure the overow pipe o-ring is in its correct position on
the overow pipe.
4) Replace the base cover (if applicable) and 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.
49
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.
50
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 certied service personnel.
51
VIII. Technical Information
t
R
We reserve the right to make changes in specications and design without prior notice.
A. Specication and Performance Data Sheets
Pressure data is recorded at 5 min. into freezing cycle. The data not in bold should be
used for reference only.
1. KM-901MAJ
Specification Sheet
AC SUPPLY VOLTAGE 208-230/60/1
AMPERAGE 13 A
MINIMUM CIRCUIT AMPACITY 20 A
MAXIMUM FUSE SIZE 20 A
ELECTRIC & WATER CONSUMPTION
ELECTRIC W (kWH/100 lbs.)
WATER gal./24HR (gal./100 lbs.)
ICE PRODUCTION PER CYCLE 19.7 lbs. (8.9 kg) 960pcs.
BIN CONTROL SYSTEM Thermostat
REFRIGERANT CHARGE R404A, 3 lb. 4.9 oz. (1500g)
Performance Data Shee
APPROXIMATE ICE PRODUCTION
PER 24 HR.
lbs./day kg./day
APPROXIMATE ELECTRIC
CONSUMPTION
watts 100/38
APPROXIMATE WATER
CONSUMPTION PER 24 HR.
gal./day m3/day
FREEZING CYCLE TIME
min. 100/38
HARVEST CYCLE TIME
min. 100/38
HEAD PRESSURE
PSIG kg/cm2G
SUCTION PRESSURE
PSIG kg/cm2G
90/70°F 70/50°F
1570 (5.00) 1510 (4.00)
166 (22.0) 453 (50.0)
AMBIENT TEMP.
(ºF/ºC)
70/21 905 411 860 390 806 366
80/27 871 395 802 364 751 341
90/32 860 390 753 342 699 317
100/38 852 386 740 336 650 295
70/21
80/27
90/32
70/21 453 1.71
80/27 388 1.47 258 0.98 242 0.92
90/32 368 1.39 166 0.63 134 0.51
100/38 269 1.02 158 0.60 104 0.39
70/21
80/27
90/32
70/21
80/27
90/32
70/21 217 15.3
80/27 233 16.4 265 18.6 286 20.1
90/32 238 16.7 287 20.2 310 21.8
100/38 241 16.9 292 20.6 331 23.3
70/21 60 4.2 62 4.4 67 4.7
80/27 62 4.3 65 4.6 71 5.0
90/32 62 4.4 67 4.7 73 5.1
100/38 64 4.5 68 4.8 78 5.5
50/10 70/21 90/32
1510 1528 1576
1523 1551 1613
1528 1570 1627
1545 1583 1680
29 31 33
31 34 36
31 36 38
31 37 40
4.4 3.7 3.5
3.9 2.8 3.0
3.7 2.0 2.0
3.0 2.0
WATER TEMP. (ºF/ºC)
368 1.39 317 1.20
238 16.7 261 18.4
2.0
TOTAL HEAT OF REJECTION FROM CONDENSE
TOTAL HEAT OF REJECTION FROM COMPRESSOR 1,700 BTU/h [AT 90ºF (32ºC) / WT 70ºF (21ºC)]
13,000 BTU/h [AT 90ºF (32ºC) / WT 70ºF (21ºC)]
52
2. KM-901MWJ
t
t
y
Specification Shee
AC SUPPLY VOLTAGE 208-230/60/1
AMPERAGE 10 A
MINIMUM CIRCUIT AMPACITY 20 A
MAXIMUM FUSE SIZE 20 A
ELECTRIC & WATER CONSUMPTION 90/70°F 70/50°F
ELECTRIC W (kWH/100 lbs.) 1290 (3.56) 1280 (3.23)
WATER gal./24HR (gal./100 lbs.) 139 (16.0) 230 (24.2)
WATER COOLED CONDENSER 983 (113) 531 (56)
gal./24HR (gal./100 lbs.)
ICE PRODUCTION PER CYCLE 19.1 lbs. (8.7 kg) 960pcs.
BIN CONTROL SYSTEM Thermostat
REFRIGERANT CHARGE R404A, 1 lb. 14 oz. (850g)
Performance Data Shee
APPROXIMATE ICE PRODUCTION
PER 24 HR.
lbs./day kg./da
APPROXIMATE ELECTRIC
CONSUMPTION
watts 100/38
APPROXIMATE WATER
CONSUMPTION PER 24 HR.
gal./day m3/day
FREEZING CYCLE TIME
min. 100/38
HARVEST CYCLE TIME
min. 100/38
HEAD PRESSURE
PSIG kg/cm2G
SUCTION PRESSURE
PSIG kg/cm2G
AMBIENT TEMP.
(ºF/ºC)
70/21 950 431 927 420 888 403
80/27 932 423 896 406 853 387
90/32 927 420 870 395 828 376
100/38 917 416 860 390 790 358
70/21
80/27
90/32
70/21 761 2.88 867 3.28 1412 5.35
80/27 842 3.19 1006 3.81 1774 6.72
90/32 867 3.28 1122 4.25 1808 6.84
100/38 1197 4.53 1283 4.86 2437 9.23
70/21
80/27
90/32
70/21
80/27
90/32
70/21 245 17.2 246 17.3 259 18.2
80/27 246 17.3 248 17.5 266 18.7
90/32 246 17.3 250 17.6 266 18.7
100/38 252 17.7 254 17.8 280 19.7
70/21 57 4.0 58 4.1 62 4.3
80/27 58 4.1 59 4.2 64 4.5
90/32 58 4.1 60 4.2 65 4.5
100/38 60 4.2 61 4.3 69 4.9
50/10 70/21 90/32
1280 1283 1299
1282 1287 1310
1283 1290 1311
1290 1295 1330
26 27 28
27 28 29
27 29 30
27 29 31
3.2 2.9 2.7
3.0 2.5 2.5
2.9 2.2 2.1
2.6 2.2 2.1
WATER TEMP. (ºF/ºC)
TOTAL HEAT OF REJECTION FROM CONDENSER
TOTAL HEAT OF REJECTION FROM COMPRESSOR 1,500 BTU/h [AT 90ºF (32ºC) / WT 70ºF (21ºC)]
WATER FLOW FOR CONDENSER 97 gal./h [AT 100ºF (38ºC) / WT 90ºF (32ºC)]
PRESSURE DROP OF COOLING WATER LINE less than 10 PSIG
12,700 BTU/h [AT 90ºF (32ºC) / WT 70ºF (21ºC)]
53
3. KM-901MRJ with URC-14F
Specification Sheet
AC SUPPLY VOLTAGE 208-230/60/1
AMPERAGE 12 A
MINIMUM CIRCUIT AMPACITY 20 A
MAXIMUM FUSE SIZE 20 A
ELECTRIC & WATER CONSUMPTION 90/70°F 70/50°F
ELECTRIC W (kW H/100 lbs.) 1610 (4.52) 1490 (3.96)
WATER gal./24HR (gal./100 lbs.) 136 (16.0) 271 (30.0)
ICE PRODUCTION PER CYCLE 19.3 lbs. (8.8 kg) 960pcs.
BIN CONTROL SYSTEM Thermostat
REFRIGERANT CHARGE TOTAL R404A, 12 lb. 5.5 oz. (5600g)
ICEMAKER, 7 lb. 15 oz. (3600g)
CONDENSER, 4 lb. 6.5 oz. (2000g)
Performance Data Sheet
APPROXIMATE ICE PRODUCTION
PER 24 HR.
lbs./day kg./day
APPROXIMATE ELECTRIC
CONSUMPTION
watts 100/38
APPROXIMATE WATER
CONSUMPTION PER 24 HR.
gal./day m3/day
FREEZING CYCLE TIME
min. 100/38
HARVEST CYCLE TIME
min. 100/38
HEAD PRESSURE
PSIG kg/cm2G
SUCTION PRESSURE
PSIG kg/cm2G
AMBIENT TEMP.
(ºF/ºC)
70/21 904 410
80/27 893 405 869 394 808 366
90/32 889 403 853 387 797 361
100/38 871 395 840 381 745 338
70/21
80/27
90/32
70/21 271 1.03
80/27 241 0.91 180 0.68 175 0.66
90/32 232 0.88 136 0.52 124 0.47
100/38 186 0.70 133 0.51 112 0.42
70/21
80/27
90/32
70/21
80/27
90/32
70/21 200 14.1
80/27 210 14.7 229 16.1 248 17.5
90/32 213 14.9 243 17.1 262 18.4
100/38 217 15.2 248 17.4 280 19.7
70/21 57 4.0 58 4.1 60 4.3
80/27 58 4.1 59 4.2 62 4.4
90/32 58 4.1 60 4.2 63 4.4
100/38 59 4.1 61 4.3 66 4.6
50/10 70/21 90/32
1490 1525 1541
1517 1571 1569
1525 1610 1615
1517 1611 1620
29 30 31
30 31 32
30 32 33
30 32 34
3.9 3.4 3.2
3.5 2.7 2.8
3.4 2.1 2.1
2.8 2.1 2.1
WATER TEMP. (ºF/ºC)
889 403 842 382
232 0.88 209 0.79
213 14.9 231 16.2
TOTAL HEAT OF REJECTION FROM CONDENSER
TOTAL HEAT OF REJECTION FROM COMPRESSOR 1,500 BTU/h [AT 90ºF (32ºC) / WT 70ºF (21ºC)]
CONDENSER VOLUME 134 CU. IN. (URC-14-F)
12,500 BTU/h [AT 90ºF (32ºC) / WT 70ºF (21ºC)]
54
4. KM-901MRJ3 with URC-14F
Specification Sheet
AC SUPPLY VOLTAGE 208-230/60/3
AMPERAGE 7.1 A
MINIMUM CIRCUIT AMPACITY 20 A
MAXIMUM FUSE SIZE 20 A
ELECTRIC & WATER CONSUMPTION 90/70°F 70/50°F
ELECTRIC W (kW H/100 lbs.) 1520 (4.40) 1410 (3.65)
WATER gal./24HR (gal./100 lbs.) 125 (15.0) 259 (28.0)
ICE PRODUCTION PER CYCLE 19 lbs. (8.6 kg) 960pcs.
BIN CONTROL SYSTEM Thermostat
REFRIGERANT CHARGE TOTAL R404A, 12 lb. 5.5 oz. (5600g)
ICEMAKER, 7 lb. 15 oz. (3600g)
CONDENSER, 4 lb. 6.5 oz. (2000g)
Performance Data Sheet
APPROXIMATE ICE PRODUCTION
PER 24 HR.
lbs./day kg./day
APPROXIMATE ELECTRIC
CONSUMPTION
watts 100/38
APPROXIMATE WATER
CONSUMPTION PER 24 HR.
gal./day m3/day
FREEZING CYCLE TIME
min. 100/38
HARVEST CYCLE TIME
min. 100/38
HEAD PRESSURE
PSIG kg/cm2G
SUCTION PRESSURE
PSIG kg/cm2G
AMBIENT TEMP.
(ºF/ºC)
70/21 927 420
80/27 905 411 861 391 810 368
90/32 899 408 830 376 780 354
100/38 887 402 818 371 734 333
70/21
80/27
90/32
70/21 259 0.98
80/27 229 0.87 168 0.64 169 0.64
90/32 220 0.83 125 0.47 117 0.44
100/38 175 0.66 123 0.46 110 0.42
70/21
80/27
90/32
70/21
80/27
90/32
70/21 200 14.1
80/27 208 14.6 224 15.7 248 17.5
90/32 210 14.8 235 16.5 258 18.2
100/38 217 15.2 240 16.9 280 19.7
70/21 55 3.9 56 3.9 59 4.1
80/27 56 3.9 57 4.0 61 4.3
90/32 56 3.9 58 4.1 62 4.3
100/38 57 4.0 59 4.1 65 4.6
50/10 70/21 90/32
1410 1442 1468
1435 1485 1501
1442 1520 1541
1441 1525 1560
29 29 30
29 30 31
29 31 32
30 31 33
3.5 3.1 2.9
3.2 2.5 2.6
3.1 2.0 2.0
2.6 2.0
WATER TEMP. (ºF/ºC)
899 408 852 386
220 0.83 201 0.76
210 14.8 231 16.2
2.0
TOTAL HEAT OF REJECTION FROM CONDENSER
TOTAL HEAT OF REJECTION FROM COMPRESSOR 1,400 BTU/h [AT 90ºF (32ºC) / WT 70ºF (21ºC)]
CONDENSER VOLUME
12,000 BTU/h [AT 90ºF (32ºC) / WT 70ºF (21ºC)]
134 CU. IN. (URC-14-F)
55
5. KM-1100MAJ
t
Specification Sheet
AC SUPPLY VOLTAGE 208-230/60/1
AMPERAGE 12.5 A
MINIMUM CIRCUIT AMPACITY 20 A
MAXIMUM FUSE SIZE 20 A
ELECTRIC & WATER CONSUMPTION 90/70°F 70/50°F
ELECTRIC W (kWH/100 lbs.) 1910 (4.90) 1810 (4.00)
WATER gal./24HR (gal./100 lbs.) 178 (19.0) 467 (43.0)
ICE PRODUCTION PER CYCLE 16.5 lbs. (7.5 kg) 960pcs.
BIN CONTROL SYSTEM Thermostat
REFRIGERANT CHARGE R404A, 3 lb. 1.4 oz. (1400g)
Performance Data Shee
APPROXIMATE ICE PRODUCTION
PER 24 HR.
lbs./day kg./day
APPROXIMATE ELECTRIC
CONSUMPTION
watts 100/38
APPROXIMATE WATER
CONSUMPTION PER 24 HR.
gal./day m3/day
FREEZING CYCLE TIME
min. 100/38
HARVEST CYCLE TIME
min. 100/38
HEAD PRESSURE
PSIG kg/cm2G
SUCTION PRESSURE
PSIG kg/cm2G
AMBIENT TEMP.
(ºF/ºC)
70/21 1087 493 1042 473 954 433
80/27 1053 478 984 446 880 399
90/32 1042 473 935 424 836 379
100/38 1016 461 912 414 745 338
70/21
80/27
90/32
70/21 467 1.77
80/27 403 1.52 271 1.03 252 0.96
90/32 383 1.45 178 0.67 143 0.54
100/38 281 1.07 170 0.64 112 0.42
70/21
80/27
90/32
70/21
80/27
90/32
70/21 242 17.0
80/27 255 17.9 281 19.8 313 22.0
90/32 259 18.2 300 21.1 331 23.3
100/38 267 18.7 307 21.6 360 25.3
70/21 52 3.7 54 3.8 58 4.1
80/27 54 3.8 57 4.0 62 4.3
90/32 54 3.8 59 4.1 64 4.5
100/38 55 3.9 60 4.2 68 4.8
50/10 70/21 90/32
1810 1839 1736
1832 1878 1695
1839 1910 1759
1770 1875 1620
24 26 29
26 28 31
26 30 33
27 31 35
3.1 2.8 2.7
2.8 2.4 2.5
2.8 2.0 2.0
2.4 2.0 2.1
WATER TEMP. (ºF/ºC)
383 1.45 329 1.25
259 18.2 288 20.2
TOTAL HEAT OF REJECTION FROM CONDENSER
TOTAL HEAT OF REJECTION FROM COMPRESSOR 2,300 BTU/h [AT 90ºF (32ºC) / WT 70ºF (21ºC)]
15,700 BTU/h [AT 90ºF (32ºC) / WT 70ºF (21ºC)]
56
6. KM-1100MWJ
t
t
y
Specification Shee
AC SUPPLY VOLTAGE 208-230/60/1
AMPERAGE 9.6 A
MINIMUM CIRCUIT AMPACITY 20 A
MAXIMUM FUSE SIZE 20 A
ELECTRIC & WATER CONSUMPTION 90/70°F 70/50°F
ELECTRIC W (kWH/100 lbs.) 1680 (4.00) 1610 (3.60)
WATER gal./24HR (gal./100 lbs.) 201 (20.0) 395 (36.8)
WATER COOLED CONDENSER 1076 (107) 653 (61)
gal./24HR (gal./100 lbs.)
ICE PRODUCTION PER CYCLE 19.5 lbs. (8.8 kg) 960pcs.
BIN CONTROL SYSTEM Thermostatic
REFRIGERANT CHARGE R404A, 1 lb. 10.5 oz. (750g)
Performance Data Shee
APPROXIMATE ICE PRODUCTION
PER 24 HR.
lbs./day kg./da
APPROXIMATE ELECTRIC
CONSUMPTION
watts 100/38
APPROXIMATE WATER
CONSUMPTION PER 24 HR.
gal./day m3/day
FREEZING CYCLE TIME
min. 100/38
HARVEST CYCLE TIME
min. 100/38
HEAD PRESSURE
PSIG kg/cm2G
SUCTION PRESSURE
PSIG kg/cm2G
AMBIENT TEMP.
(ºF/ºC)
70/21 1073 487 1054 478 1008 457
80/27 1058 480 1028 466 972 441
90/32 1054 478 1006 456 954 433
100/38 1038 471 994 451 906 411
70/21
80/27
90/32
70/21 1048 3.97
80/27 1099 4.16 1204 4.56 1811 6.85
90/32 1115 4.22 1278 4.84 1816 6.87
100/38 1357 5.14 1404 5.31 2310 8.75
70/21
80/27
90/32
70/21
80/27
90/32
70/21 243 17.1
80/27 245 17.2 250 17.6 262 18.4
90/32 246 17.3 253 17.8 264 18.6
100/38 250 17.6 256 18.0 275 19.3
70/21 51 3.6 52 3.7 58 4.1
80/27 52 3.6 54 3.8 62 4.4
90/32 52 3.7 55 3.9 62 4.4
100/38 55 3.8 57 4.0 69 4.9
50/10 70/21 90/32
1610 1631 1661
1626 1658 1689
1631 1680 1711
1637 1687 1740
24 24 25
24 25 26
24 26 27
25 26 28
3.2 2.9 2.7
2.9 2.4 2.5
2.9 2.0 2.0
2.5 2.0 2.0
WATER TEMP. (ºF/ºC)
1115 4.22 1538 5.82
246 17.3 255 18.0
TOTAL HEAT OF REJECTION FROM CONDENSER
TOTAL HEAT OF REJECTION FROM COMPRESSOR 2,200 BTU/h [AT 90ºF (32ºC) / WT 70ºF (21ºC)]
WATER FLOW FOR CONDENSER 91 gal./h [AT 100ºF (38ºC) / WT 90ºF (32ºC)]
PRESSURE DROP OF COOLING WATER LINE less than 10 PSIG
17,100 BTU/h [AT 90ºF (32ºC) / WT 70ºF (21ºC)]
57
7. KM-1100MRJ with URC-14F
A
Specification Sheet
AC SUPPLY VOLTAGE 208-230/60/1
AMPERAGE 12.5 A
MINIMUM CIRCUIT AMPACITY 20 A
MAXIMUM FUSE SIZE 20 A
ELECTRIC & WATER CONSUMPTION 90/70°F 70/50°F
ELECTRIC W (kW H/100 lbs.) 1930 (4.50) 1840 (3.82)
WATER gal./24HR (gal./100 lbs.) 185 (18.0) 451 (39.0)
ICE PRODUCTION PER CYCLE 16.5 lbs. (7.5 kg) 960pcs.
BIN CONTROL SYSTEM Thermostat
REFRIGERANT CHARGE TOTAL R404A, 9 lb. 11.2 oz. (4400g)
ICEMAKER, 5 lb. 4.7 oz. (2400g)
CONDENSER, 4 lb. 6.5 oz. (2000g)
Performance Data Sheet
APPROXIMATE ICE PRODUCTION
PER 24 HR.
lbs./day kg./day
APPROXIMATE ELECTRIC
CONSUMPTION
watts 100/38
APPROXIMATE WATER
CONSUMPTION PER 24 HR.
gal./day m3/day
FREEZING CYCLE TIME
min. 100/38
HARVEST CYCLE TIME
min. 100/38
HEAD PRESSURE
PSIG kg/cm2G
SUCTION PRESSURE
PSIG kg/cm2G
MBIENT TEMP.
(ºF/ºC)
70/21 1156 524
80/27 1128 512 1070 486 983 446
90/32 1119 508 1030 467 947 429
100/38 1096 497 1010 458 870 395
70/21
80/27
90/32
70/21 451 1.71
80/27 392 1.48 271 1.02 257 0.97
90/32 373 1.41 185 0.70 157 0.59
100/38 281 1.06 179 0.68 131 0.49
70/21
80/27
90/32
70/21
80/27
90/32
70/21 202 14.2
80/27 213 15.0 237 16.6 261 18.4
90/32 217 15.3 253 17.8 277 19.5
100/38 222 15.6 259 18.2 300 21.1
70/21 49 3.4 50 3.5 56 3.9
80/27 50 3.5 52 3.6 59 4.2
90/32 50 3.5 53 3.7 60 4.2
100/38 53 3.7 55 3.8 66 4.6
50/10 70/21 90/32
WATER TEMP. (ºF/ºC)
1119 508 1045 474
1840 1866 1902
1860 1901 1937
1866 1930 1966
1873 1939 2000
373 1.41 326 1.24
22 23 25
22 24 27
23 26 28
23 26 30
3.4 3.0 2.9
3.1 2.5 2.6
3.0 2.0 2.0
2.6 2.0 2.0
217 15.3 240 16.9
TOTAL HEAT OF REJECTION FROM CONDENSER
TOTAL HEAT OF REJECTION FROM COMPRESSOR 2,200 BTU/h [AT 90ºF (32ºC) / WT 70ºF (21ºC)]
CONDENSER VOLUME 134 CU. IN. (URC-14-F)
15,600 BTU/h [AT 90ºF (32ºC) / WT 70ºF (21ºC)]
58
8. KM-1340MAJ
A
Specification Sheet
AC SUPPLY VOLTAGE 208-230/60/1 ( 3 WIRE WITH NEUTRAL FOR 115V)
AMPERAGE 13.2 A
MINIMUM CIRCUIT AMPACITY 20 A
MAXIMUM FUSE SIZE 20 A
ELECTRIC & WATER CONSUMPTION 90/70°F 70/50°F
ELECTRIC W (kW H/100 lbs.) 2180 (4.81) 2000 (3.77)
WATER gal./24HR (gal./100 lbs.) 257 (23.6) 501 (39.3)
ICE PRODUCTION PER CYCLE 28.6 lbs. (13 kg) 1440pcs.
BIN CONTROL SYSTEM Thermostat
REFRIGERANT CHARGE R404A, 4 lb. 10.1 oz. (2100g)
Performance Data Sheet
APPROXIMATE ICE PRODUCTION PER
24 HR.
lbs./day kg./day
APPROXIMATE ELECTRIC
CONSUMPTION
watts 100/38
PPROXIMATE WATER CONSUMPTION
PER 24 HR.
gal./day m3/day
FREEZING CYCLE TIME
min. 100/38
HARVEST CYCLE TIME
min. 100/38
HEAD PRESSURE
PSIG kg/cm2G
SUCTION PRESSURE
PSIG kg/cm2G
AMBIENT TEMP.
(ºF/ºC)
70/21 1275 578
80/27 1233 559 1149 521 1070 485
90/32 1221 554 1089 494 1009 458
100/38 1204 546 1070 485 935 424
70/21
80/27
90/32
70/21 501 1.90
80/27 447 1.69 335 1.27 283 1.07
90/32 430 1.63 257 0.97 196 0.74
100/38 334 1.27 243 0.92 140 0.53
70/21
80/27
90/32
70/21
80/27
90/32
70/21 235 16.5
80/27 248 17.4 274 19.3 311 21.8
90/32 252 17.7 293 20.6 328 23.1
100/38 261 18.4 301 21.2 360 25.3
70/21 52 3.7 55 3.9 59 4.1
80/27 54 3.8 59 4.2 63 4.4
90/32 55 3.9 63 4.4 67 4.7
100/38 56 3.9 64 4.5 70 4.9
50/10 70/21 90/32
2000 2053 2101
2040 2122 2157
2053 2180 2222
2054 2190 2260
30 31 33
31 33
31 35 36
31 35 38
4.7 4.1 3.7
4.3 3.4 3.1
4.1 2.7 2.4
3.4 2.7 2.1
WATER TEMP. (ºF/ºC)
1221 554 1143 518
430 1.63 361 1.37
252 17.7 284 19.9
35
TOTAL HEAT OF REJECTION FROM CONDENSER
TOTAL HEAT OF REJECTION FROM COMPRESSOR 2,800 BTU/h [AT 90ºF (32ºC) / WT 70ºF (21ºC)]
21,000 BTU/h [AT 90ºF (32ºC) / W T 70ºF (21ºC)]
59
9. KM-1340MWJ
Specification Sheet
AC SUPPLY VOLTAGE 208-230/60/1 ( 3 W IRE WITH NEUTRAL FOR 115V)
AMPERAGE 11.0 A
MINIMUM CIRCUIT AMPACITY 20 A
MAXIMUM FUSE SIZE 20 A
ELECTRIC & WATER CONSUMPTION 90/70°F 70/50°F
ELECTRIC W (kWH/100 lbs.) 1920 (3.60) 1820 (3.31)
WATER gal./24HR (gal./100 lbs.) 228 (17.8) 443 (33.5)
ICE PRODUCTION PER CYCLE 29.4 lbs. (13.3 kg) 1440pcs.
BIN CONTROL SYSTEM Thermostat
REFRIGERANT CHARGE R404A, 2 lb. 1.5 oz. (950g)
Performance Data Sheet
APPROXIMATE ICE PRODUCTION
PER 24 HR.
lbs./day kg./day
APPROXIMATE ELECTRIC
CONSUMPTION
watts 100/38
APPROXIMATE WATER
CONSUMPTION PER 24 HR.
gal./day m3/day
FREEZING CYCLE TIME
min. 100/38
HARVEST CYCLE TIME
min. 100/38
HEAD PRESSURE
PSIG kg/cm2G
SUCTION PRESSURE
PSIG kg/cm2G
AMBIENT TEMP.
(ºF/ºC)
70/21 1323 600
80/27 1313 596 1294 587 1188 539
90/32 1310 594 1280 581 1186 538
100/38 1276 579 1258 571 1100 499
70/21
80/27
90/32
70/21 1278 4.84
80/27 1411 5.34 1682 6.37 2301 8.71
90/32 1452 5.50 1873 7.09 2445 9.25
100/38 1819 6.89 2007 7.60 2970 11.24
70/21
80/27
90/32
70/21
80/27
90/32
70/21 229 16.1
80/27 231 16.2 235 16.5 259 18.2
90/32 232 16.3 238 16.7 259 18.2
100/38 239 16.8 243 17.1 278 19.5
70/21 47 3.3 48 3.3 50 3.5
80/27 47 3.3 48 3.4 52 3.6
90/32 48 3.3 49 3.4 52 3.7
100/38 49 3.4 50 3.5 55 3.9
50/10 70/21 90/32
1820 1849 1987
1842 1888 2080
1849 1920 2092
1910 1960 2250
29 29 32
29 30
29 30 33
30 31 36
3.8 3.3 3.1
3.5 2.7 2.7
3.3 2.2 2.1
2.8 2.2 2.1
WATER TEMP. (ºF/ºC)
1310 594 1236 561
1452 5.50 1935 7.33
232 16.3 248 17.4
33
TOTAL HEAT OF REJECTION FROM CONDENSER
TOTAL HEAT OF REJECTION FROM COMPRESSOR 2,400 BTU/h [AT 90ºF (32ºC) / WT 70ºF (21ºC)]
WATER FLOW FOR CONDENSER 116.9
PRESSURE DROP OF COOLING WATER LINE
18,500 BTU/h [AT 90ºF (32ºC) / WT 70ºF (21ºC)]
gal/h [AT 100°F (38°C)/W T 90°F (32°C)]
less than 10PSIG
60
10. KM-1340MRJ with URC-14F
N
y
Specification Sheet
AC SUPPLY VOLTAGE 208-230/60/1 ( 3 WIRE WITH NEUTRAL FOR 115V)
AMPERAGE 14.0 A
MINIMUM CIRCUIT AMPACITY 20 A
MAXIMUM FUSE SIZE 20 A
ELECTRIC & WATER CONSUMPTIO
ELECTRIC W (kWH/100 lbs.) 2230 (4.54) 2070 (3.62)
WATER gal./24HR (gal./100 lbs.) 206 (17.5) 554 (40.4)
ICE PRODUCTION PER CYCLE 30.6 lbs. (13.9 kg) 1440pcs.
BIN CONTROL SYSTEM Thermostat
REFRIGERANT CHARGE TOTAL R404A, 11 lb. 0.4 oz. (5000g)
Performance Data Sheet
APPROXIMATE ICE PRODUCTION
PER 24 HR.
lbs./day kg./da
APPROXIMATE ELECTRIC
CONSUMPTION
watts 100/38
APPROXIMATE WATER
CONSUMPTION PER 24 HR.
gal./day m3/day
FREEZING CYCLE TIME
min. 100/38
HARVEST CYCLE TIME
min. 100/38
HEAD PRESSURE
PSIG kg/cm2G
SUCTION PRESSURE
PSIG kg/cm2G
90/70°F 70/50°F
ICEMAKER, 6 lb. 9.8 oz. (3000g)
CONDENSER, 4 lb. 6.5 oz. (2000g)
AMBIENT TEMP.
(ºF/ºC)
70/21 1371 622
80/27 1328 602 1239 562 1153 523
90/32 1314 596 1177 534 1090 494
100/38 1296 588 1157 525 1010 458
70/21
80/27
90/32
70/21 554 2.10
80/27 476 1.80 318 1.20 311 1.18
90/32 452 1.71 206 0.78 178 0.67
100/38 335 1.27 199 0.75 152 0.57
70/21
80/27
90/32
70/21
80/27
90/32
70/21 203 14.3
80/27 217 15.2 245 17.2 264 18.6
90/32 221 15.5 265 18.6 285 20.1
100/38 224 15.8 270 19.0 304 21.4
70/21 47 3.3 50 3.5 51 3.6
80/27 49 3.4 53 3.7 54 3.8
90/32 50 3.5 56 3.9 57 4.0
100/38 49 3.5 56 4.0 58 4.1
50/10 70/21 90/32
2070 2117 2132
2106 2179 2167
2117 2230 2230
2103 2230 2230
28 30 31
29 32
30 34 35
30 34 36
4.7 4.0 3.7
4.2 3.1 3.1
4.0 2.3 2.2
3.2 2.3 2.1
WATER TEMP. (ºF/ºC)
1314 596 1231 558
452 1.71 398 1.50
221 15.5 242 17.0
33
TOTAL HEAT OF REJECTION FROM CONDENSER
TOTAL HEAT OF REJECTION FROM COMPRESSOR 2,600 BTU/h [AT 90ºF (32ºC) / W T 70ºF (21ºC)]
CONDENSER VOLUME 134 CU. IN. (URC-14-F)
19,900 BTU/h [AT 90ºF (32ºC) / WT 70ºF (21ºC)]
61
11. KM-1340MRJ3 with URC-14F
y
Specification Sheet
AC SUPPLY VOLTAGE 208-230/60/3
AMPERAGE 12.5 A
MINIMUM CIRCUIT AMPACITY 20 A
MAXIMUM FUSE SIZE 20 A
ELECTRIC & WATER CONSUMPTION 90/70°F 70/50°F
ELECTRIC W (kWH/100 lbs.) 2190 (4.16) 1980 (3.33)
WATER gal./24HR (gal./100 lbs.) 222 (17.5) 507 (35.5)
ICE PRODUCTION PER CYCLE 30.4 lbs. (13.8 kg) 1440pcs.
BIN CONTROL SYSTEM Thermostat
REFRIGERANT CHARGE TOTAL R404A, 11 lb. 0.4 oz. (5000g)
ICEMAKER, 6 lb. 9.8 oz. (3000g)
CONDENSER, 4 lb. 6.5 oz. (2000g)
Performance Data Sheet
APPROXIMATE ICE PRODUCTION
PER 24 HR.
lbs./day kg./da
APPROXIMATE ELECTRIC
CONSUMPTION
watts 100/38
APPROXIMATE WATER
CONSUMPTION PER 24 HR.
gal./day m3/day
FREEZING CYCLE TIME
min. 100/38
HARVEST CYCLE TIME
min. 100/38
HEAD PRESSURE
PSIG kg/cm2G
SUCTION PRESSURE
PSIG kg/cm2G
AMBIENT TEMP.
(ºF/ºC)
70/21 1428 648 1381 626 1260 571
80/27 1392 631 1318 598 1166 529
90/32 1381 626 1266 574 1125 510
100/38 1338 607 1233 559 995 451
70/21
80/27
90/32
70/21 507 1.92 423 1.60 368 1.39
80/27 443 1.68 313 1.19 291 1.10
90/32 423 1.60 222 0.84 184 0.70
100/38 323 1.22 213 0.81 149 0.56
70/21
80/27
90/32
70/21
80/27
90/32
70/21 209 14.7 225 15.8 252 17.7
80/27 222 15.6 247 17.4 276 19.4
90/32 225 15.8 265 18.6 294 20.6
100/38 232 16.3 272 19.1 320 22.5
70/21 49 3.4 50 3.5 55 3.9
80/27 50 3.5 51 3.6 58 4.1
90/32 50 3.5 52 3.7 58 4.1
100/38 52 3.7 53 3.8 64 4.5
50/10 70/21 90/32
1980 2042 2065
2027 2123 2113
2042 2190 2195
2026 2191 2200
28 29 31
29 30
29 31 34
30 32 36
4.3 3.6 3.4
3.8 2.8 2.9
3.6 2.0 2.0
2.9 2.0 2.0
WATER TEMP. (ºF/ºC)
33
TOTAL HEAT OF REJECTION FROM CONDENSER
TOTAL HEAT OF REJECTION FROM COMPRESSOR 2,400 BTU/h [AT 90ºF (32ºC) / WT 70ºF (21ºC)]
CONDENSER VOLUME 134 CU. IN. (URC-14F)
18,000 BTU/h [AT 90ºF (32ºC) / WT 70ºF (21ºC)]
62
12. KM-1601MRJ with URC-22F
y
Specification Sheet
AC SUPPLY VOLTAGE 208-230/60/1
AMPERAGE 15.9 A ( 5 Min. Freeze AT 104°F / WT 80°F)
MINIMUM CIRCUIT AMPACITY 20 A
MAXIMUM FUSE SIZE 20 A
ELECTRIC & WATER CONSUMPTION 90/70°F 70/50°F
ELECTRIC W (kWH/100 lbs.) 2810 (4.35) 2560 (3.85)
WATER gal./24HR (gal./100 lbs.) 279 (18.0) 729 (45.7)
ICE PRODUCTION PER CYCLE 29.9 lbs. (13.6 kg) 1440pcs.
BIN CONTROL SYSTEM Thermostat
REFRIGERANT CHARGE TOTAL R404A, 15 lb. 14 oz. (7200g)
ICEMAKER, 8 lb. 2.5 oz. (3700g)
CONDENSER, 7 lb. 11.5 oz. (3500g)
Performance Data Sheet
APPROXIMATE ICE PRODUCTION
PER 24 HR.
lbs./day kg./da
APPROXIMATE ELECTRIC
CONSUMPTION
watts 100/38
APPROXIMATE WATER
CONSUMPTION PER 24 HR.
gal./day m3/day
FREEZING CYCLE TIME
min. 100/38
HARVEST CYCLE TIME
min. 100/38
HEAD PRESSURE
PSIG kg/cm2G
SUCTION PRESSURE
PSIG kg/cm2G
AMBIENT TEMP.
(ºF/ºC)
70/21 1594 723
80/27 1584 719 1564 709 1555 705
90/32 1581 717 1550 703 1540 698
100/38 1581 717 1548 702 1530 694
70/21
80/27
90/32
70/21 729 2.76 597 2.26 541 2.05
80/27 628 2.38 424 1.60 436 1.65
90/32 597 2.26 279 1.06 261 0.99
100/38 451 1.71 275 1.04 245 0.93
70/21
80/27
90/32
70/21
80/27
90/32
70/21 217 15.3 233 16.4 259 18.2
80/27 229 16.1 254 17.8 282 19.8
90/32 233 16.4 271 19.1 299 21.0
100/38 240 16.8 278 19.5 325 22.9
70/21 48 3.4 49 3.4 49 3.5
80/27 48 3.4 49 3.5 50 3.5
90/32 49 3.4 50 3.5 51 3.6
100/38 49 3.4 50 3.5 51 3.6
50/10 70/21 90/32
2560 2633 2680
2616 2730 2747
2633 2810 2841
2625 2817 2870
23 23 25
23 25 27
23 25 28
24 26 30
5.0 4.2 4.0
4.4 3.2 3.5
4.2 2.4 2.5
3.4 2.4
WATER TEMP. (ºF/ºC)
1581 717 1569 712
2.6
TOTAL HEAT OF REJECTION FROM CONDENSER
TOTAL HEAT OF REJECTION FROM COMPRESSOR 3,600 BTU/h [AT 90ºF (32ºC) / WT 70ºF (21ºC)]
CONDENSER VOLUME 214 CU. IN. (URC-22F)
24,300 BTU/h [AT 90ºF (32ºC) / WT 70ºF (21ºC)]
63
13. KM-1601MRJ3 with URC-22F
Specification Sheet
AC SUPPLY VOLTAGE 208-230/60/3
AMPERAGE 12.9 A ( 5 Min. Freeze AT 104°F / WT 80°F)
MINIMUM CIRCUIT AMPACITY 20 A
MAXIMUM FUSE SIZE 20 A
ELECTRIC & WATER CONSUMPTION 90/70°F 70/50°F
ELECTRIC W (kW H/100 lbs.) 2640 (4.09) 2550 (3.70)
WATER gal./24HR (gal./100 lbs.) 279 (18.0) 579 (35.0)
ICE PRODUCTION PER CYCLE 29.9 lbs. (13.5 kg) 1440pcs.
BIN CONTROL SYSTEM Thermostat
REFRIGERANT CHARGE TOTAL R404A, 15 lb. 14 oz. (7200g)
ICEMAKER, 8 lb. 2.5 oz. (3700g)
CONDENSER, 7 lb. 11.5 oz. (3500g)
Performance Data Sheet
APPROXIMATE ICE PRODUCTION
PER 24 HR.
lbs./day kg./day
APPROXIMATE ELECTRIC
CONSUMPTION
watts 100/38
APPROXIMATE WATER
CONSUMPTION PER 24 HR.
gal./day m3/day
FREEZING CYCLE TIME
min. 100/38
HARVEST CYCLE TIME
min. 100/38
HEAD PRESSURE
PSIG kg/cm2G
SUCTION PRESSURE
PSIG kg/cm2G
AMBIENT TEMP.
(ºF/ºC)
70/21 1653 750
80/27 1630 739 1583 718 1567 711
90/32 1623 736 1550 703 1529 694
100/38 1623 736 1545 701 1510 685
70/21
80/27
90/32
70/21 579 2.19
80/27 512 1.94 375 1.42 375 1.42
90/32 491 1.86 279 1.06 260 0.98
100/38 391 1.48 274 1.04 242 0.91
70/21
80/27
90/32
70/21
80/27
90/32
70/21 210 14.8
80/27 212 14.9 217 15.2 225 15.8
90/32 213 15.0 220 15.5 228 16.0
100/38 215 15.1 222 15.6 235 16.5
70/21 47 3.3 46 3.3 48 3.4
80/27 47 3.3 46 3.2 49 3.4
90/32 46 3.3 45 3.2 48 3.3
100/38 48 3.3 46 3.2 50 3.5
50/10 70/21 90/32
2550 2576 2612
2570 2611 2647
2576 2640 2676
2583 2649 2710
23 23 26
23 24 27
23 25 28
24 26 30
5.0 4.2 3.8
4.4 3.2 3.2
4.2 2.4 2.2
3.3 2.3
WATER TEMP. (ºF/ºC)
1623 736 1597 725
491 1.86 448 1.69
2.1
213 15.0 220 15.4
TOTAL HEAT OF REJECTION FROM CONDENSER
TOTAL HEAT OF REJECTION FROM COMPRESSOR 3,700 BTU/h [AT 90ºF (32ºC) / WT 70ºF (21ºC)]
CONDENSER VOLUME 214 CU. IN. (URC-22F)
23,300 BTU/h [AT 90ºF (32ºC) / WT 70ºF (21ºC)]
64
B. Wiring Diagrams
1. KM-901M_J, KM-1100M_J
* High-Pressure Switch
PSIG
0
22
PSIG 412±
0
22
*
Water-Cooled Model Air and Remote Models
Cut-in 284±22 PSIG 327±22 PSIG
Cut-out 384±
65
2. KM-1340M_J and KM-1601MRJ
PSIG
0
22
PSIG 412±
0
22
* High-Pressure Switch
Water-Cooled Model Air and Remote Models
*
Cut-in 284±22 PSIG 327±22 PSIG
Cut-out 384±
66
3. KM-1340MRJ3 and KM-1601MRJ3
PSIG
0
22
* High-Pressure Switch
Cut-in 327±22 PSIG
Cut-out 412±
*
67
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