Hoshizaki FM-481AGE User manual

NO.NO. E2AH-582E2AH-582
ISSUED: NOV. 12, 2001ISSUED: NOV. 12, 2001
REVISED: SEP. 27, 2002REVISED: SEP. 27, 2002
HOSHIZAKIHOSHIZAKI
MODULAR FLAKERMODULAR FLAKER
MODELMODEL FM-481AGEFM-481AGE
FM-481AWGEFM-481AWGE
FM-481AGE-NFM-481AGE-N
FM-481AWGE-NFM-481AWGE-N
SERVICE MANUALSERVICE MANUAL

E2AH5820209E2AH5820209
CONTENTSCONTENTS PAGEPAGE
I.SPECIFICATIONSI.SPECIFICATIONS------------------------------------------------------------------------------------------------------------------------------------------------------------------------------11
1.DIMENSIONS/CONNECTIONS1.DIMENSIONS/CONNECTIONS----------------------------------------------------------------------------------------------------------------------------------11
[a] FM-481AGE, FM-481AGE-N[a] FM-481AGE, FM-481AGE-N ------------------------------------------------------------------------------------------------------------------------------11
[b] FM-481AWGE, FM-481AWGE-N[b] FM-481AWGE, FM-481AWGE-N ------------------------------------------------------------------------------------------------------------------22
[c]WITH STORAGEBIN[c]WITH STORAGEBIN----------------------------------------------------------------------------------------------------------------------------------------------------33
2.SPECIFICATIONS2.SPECIFICATIONS ------------------------------------------------------------------------------------------------------------------------------------------------------------------44
[a] FM-481AGE[a] FM-481AGE--------------------------------------------------------------------------------------------------------------------------------------------------------------------------44
[b] FM-481AWGE[b] FM-481AWGE--------------------------------------------------------------------------------------------------------------------------------------------------------------------55
[c] FM-481AGE-N[c] FM-481AGE-N--------------------------------------------------------------------------------------------------------------------------------------------------------------------66
[d] FM-481AWGE-N[d] FM-481AWGE-N--------------------------------------------------------------------------------------------------------------------------------------------------------------77
II.GENERALINFORMATIONII.GENERALINFORMATION ------------------------------------------------------------------------------------------------------------------------------------------------------88
1.CONSTRUCTION1.CONSTRUCTION --------------------------------------------------------------------------------------------------------------------------------------------------------------------88
2. CONTROLLER BOARD2. CONTROLLER BOARD ------------------------------------------------------------------------------------------------------------------------------------------------1010
[a] OPERATION PANEL[a] OPERATION PANEL ----------------------------------------------------------------------------------------------------------------------------------------------1010
[b] DETAILS OF FUNCTIONS[b] DETAILS OF FUNCTIONS --------------------------------------------------------------------------------------------------------------------------------1111
[c] MAIN BOARD LAYOUT[c] MAIN BOARD LAYOUT------------------------------------------------------------------------------------------------------------------------------------------1313
[d] SUB BOARD LAYOUT[d] SUB BOARD LAYOUT ------------------------------------------------------------------------------------------------------------------------------------------1414
[e] SETTING AND CHECKING OPERATION[e] SETTING AND CHECKING OPERATION ------------------------------------------------------------------------------------------1515
III.INSTALLATIONANDOPERATINGINSTRUCTIONSIII.INSTALLATIONANDOPERATINGINSTRUCTIONS --------------------------------------------------------------------------------2323
1.LOCATION1.LOCATION----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------2323
2. ELECTRICAL CONNECTIONS2. ELECTRICAL CONNECTIONS------------------------------------------------------------------------------------------------------------------------------2323
3. WATER SUPPLY AND DRAIN CONNECTIONS3. WATER SUPPLY AND DRAIN CONNECTIONS ----------------------------------------------------------------------------------2424
4. START-UP PROCEDURE4. START-UP PROCEDURE ------------------------------------------------------------------------------------------------------------------------------------------2525
IV.MAINTENANCEAND CLEANINGINSTRUCTIONSIV.MAINTENANCEAND CLEANINGINSTRUCTIONS --------------------------------------------------------------------------------2727
1. EXTRUDING HEAD, HOUSING BEARING, AUGER BEARING1. EXTRUDING HEAD, HOUSING BEARING, AUGER BEARING --------------------------------------------2727
2. MECHANICAL SEAL2. MECHANICAL SEAL ------------------------------------------------------------------------------------------------------------------------------------------------------2727
3. GEAR MOTOR3. GEAR MOTOR------------------------------------------------------------------------------------------------------------------------------------------------------------------------2828
4. CONDENSER4. CONDENSER ------------------------------------------------------------------------------------------------------------------------------------------------------------------------2828
5. AIR FILTER (AIR-COOLED MODEL ONLY)5. AIR FILTER (AIR-COOLED MODEL ONLY) ----------------------------------------------------------------------------------------------2828
6. WATER VALVE6. WATER VALVE --------------------------------------------------------------------------------------------------------------------------------------------------------------------2929
7. CLEANING OF WATER SYSTEM7. CLEANING OF WATER SYSTEM ----------------------------------------------------------------------------------------------------------------------3030
8. PERIODICAL CLEANING8. PERIODICAL CLEANING --------------------------------------------------------------------------------------------------------------------------------------------3232
V.TECHNICALINFORMATIONV.TECHNICALINFORMATION --------------------------------------------------------------------------------------------------------------------------------------------3333
1.WATERCIRCUITANDREFRIGERANTCIRCUIT1.WATER CIRCUITANDREFRIGERANTCIRCUIT ------------------------------------------------------------------------------3333
[a] FM-481AGE, FM-481AGE-N[a] FM-481AGE, FM-481AGE-N --------------------------------------------------------------------------------------------------------------------------3333
[b] FM-481AWGE, FM-481AWGE-N[b] FM-481AWGE, FM-481AWGE-N --------------------------------------------------------------------------------------------------------------3434
2.WIRINGDIAGRAM2.WIRINGDIAGRAM--------------------------------------------------------------------------------------------------------------------------------------------------------------3535
3. TIMING CHART AND SEQUENCE OF OPERATION3. TIMING CHART AND SEQUENCE OF OPERATION ----------------------------------------------------------------------3636
[a]STARTUP,ICEMAKINGOPERATION[a]STARTUP,ICEMAKINGOPERATION----------------------------------------------------------------------------------------------------3636
[b]STOP BUTTON[b] STOPBUTTON--------------------------------------------------------------------------------------------------------------------------------------------------------------3636
[c] AUTOMATIC FLUSH CYCLE[c] AUTOMATIC FLUSH CYCLE --------------------------------------------------------------------------------------------------------------------------3737
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[d] BIN CONTROL SWITCH (Storage Bin full for less than 60 minutes)[d] BIN CONTROL SWITCH (Storage Bin full for less than 60 minutes) --------------------------3838
[e] BIN CONTROL SWITCH (Storage Bin full for more than 60 minutes)[e] BIN CONTROL SWITCH (Storage Bin full for more than 60 minutes)------------------------3939
[f] BIN CONTROL SWITCH (Checking Actuator)[f] BIN CONTROL SWITCH (Checking Actuator)----------------------------------------------------------------------------------4040
[g]CHUTESWITCH[g]CHUTESWITCH ----------------------------------------------------------------------------------------------------------------------------------------------------------4141
4. PERFORMANCE DATA4. PERFORMANCE DATA ----------------------------------------------------------------------------------------------------------------------------------------------4242
[a] FM-481AGE[a] FM-481AGE----------------------------------------------------------------------------------------------------------------------------------------------------------------------4242
[b] FM-481AGE-N[b] FM-481AGE-N----------------------------------------------------------------------------------------------------------------------------------------------------------------4343
[c] FM-481AWGE[c] FM-481AWGE ----------------------------------------------------------------------------------------------------------------------------------------------------------------4444
[d] FM-481AWGE-N[d] FM-481AWGE-N----------------------------------------------------------------------------------------------------------------------------------------------------------4545
VI. ADJUSTMENT OF COMPONENTSVI. ADJUSTMENT OF COMPONENTS ------------------------------------------------------------------------------------------------------------------------4646
1. WATER REGULATING VALVE - WATER-COOLED MODEL ONLY1. WATER REGULATING VALVE - WATER-COOLED MODEL ONLY ------------------------------4646
VII.SERVICEDIAGNOSISVII.SERVICEDIAGNOSIS --------------------------------------------------------------------------------------------------------------------------------------------------------4747
1. NO ICE PRODUCTION1. NO ICE PRODUCTION --------------------------------------------------------------------------------------------------------------------------------------------------4747
2.LOW ICE PRODUCTION2.LOW ICE PRODUCTION----------------------------------------------------------------------------------------------------------------------------------------------4949
3.OTHERS3.OTHERS --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------4949
VIII. REMOVAL AND REPLACEMENT OF COMPONENTSVIII. REMOVAL AND REPLACEMENT OF COMPONENTS ------------------------------------------------------------------5151
1. SERVICE FOR REFRIGERANT LINES1. SERVICE FOR REFRIGERANT LINES --------------------------------------------------------------------------------------------------------5151
[a]SERVICEINFORMATION[a]SERVICE INFORMATION ----------------------------------------------------------------------------------------------------------------------------------5151
[b]REFRIGERANTRECOVERY[b]REFRIGERANT RECOVERY --------------------------------------------------------------------------------------------------------------------------5252
[c] EVACUATION AND RECHARGE[c] EVACUATION AND RECHARGE --------------------------------------------------------------------------------------------------------------5252
2.BRAZING2.BRAZING --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------5353
3. COMPRESSOR3. COMPRESSOR --------------------------------------------------------------------------------------------------------------------------------------------------------------------5454
4.DRIER4.DRIER----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------5555
5. EXPANSION VALVE5. EXPANSION VALVE--------------------------------------------------------------------------------------------------------------------------------------------------------5656
6. WATER REGULATING VALVE - WATER-COOLED MODEL ONLY6. WATER REGULATING VALVE - WATER-COOLED MODEL ONLY ------------------------------5757
7. EVAPORATOR ASSEMBLY7. EVAPORATOR ASSEMBLY------------------------------------------------------------------------------------------------------------------------------------5858
8. CONTROL WATER VALVE8. CONTROL WATER VALVE --------------------------------------------------------------------------------------------------------------------------------------6262
9. FLUSH WATER VALVE9. FLUSH WATER VALVE------------------------------------------------------------------------------------------------------------------------------------------------6363
10. CONTROLLER BOARD10. CONTROLLER BOARD ------------------------------------------------------------------------------------------------------------------------------------------------6464
[a]MODIFICATION[a]MODIFICATION ------------------------------------------------------------------------------------------------------------------------------------------------------------6464
[b] REPLACEMENT[b] REPLACEMENT----------------------------------------------------------------------------------------------------------------------------------------------------------6464
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E2AH5820209E2AH5820209
I. SPECIFICATIONSI. SPECIFICATIONS
1. DIMENSIONS/CONNECTIONS1. DIMENSIONS/CONNECTIONS
[a] FM-481AGE, FM-481AGE-N[a] FM-481AGE, FM-481AGE-N
Top View

22 E2AH5820209E2AH5820209
[b] FM-481AWGE, FM-481AWGE-N[b] FM-481AWGE, FM-481AWGE-N
Top View

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E2AH5820209E2AH5820209
[c] WITH STORAGE BIN (B-300_F)[c] WITH STORAGE BIN (B-300_F)

2. SPECIFICATIONS
[a] FM-481AGE
AC SUPPLY VOLTAGE
AMPERAGE
STARTING AMPERAGE
ELECTRIC CONSUMPTION
POWER FACTOR
POWER SUPPLY CAPACITY
1 PHASE 230V50Hz
7.5A (Ambient temp. 32°C, Water temp. 21°C)
30.5A
1522W (Ambient temp. 32°C, Water temp. 21°C)
88%
Min 3.1kVA (13.3A)
ICE PRODUCTION PER 24h Approx. 500 kg (Ambient temp. 10°C, Water temp. 10°C)
Approx. 425 kg (Ambient temp. 21°C, Water temp. 15°C)
Approx. 325 kg (Ambient temp. 32°C, Water temp. 21°C)
WATER CONSUMPTION PER 24h Approx. 0.500 m3(Ambient temp. 10°C, Water temp. 10°C)
Approx. 0.425 m3(Ambient temp. 21°C, Water temp. 15°C)
Approx. 0.325 m3(Ambient temp. 32°C, Water temp. 21°C)
SHAPE OF ICE
MAX. STORAGE CAPACITY Flake Not Applicable
DIMENSIONS (DRAWING No.)
EXTERIOR
INSULATION
CONNECTION -ELECTRIC
-WATER SUPPLY
-DRAIN
560(W) x 699(D) x 780(H) (348158)
Stainless Steel, Galvanized Steel (Rear)
Polyurethane Foam
Y-type Con. (with Plug)
Inlet G 3/4”(Connected at rear side)
Outlet R 3/4”x 2 (Connected at rear side)
ICE MAKING SYSTEM
HARVESTING SYSTEM Auger type Direct driven Auger (200W Gear Motor)
COMPRESSOR
CONDENSER HEAT REJECTION
EVAPORATOR
REFRIGERANT CONTROL
REFRIGERANT CHARGE
Hermetic Compressor Model RS80C2E-CAZ-219
Fin and Tube type forced air cooling
3150W (Ambient temp. 32°C, Water temp. 21°C)
Copper Tube on Cylinder
Thermostatic Expansion Valve
R404A 770g
BIN CONTROL SYSTEM
ICE MAKING WATER CONTROL Mechanical Bin Control (Time Delay Controlled) Float Switch and Water Valve
ELECTRICAL PROTECTION
COMPRESSOR PROTECTION
GEAR MOTOR PROTECTION
LOW WATER PROTECTION
BIN CONTROL PROTECTION
Class I Appliance
Auto-reset Overload Protector, Auto-reset Pressure Switch
Manual-reset Circuit Breaker, Auto-reset Thermal Protector
Float Switch and CM Controller
Mechanical Switch
WEIGHT
PACKAGE Net weight 97 kg / Gross weight 118 kg Carton 671mm(W) x 820mm(D) x 910mm(H)
ACCESSORIES Scoop, Mounting Bracket, Installation Kit
OPERATION CONDITIONS
AMBIENT TEMP.
WATER SUPPLY TEMP.
WATER SUPPLY PRESSURE
VOLTAGE RANGE
5-40°C
5-35°C
0.5-8 bar (0.05-0.8MPa)
Rated Voltage ±10%
We reserve the right to make changes in specifications and design without prior notice.
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[b] FM-481AWGE
AC SUPPLY VOLTAGE
AMPERAGE
STARTING AMPERAGE
ELECTRIC CONSUMPTION
POWER FACTOR
POWER SUPPLY CAPACITY
1 PHASE 230V50Hz
6.7A (Ambient temp. 32°C, Water temp. 21°C)
30.5A
1321W (Ambient temp. 32°C, Water temp. 21°C)
86%
Min 3.1kVA (13.3A)
ICE PRODUCTION PER 24h Approx. 420 kg (Ambient temp. 10°C, Water temp. 10°C)
Approx. 380 kg (Ambient temp. 21°C, Water temp. 15°C)
Approx. 340 kg (Ambient temp. 32°C, Water temp. 21°C)
WATER CONSUMPTION PER 24h Approx. 2.022 m3(Ambient temp. 10°C, Water temp. 10°C)
Approx. 2.244 m3(Ambient temp. 21°C, Water temp. 15°C)
Approx. 2.822 m3(Ambient temp. 32°C, Water temp. 21°C)
SHAPE OF ICE
MAX. STORAGE CAPACITY Flake Not Applicable
DIMENSIONS (DRAWING No.)
EXTERIOR
INSULATION
CONNECTION -ELECTRIC
-WATER SUPPLY
-DRAIN
560(W) x 699(D) x 780(H) (348159)
Stainless Steel, Galvanized Steel (Rear)
Polyurethane Foam
Y-type Con. (with Plug)
Inlet G 3/4”(Connected at rear side)
Cond. Inlet Rc 1/2”(Connected at rear side)
Outlet R 3/4”x 2 (Connected at rear side)
Cond. Outlet Rc 3/8”(Connected at rear side)
ICE MAKING SYSTEM
HARVESTING SYSTEM Auger type Direct driven Auger (200W Gear Motor)
COMPRESSOR
CONDENSER
EVAPORATOR
REFRIGERANT CONTROL
REFRIGERANT CHARGE
Hermetic Compressor Model RS80C2E-CAZ-219
Water cooled, Tube in Tube Type
Copper Tube on Cylinder
Thermostatic Expansion Valve
R404A 450g
BIN CONTROL SYSTEM
ICE MAKING WATER CONTROL Mechanical Bin Control (Time Delay Controlled) Float Switch and Water Valve
ELECTRICAL PROTECTION
COMPRESSOR PROTECTION
GEAR MOTOR PROTECTION
LOW WATER PROTECTION
BIN CONTROL PROTECTION
Class I Appliance
Auto-reset Overload Protector, Auto-reset Pressure Switch
Manual-reset Circuit Breaker, Auto-reset Thermal Protector
Float Switch and CM Controller
Mechanical Switch
WEIGHT
PACKAGE Net weight 97 kg / Gross weight 118 kg Carton 671mm(W) x 820mm(D) x 910mm(H)
ACCESSORIES Scoop, Mounting Bracket, Installation Kit
OPERATION CONDITIONS
AMBIENT TEMP.
WATER SUPPLY TEMP.
WATER SUPPLY PRESSURE
VOLTAGE RANGE
5-40°C
5-35°C
0.5-8 bar (0.05-0.8MPa)
Rated Voltage ±10%
We reserve the right to make changes in specifications and design without prior notice.
E2AH5820209
5

[c] FM-481AGE-N
AC SUPPLY VOLTAGE
AMPERAGE
STARTING AMPERAGE
ELECTRIC CONSUMPTION
POWER FACTOR
POWER SUPPLY CAPACITY
1 PHASE 230V50Hz
7.15A (Ambient temp. 32°C, Water temp. 21°C)
30.5A
1464W (Ambient temp. 32°C, Water temp. 21°C)
89%
Min 2.2kVA (9.6A)
ICE PRODUCTION PER 24h Approx. 430 kg (Ambient temp. 10°C, Water temp. 10°C)
Approx. 360 kg (Ambient temp. 21°C, Water temp. 15°C)
Approx. 290 kg (Ambient temp. 32°C, Water temp. 21°C)
WATER CONSUMPTION PER 24h Approx. 0.430 m3(Ambient temp. 10°C, Water temp. 10°C)
Approx. 0.360 m3(Ambient temp. 21°C, Water temp. 15°C)
Approx. 0.290 m3(Ambient temp. 32°C, Water temp. 21°C)
SHAPE OF ICE
MAX. STORAGE CAPACITY Nugget Not Applicable
DIMENSIONS (DRAWING No.)
EXTERIOR
INSULATION
CONNECTION -ELECTRIC
-WATER SUPPLY
-DRAIN
560(W) x 699(D) x 780(H) (350938)
Stainless Steel, Galvanized Steel (Rear)
Polyurethane Foam
Y-type Con. (with Plug)
Inlet G 3/4”(Connected at rear side)
Outlet R 3/4”x 2 (Connected at rear side)
ICE MAKING SYSTEM
HARVESTING SYSTEM Auger type Direct driven Auger (200W Gear Motor)
COMPRESSOR
CONDENSER HEAT REJECTION
EVAPORATOR
REFRIGERANT CONTROL
REFRIGERANT CHARGE
Hermetic Compressor Model RS80C2E-CAZ-219
Fin and Tube type forced air cooling
2500W (Ambient temp. 32°C, Water temp. 21°C)
Copper Tube on Cylinder
Thermostatic Expansion Valve
R404A 770g
BIN CONTROL SYSTEM
ICE MAKING WATER CONTROL Mechanical Bin Control (Time Delay Controlled) Float Switch and Water Valve
ELECTRICAL PROTECTION
COMPRESSOR PROTECTION
GEAR MOTOR PROTECTION
LOW WATER PROTECTION
BIN CONTROL PROTECTION
Class I Appliance
Auto-reset Overload Protector, Auto-reset Pressure Switch
Manual-reset Circuit Breaker, Auto-reset Thermal Protector
Float Switch and CM Controller
Mechanical Switch
WEIGHT
PACKAGE Net weight 97 kg / Gross weight 118 kg Carton 671mm(W) x 820mm(D) x 910mm(H)
ACCESSORIES Scoop, Mounting Bracket, Installation Kit
OPERATION CONDITIONS
AMBIENT TEMP.
WATER SUPPLY TEMP.
WATER SUPPLY PRESSURE
VOLTAGE RANGE
5-40°C
5-35°C
0.5-8 bar (0.05-0.8MPa)
Rated Voltage ±10%
We reserve the right to make changes in specifications and design without prior notice.
6
E2AH5820209

[d] FM-481AWGE-N
AC SUPPLY VOLTAGE
AMPERAGE
STARTING AMPERAGE
ELECTRIC CONSUMPTION
POWER FACTOR
POWER SUPPLY CAPACITY
1 PHASE 230V50Hz
6.74A(Ambient temp. 32°C, Water temp. 21°C)
30.5A
1356W (Ambient temp. 32°C, Water temp. 21°C)
87%
Min 2.0kVA (8.7A)
ICE PRODUCTION PER 24h Approx. 380 kg (Ambient temp. 10°C, Water temp. 10°C)
Approx. 350 kg (Ambient temp. 21°C, Water temp. 15°C)
Approx. 320 kg (Ambient temp. 32°C, Water temp. 21°C)
WATER CONSUMPTION PER 24h Approx. 1.988 m3(Ambient temp. 10°C, Water temp. 10°C)
Approx. 2.304 m3(Ambient temp. 21°C, Water temp. 15°C)
Approx. 2.746 m3(Ambient temp. 32°C, Water temp. 21°C)
SHAPE OF ICE
MAX. STORAGE CAPACITY Nugget Not Applicable
DIMENSIONS (DRAWING No.)
EXTERIOR
INSULATION
CONNECTION -ELECTRIC
-WATER SUPPLY
-DRAIN
560(W) x 699(D) x 780(H) (350939)
Stainless Steel, Galvanized Steel (Rear)
Polyurethane Foam
Y-type Con. (with Plug)
Inlet G 3/4”(Connected at rear side)
Cond. Inlet Rc 1/2”(Connected at rear side)
Outlet R 3/4”x 2 (Connected at rear side)
Cond. Outlet Rc 3/8”(Connected at rear side)
ICE MAKING SYSTEM
HARVESTING SYSTEM Auger type Direct driven Auger (200W Gear Motor)
COMPRESSOR
CONDENSER
EVAPORATOR
REFRIGERANT CONTROL
REFRIGERANT CHARGE
Hermetic Compressor Model RS80C2E-CAZ-219
Water cooled, Tube in Tube Type
Copper Tube on Cylinder
Thermostatic Expansion Valve
R404A 450g
BIN CONTROL SYSTEM
ICE MAKING WATER CONTROL Mechanical Bin Control (Time Delay Controlled) Float Switch and Water Valve
ELECTRICAL PROTECTION
COMPRESSOR PROTECTION
GEAR MOTOR PROTECTION
LOW WATER PROTECTION
BIN CONTROL PROTECTION
Class I Appliance
Auto-reset Overload Protector, Auto-reset Pressure Switch
Manual-reset Circuit Breaker, Auto-reset Thermal Protector
Float Switch and CM Controller
Mechanical Switch
WEIGHT
PACKAGE Net weight 97 kg / Gross weight 118 kg Carton 671mm(W) x 820mm(D) x 910mm(H)
ACCESSORIES Scoop, Mounting Bracket, Installation Kit
OPERATION CONDITIONS
AMBIENT TEMP.
WATER SUPPLY TEMP.
WATER SUPPLY PRESSURE
VOLTAGE RANGE
5-40°C
5-35°C
0.5-8 bar (0.05-0.8MPa)
Rated Voltage ±10%
We reserve the right to make changes in specifications and design without prior notice.
E2AH5820209
7

88 E2AH5820209E2AH5820209
II. GENERAL INFORMATIONII. GENERAL INFORMATION
1. CONSTRUCTION1. CONSTRUCTION
Modular flaker model FM-481AGE/AWGE(-N) includes Water Supply, Evaporator,Modular flaker model FM-481AGE/AWGE(-N) includes Water Supply, Evaporator,
Compressor, Condenser and Control Assemblies. As the unit is not equipped with an IceCompressor, Condenser and Control Assemblies. As the unit is not equipped with an Ice
Storage Bin, this must be purchased separately as an optional extra.Storage Bin, this must be purchased separately as an optional extra.
Pressure SwitchPressure Switch
Control BoxControl Box
EvaporatorEvaporator GearMotorGearMotor
Flush Water ValveFlush Water Valve
Ice ChuteIce Chute Control Water ValveControl Water Valve
ReservoirReservoir
CompressorCompressor
DrierDrier

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ICE MAKING UNITICE MAKING UNIT
Hex BoltHex Bolt
CutterCutter Extruding HeadExtruding Head
Belt HeaterBelt Heater
Socket Head Cap ScrewSocket Head Cap Screw
w/ Plastic Sealw/ Plastic Seal
CasingCasing AugerAuger
Mechanical SealMechanical Seal
Socket Head Cap ScrewSocket Head Cap Screw
HousingHousing
CouplingCoupling
GearMotorGear Motor
Rotation SensorRotation Sensor

2. CONTROLLER BOARD
Starting from the FM-481 model change, the electric control circuit has been changed from
a Timer Board to a Controller Board. The Controller Board consists of the Operation Board
(Controller Board - Operation), the Main Board (Controller Board -Main) and the Sub Board
(Sub Board - Current). The Main Board is common for all the auger type icemakers except
for the Dip Switch settings.
The Operation Board is equipped with the Display (7 segments, 2 digits) and the three
Operation Buttons “ICE”, “STOP”and “OPTION”which are for checking the operating
conditions during servicing and user operation.
The Main Board is equipped with Relays for the Compressor, Gear Motor, Control Water
Valve and Flush Water Valve.
[a] OPERATION PANEL
Positioned on the left side of the Control Box are the Operation Switch (Run/Stop) and Gear
Motor Protector (3A), and on the front side are the Display and Ice, Stop and Option
Buttons.
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[b] DETAILS OF FUNCTIONS
Operation Mode Display Indications
Item Display Indication Details
Icemaking ICE
DRAIN
STOP
Illuminates:
1) During icemaking cycle, or
2) When Storage Bin is full
Automatic Drain ICE
DRAIN
STOP
Illuminates:
1) For 15 minutes during automatic drain cycle after 6 hours
in continuous icemaking cycle from the last drain cycle,or,
after 1 hour with Storage Bin full, or
2) When Ice Button is pushed with Stop Lamp blinking
Manual Stop ICE
DRAIN
STOP
Illuminates when Stop Button is pushed àBlinks for 15
minutes (drain control) àIlluminates constantly (end of drain
control) àTurn OFF the power supply (See instruction label)
Interlock Error
(“E__”indication)
ICE
DRAIN
STOP
Blinks in case of interlock error àIndicates “E__”àPossible
cause can be located by the error code table.
Non-Interlock Error No indication for non-interlock errors. Check error records for
non-interlock stoppages (“c__”indication).
Button Operations
Operator Indication, Function Button Operation
Start icemaking Ice Button
User Stop icemaking after drain Stop Button
Indicate total compressor operating
hours Option Button
Indicate cycle time Option Button + Ice Button
Indicate error records Option Button + Stop Button
Indicate ongoing non-interlock error Option Button + Stop Button + Stop Button after “—”
indication
Delete error records Operation Switch + Stop Button + Option Button
Service
Personnel
Service mode Operation Switch + Option Button
Factory Delete total compressor operating hours + Production line inspection
mode
Operation Switch + Ice Button + Stop Button + Option
Button
Note: In case of interlock error (“E__”indication), the icemaker will not respond to the
user’s button operation.
If the icemaker has stopped because of anon-interlock error, the user’s button
operation can change the indication,but the icemaking or drain cycle cannot start
until the error is cancelled.
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11

Basic Control Sequences
Start icemaking:
Water supply àReservoir fills àGear Motor ON àCompressor ON after 5 minutes
Stop drain:
Compressor OFFàGear Motor OFF after 5 minutes àWater supply àReservoir fills
àFlush Water Valve ON àFlush Water Valve OFF after 10 minutes
Bin full (self-contained type):
Bin Control Switch continuously OFF for 7 seconds àCompressor OFF àGear
Motor OFF after 5 minutes àBin Control Switch continuously ON for 7 seconds à
Icemaking starts
Bin full (modular type):
Bin Control Switch continuously OFF for 7 seconds àCompressor and Gear Motor
OFF àBin Control Switch continuously ON for 7 seconds àIcemaking starts
Automatic drain:
After 6 hours from the last drain cycle or after 1 hour with Storage Bin full
Service mode:
Shortens the 5 minute delay before the initial icemaking cycle for ease of service
(Water supply àReservoir fills àGear Motor ON àCompressor ON after 30
seconds)
Production line inspection mode:
Switches to the following controls for 30 minutes to shorten the finished product
inspection and resets automatically after 30 minutes.
Compressor start delay at the beginning of icemaking cycle: 5 minutes à10
seconds
Gear Motor stop delay at the end of icemaking cycle: 5 minutes à10 seconds
No error records, Dip Switch setting indication at startup
Intermittent operation of Control Water Valve in case of low water: 5 minutes
OFF, 5 minutes ON à10 seconds OFF, 5 minutes ON
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[c] MAIN BOARD LAYOUT
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13
LOT NO. STAMP
K6OPERATION BOARD
K3FAN MOTOR FOR CONTROL BOX
12V DC OUTPUT
K2CONTROL WATER VALVE
K8ROTATION SENSOR
K4GEAR MOTOR SENSOR
K7BIN CONTROL SWITCH
K7PRESSURE SWITCH
K2FLUSH WATER VALVE
K124V AC INPUT
DIP SWITCH
K5FLOAT SWITCH

[d] SUB BOARD LAYOUT
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E2AH5820209
CN1 MAIN BOARD
12V DC *
DIP SWITCH
* Note: As the previous Timer Board marking is applied, the Sub
Board is marked 24V. But the actual input is 12V.

[e] SETTING AND CHECKING OPERATION
The Controller Board has the following functions for setting and checking:
(1)Shorten startup time
(2)Indicate total operating hours
(3)Indicate error record
(4)Delete error record
(5)Indicate cycle time
(6)Apply to any model by adjusting Dip Switch
(1) Shorten startup time
Starting from the FM-481 model change, the startup control has been changed to “Power
ON àFloat Tank fills up àGear Motor starts àCompressor starts after 5 min (formerly 1
min)”.
For the initial startup after the power supply is turned on, the Compressor start delay of “5
min”can be shortened to “30 sec”by the following button operation.
(This is useful to shorten maintenance and service operation, but could be a cause of
trouble if the icemaker is started up with ice still remaining inside the Evaporator Casing.)
Button Operation: (Power supply ON, Operation Switch on “STOP”)
1) While pressing the Option Button, move the Operation Switch to the “RUN”position.
2) Release the Option Button when the Display shows the total compressor operating hours
(_ _ thousand hours).
3) The Display illuminates “ICE”, and the icemaker starts up in the shortened startup mode.
(2) Indicate total operating hours
The total operating hours are indicated in two digits (_ _ thousand hours) by the following
button operation. The total operating hours indicated may be shorter than actual time and
should be used to determine the required maintenance and part replacement. The hours
indicated cannot be reset.
Button Operation: (Power supply ON, Operation Switch on “RUN”)
1) Only while the Option Button is pressed, the Display changes from the normal indication
to the total operating hours.
2) When the Option Button is released, the Display changes from the total operating hours
back to the normal indication.
(ex.)
“00”is indicated for total operating hours of 0 to 999 hours.
“01”is indicated for total operating hours of 1,000 to 1,999 hours.
E2AH5820209
15

“98”is indicated for total operating hours of 98,000 to 98,999 hours.
“99”is indicated for total operating hours of 99,000 hours and more.
(The indication of total operating hours is up to “99”.)
If the Display shows “- -”while the Option Button is pressed, the Controller Board must have
a problem (The icemaker can continue normal icemaking operation but cannot memorize
the total operating hours and error record).
(3) Indicate error record
Use this function to get detailed information on the icemaker’s condition when maintaining
or servicing the icemaker.
The error record is indicated by the following button operation and remains even if the power
is turned off.
The indicated error record may include “c1”to “c4”errors as well as “E0”to“EF”errors when
problems or stoppages have occurred. Those errors are recorded for low water (c1),
abnormal head pressure (c2) and drain error (c4).
For example, if the indicated error record includes “c2”during inspection, check the
Condenser and vicinity to locate the cause of abnormal head pressure.
Button Operation: (Power supply ON, Operation Switch on “RUN”)
1) Keep on pressing the Option Button until step 4).
2) The Display changes from the normal indication to the total operating hours.
3) (While pressing the Option Button) Press the Stop Button once.
4) The Display indicates the error record.
5) Release the Option Button. The Display changes back to the normal indication.
(ex.)
The Display indicates the record of the last eight errors from the latest to the oldest for 1 sec
each.
If there is no error record, the Display indicates “- -“.
If there is a record of three errors “E0”(latest), “E1”and “E2”(oldest), the Display indicates
“E0”(1 sec) à“E1”(1 sec) à“E2”(1 sec) à“- -“. The “- -“indication means there is no
more error record.
The icemaker may stop icemaking operation even when the Display is illuminating “ICE”. In
this case, the Bin Control Switch may have operated, or the icemaker may be in the error
“c1”or “c2”. To identify the cause during maintenance or service, check the ongoing error
by the following button operation. If no error record is indicated, the cause of the above
suspension is determined to be the Bin Control Switch operation.
Button Operation:
1) Keep on pressing the Option Button until step 7).
2) The Display changes from the normal indication to the total operating hours.
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3) (While pressing the Option Button) Press the Stop Button once.
4) The Display indicates the error record.
5) Check that the error record indication becomes “- -“.
6) (While pressing the Option Button) Press the Stop Button once again.
7) The Display indicates the error record (ongoing error).
8) Release the Option Button. The Display changes back to the normal indication.
(ex.)
If there is no ongoing error, the Display indicates “- -“.
If the icemaker is in the errors “E0”, “c1”and “c2”, the Display repeatedly indicates “E0”(1
sec) à“c1”(1 sec) à“c2”(1 sec).
(4) Delete error record
The error record is not deleted by turning off the power supply but is deleted by the following
button operation. To make the next service diagnosis easier, it is recommended to delete
the error record during maintenance or service.
Button Operation: (Power supply ON, Operation Switch on “STOP”)
1) While pressing both the Option Button and Stop Button together, move the Operation
Switch to the “RUN”position.
2) When the Display illuminates “ICE”, release the Stop Button first and then the Option
Button.
(5) Indicate cycle time
The cycle time to estimate the current ice production capacity is indicated by the following
button operation.
This cycle time means the time since the Float Tank fills up during Compressor operation
until the next icemaking water supply starts. The last five cycles are recorded.
This record is deleted when the power supply is turned off.
Button Operation: (Power supply ON, Operation Switch on “RUN”)
1) Keep on pressing the Option Button until step 4).
2) The Display changes from the normal indication to the total operating hours.
3) (While pressing the Option Button) Press the Ice Button once.
4) The Display indicates the cycle time.
5) Release the Option Button. The Display changes back to the normal indication.
As the Display can indicate only two digits, a complex system is used to indicate the cycle
time record. The max five cycles are indicated from the latest to the oldest as “_ _”min “_ _”
sec …… “_ _”min “_ _”sec. The Display illuminates “ICE”after all the record has been
indicated.
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