Hoshizaki FM-170,300AKE(-N) Service Manual
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Hoshizaki FM-170,300AKE(-N) Service Manual

Modular ice maker
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MODULAR ICE MAKER
FM-170,300AKE(-N)
FM-480,600AKE(-N)
FM-480,600AWKE(-N)
FM-750,1000AKE(-N)
FM-1200,1800ALKE(-N)
HOSHIZAKI
MODEL
SERVICE MANUAL
NO.
F054-812
ISSUED:
AUG. 3, 2010
REVISED: APR. 25, 2014

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Summary of Contents for Hoshizaki FM-170,300AKE(-N)

  • Page 1 F054-812 ISSUED: AUG. 3, 2010 REVISED: APR. 25, 2014 HOSHIZAKI MODULAR ICE MAKER MODEL FM-170,300AKE(-N) FM-480,600AKE(-N) FM-480,600AWKE(-N) FM-750,1000AKE(-N) FM-1200,1800ALKE(-N) SERVICE MANUAL...

  • Page 2: Table Of Contents

    CONTENTS PAGE I. SPECIFICATIONS -------------------------------------------------------------------------------------- 1 1. DIMENSIONS/SPECIFICATIONS ----------------------------------------------------------------- 1 [a] FM-170AKE ----------------------------------------------------------------------------------------- 1 [b] FM-170AKE-N -------------------------------------------------------------------------------------- 2 [c] FM-300AKE------------------------------------------------------------------------------------------ 3 [d] FM-300AKE-N -------------------------------------------------------------------------------------- 5 [e] FM-480AKE ----------------------------------------------------------------------------------------- 7 [f] FM-480AKE-N --------------------------------------------------------------------------------------- 9 [g] FM-480AWKE--------------------------------------------------------------------------------------11 [h] FM-480AWKE-N ----------------------------------------------------------------------------------13 [i] FM-600AKE -----------------------------------------------------------------------------------------15 [j] FM-600AKE-N --------------------------------------------------------------------------------------17 [k] FM-600AWKE --------------------------------------------------------------------------------------19 [l] FM-600AWKE-N -----------------------------------------------------------------------------------21...
  • Page 3 [e] FM-480AWKE(-N), FM-600AWKE(-N)-------------------------------------------------------55 2. WIRING DIAGRAM -----------------------------------------------------------------------------------56 [a] WIRING DIAGRAM -------------------------------------------------------------------------------56 [b] CONTROL BOX LAYOUT ----------------------------------------------------------------------84 3. ICEMAKING MECHANISM -------------------------------------------------------------------------94 [a] EVAPORATOR (CASING)----------------------------------------------------------------------95 [b] AUGER ----------------------------------------------------------------------------------------------95 [c] EXTRUDING HEAD (BEARING) --------------------------------------------------------------95 [d] HOUSING-------------------------------------------------------------------------------------------95 [e] MECHANICAL SEAL-----------------------------------------------------------------------------95 [f] COUPLING (SPLINE JOINT) -------------------------------------------------------------------95 [g] GEAR MOTOR ------------------------------------------------------------------------------------95 [h] BELT HEATER ------------------------------------------------------------------------------------96 [i] REMOVABLE FLANGE --------------------------------------------------------------------------96...
  • Page 4 [m] FM-750AKE-------------------------------------------------------------------------------------- 123 [n] FM-750AKE-N ----------------------------------------------------------------------------------- 124 [o] FM-1000AKE ------------------------------------------------------------------------------------- 125 [p] FM-1000AKE-N---------------------------------------------------------------------------------- 126 [q] FM-1200ALKE ----------------------------------------------------------------------------------- 127 [r] FM-1200ALKE-N--------------------------------------------------------------------------------- 127 [s] FM-1800ALKE ----------------------------------------------------------------------------------- 128 [t] FM-1800ALKE-N --------------------------------------------------------------------------------- 128 IV. SERVICE DIAGNOSIS --------------------------------------------------------------------------- 129 1. NO ICE PRODUCTION ---------------------------------------------------------------------------- 129 2.

  • Page 5: Specifications

    I. SPECIFICATIONS 1. DIMENSIONS/SPECIFICATIONS [a] FM-170AKE...

  • Page 6: [B] Fm-170Ake-N

    [b] FM-170AKE-N...

  • Page 7: [C] Fm-300Ake

    [c] FM-300AKE (Auxiliary code: D-0 or earlier)
  • Page 8 (Auxiliary code: D-1 or later)

  • Page 9: [D] Fm-300Ake-N

    [d] FM-300AKE-N (Auxiliary code: D-0 or earlier)
  • Page 10 (Auxiliary code: D-1 or later)

  • Page 11: [E] Fm-480Ake

    [e] FM-480AKE (Auxiliary code: D-0 or earlier)
  • Page 12 (Auxiliary code: D-1 or later)

  • Page 13: [F] Fm-480Ake-N

    [f] FM-480AKE-N (Auxiliary code: D-0 or earlier)
  • Page 14 (Auxiliary code: D-1 or later)

  • Page 15: [G] Fm-480Awke

    [g] FM-480AWKE (Auxiliary code: D-0 or earlier)
  • Page 16 (Auxiliary code: D-1 or later)

  • Page 17: [H] Fm-480Awke

    [h] FM-480AWKE-N (Auxiliary code: D-0 or earlier)
  • Page 18 (Auxiliary code: D-1 or later)

  • Page 19: [I] Fm-600Ake

    [i] FM-600AKE (Auxiliary code: D-0 or earlier)
  • Page 20 (Auxiliary code: D-1 or later)

  • Page 21: [J] Fm-600Ake

    [j] FM-600AKE-N (Auxiliary code: D-0 or earlier)
  • Page 22 (Auxiliary code: D-1 or later)

  • Page 23: [K] Fm-600Awke

    [k] FM-600AWKE (Auxiliary code: D-0 or earlier)
  • Page 24 (Auxiliary code: D-1 or later)

  • Page 25: [L] Fm-600Awke

    [l] FM-600AWKE-N (Auxiliary code: D-0 or earlier)
  • Page 26 (Auxiliary code: D-1 or later)

  • Page 27: [M] Fm-750Ake

    [m] FM-750AKE (Auxiliary code: D-0 or earlier)
  • Page 28 (Auxiliary code: D-1 or later)

  • Page 29: [N] Fm-750Ake

    [n] FM-750AKE-N (Auxiliary code: D-0 or earlier)
  • Page 30 (Auxiliary code: D-1 or later)

  • Page 31: [O] Fm-1000Ake

    [o] FM-1000AKE (Auxiliary code: D-0 or earlier)
  • Page 32 (Auxiliary code: D-1 or later)

  • Page 33: [P] Fm-1000Ake

    [p] FM-1000AKE-N (Auxiliary code: D-0 or earlier)
  • Page 34 (Auxiliary code: D-1 or later)

  • Page 35: [Q] Fm-1200Alke

    [q] FM-1200ALKE (Auxiliary code: D-0 or earlier)
  • Page 36 (Auxiliary code: D-1 or later)

  • Page 37: [R] Fm-1200Alke

    [r] FM-1200ALKE-N (Auxiliary code: D-0 or earlier)
  • Page 38 (Auxiliary code: D-1 or later)

  • Page 39: [S] Fm-1800Alke

    [s] FM-1800ALKE (Auxiliary code: D-0 or earlier)
  • Page 40 (Auxiliary code: D-1 or later)

  • Page 41: [T] Fm-1800Alke

    [t] FM-1800ALKE-N (Auxiliary code: D-0 or earlier)
  • Page 42 (Auxiliary code: D-1 or later)

  • Page 43: Construction

    2. CONSTRUCTION [a] FM-170AKE(-N) Control Water Valve Bin Control Switch Reservoir Control Box Evaporator Air-Cooled Condenser Flush Water Valve Gear Motor Fan Motor Compressor...

  • Page 44: [B] Fm-300Ake(-N), Fm-480Ake(-N), Fm-600Ake

    [b] FM-300AKE(-N), FM-480AKE(-N), FM-600AKE(-N) Bin Control Switch Control Water Valve Fan Motor Reservoir Control Box Evaporator Air-Cooled Condenser Flush Water Valve Gear Motor Compressor The bin control switch and spout have been changed fromD-1. See ”[g] BIN CONTROL SWITCH AND SPOUT” for reference.

  • Page 45: [C] Fm-480Awke(-N), Fm-600Awke

    [c] FM-480AWKE(-N), FM-600AWKE(-N) Control Water Valve Bin Control Switch Reservoir Evaporator Water-Cooled Condenser Flush Water Valve Control Box Gear Motor Fan Motor Compressor * FM-600AWKE(-N) only The bin control switch and spout have been changed fromD-1. See ”[g] BIN CONTROL SWITCH AND SPOUT”...

  • Page 46: [D] Fm-750Ake(-N), Fm-1000Ake

    [d] FM-750AKE(-N), FM-1000AKE(-N) Spout * Air-Cooled Condenser Control Water Valve Fan Motor Bin Control Switch Evaporator Gear Motor Control Box Reservoir Flush Water Valve Compressor Evaporator Gear Motor Bin Control Switch * * The bin control switch and spout shown here are for the auxiliary code A-2 or earlier.

  • Page 47: [E] Fm-1200Alke

    [e] FM-1200ALKE(-N) Spout * Control Water Valve Reservoir Control Box Evaporator Pressure Regulator Evaporator Expansion Valve Solenoid Valve * The bin control switch and spout shown here are for the auxiliary code A-3 or earlier. For the auxiliary codes from A-4 to D-0, they are the same as those for FM-170/300/480/600.

  • Page 48: [F] Fm-1800Alke

    [f] FM-1800ALKE(-N) Spout * Control Water Valve Control Box Reservoir Evaporator Expansion Valve Bin Control Switch * Solenoid Valve * The bin control switch and spout shown here are for the auxiliary code A-3 or earlier. For the auxiliary codes from A-4 Evaporator to D-0, they are the same as those for FM-170/300/480/600.

  • Page 49: [G] Bin Control Switch And Spout

    [g] BIN CONTROL SWITCH AND SPOUT [FM-300AKE(-N), FM-480AKE(-N), FM-600AKE(-N), FM-480AWKE(-N), FM-600AWKE(-N), FM-750AKE(-N), FM-1000 AKE(N), FM-1200ALKE(N), FM-1800ALKE(N) (Auxiliary code: D-1 or later)] Spout Cover Reed Switch (Bin Control) Spring Actuator Spout Reed Switch (Spout Switch) Chute...

  • Page 50: Maintenance And Cleaning Instructions

    II. MAINTENANCE AND CLEANING INSTRUCTIONS IMPORTANT 1. This icemaker must be maintained individually, referring to the instruction manual and labels provided with the icemaker. 2. To achieve optimum icemaker performance, the following parts need periodic inspection and maintenance: Extruding head (upper bearing) Housing (lower bearing) Mechanical seal These parts should be inspected after two years from installation or 10,000 hours of...

  • Page 51: Gear Motor

    Attach the mechanical seal with its floating sheet facing the housing. After replacement, there should be no water leakage from the mating surface. Note: The water leakage will exceed the above amount with scale/dirt build up or damage on the mating surface. Replace the mechanical seal when the water leakage exceeds 0.5 mL/h.

  • Page 52: Control Water Valve

    6. CONTROL WATER VALVE 1) Disconnect the power source. 2) Close the water supply tap. 3) Disconnect the inlet hose from the water valve. 4) Clean the filter packing using a brush. 5) Replace the filter packing and inlet hose in their correct positions. 6) Open the water supply tap.

  • Page 53: Cleaning Of Water System

    7. CLEANING OF WATER SYSTEM WARNING 1. HOSHIZAKI recommends cleaning this unit at least twice a year. More frequent cleaning, however, may be required in some existing water conditions. 2. Do not touch the operation switch with damp hands. 3. Always wear rubber gloves, eye protectors, apron, etc. for safe handling of the cleaner and sanitiser.
  • Page 54 3) Remove all ice from the storage bin to avoid contamination by the cleaner. 4) Unplug the icemaker. Remove the top and front panels. 5) Remove the cover of the reservoir. Remove any loose debris or scale. 6) Carefully fill the reservoir with the solution to the overflow point. If necessary, use a small brush to clean the inside of the reservoir.

  • Page 55: Technical Information

    III. TECHNICAL INFORMATION 1. WATER CIRCUIT AND REFRIGERANT CIRCUIT [a] FM-170AKE(-N), FM-300AKE(-N), FM-480AKE(-N), FM-600AKE(-N) * FM-480AKE(-N), FM-600AKE(-N) only 350 mm 800 mm Pressure Switch [FM-170AKE(-N)] Cut-out 1.57 + 0.15/0 MPa Cut-in 0.98 ± 0.15 MPa [FM-300AKE(-N)] Cut-out 2.85 + 0.15/0 MPa Cut-in 2.30 ±...

  • Page 56: [B] Fm-750Ake(-N), Fm-1000Ake

    [b] FM-750AKE(-N), FM-1000AKE(-N) 350 mm Pressure Switch Cut-out 3.14 + 0.15/0 MPa Cut-in 2.26 ± 0.15 MPa...

  • Page 57: [C] Fm-1200Alke

    [c] FM-1200ALKE(-N)

  • Page 58: [D] Fm-1800Alke

    [d] FM-1800ALKE(-N)

  • Page 59: E] Fm-480Awke(-N), Fm-600Awke(-N)

    [e] FM-480AWKE(-N), FM-600AWKE(-N) * FM-480AWKE(-N): 400 mm FM-600AWKE(-N): 800 mm Pressure Switch [FM-480AWKE(-N)] Cut-out 3.14 + 0.15/0 MPa Cut-in 2.26 ± 0.15 MPa [FM-600AWKE(-N)] Cut-out 2.65 + 0.15/0 MPa Cut-in 2.20 ± 0.15 MPa...

  • Page 60: Wiring Diagram

    2. WIRING DIAGRAM [a] WIRING DIAGRAM FM-170AKE(-N) (Auxiliary code: D-0 or earlier)
  • Page 61 FM-170AKE(-N) (Auxiliary code: D-1 or later)
  • Page 62 FM-300AKE(-N) (Auxiliary code: D-0 or earlier)
  • Page 63 FM-300AKE(-N) (Auxiliary code: D-1 or later)
  • Page 64 FM-480AKE(-N) (Auxiliary code: D-0 or earlier)
  • Page 65 FM-480AKE(-N) (Auxiliary code: D-1 or later)
  • Page 66 FM-480AWKE(-N) (Auxiliary code: D-0 or earlier)
  • Page 67 FM-480AWKE(-N) (Auxiliary code: D-1 or later)
  • Page 68 FM-600AKE(-N) (Auxiliary code: D-0 or earlier)
  • Page 69 FM-600AKE(-N) (Auxiliary code: D-1 or later)
  • Page 70 FM-600AWKE(-N) (Auxiliary code: D-0 or earlier)
  • Page 71 FM-600AWKE(-N) (Auxiliary code: D-1 or later)
  • Page 72 FM-750AKE(-N) [Auxiliary code: A-2 or earlier]...
  • Page 73 FM-750AKE(-N) [Auxiliary code: A-3 and B-0]...
  • Page 74 FM-750AKE(-N) [Auxiliary code: B-1 to D-0]...
  • Page 75 FM-750AKE(-N) [Auxiliary code: D-1 or later]...
  • Page 76 FM-1000AKE(-N) [Auxiliary code: A-2 or earlier]...
  • Page 77 FM-1000AKE(-N) [Auxiliary code: A-3 and B-0]...
  • Page 78 FM-1000AKE(-N) [Auxiliary code: B-1 to D-0]...
  • Page 79 FM-1000AKE(-N) [Auxiliary code: D-1 or later]...
  • Page 80 FM-1200ALKE(-N) [Auxiliary code: A-3 or earlier]...
  • Page 81 FM-1200ALKE(-N) [Auxiliary code: A-4 and B-0]...
  • Page 82 FM-1200ALKE(-N) [Auxiliary code: B-1 to D-0]...
  • Page 83 FM-1200ALKE(-N) [Auxiliary code: D-1 or later]...
  • Page 84 FM-1800ALKE(-N) [Auxiliary code: A-3 or earlier]...
  • Page 85 FM-1800ALKE(-N) [Auxiliary code: A-4 and B-0]...
  • Page 86 FM-1800ALKE(-N) [Auxiliary code: B-1 and D-0]...
  • Page 87 FM-1800ALKE(-N) [Auxiliary code: D-1 or later]...

  • Page 88: B] Control Box Layout

    [b] CONTROL BOX LAYOUT FM-170AKE(-N) CONTROLLER BOARD-MAIN CONTROLLER BOARD-OPERATION POWER RELAY (CONTROL WATER VALVE, ON BOARD) POWER RELAY (FLUSH WATER VALVE, ON BOARD) POWER RELAY (GEAR MOTOR, ON BOARD) POWER RELAY (COMPRESSOR, ON BOARD) POWER RELAY (GM DRIVE) OPERATION SWITCH CIRCUIT PROTECTOR (10A) SURGE ABSORBER (LIGHTENING ARRESTER) FUSE 3.15A...
  • Page 89 FM-300AKE(-N), FM-480AKE(-N) CONTROLLER BOARD-MAIN CONTROLLER BOARD-OPERATION POWER RELAY (CONTROL WATER VALVE, ON BOARD) POWER RELAY (FLUSH WATER VALVE, ON BOARD) POWER RELAY (GEAR MOTOR, ON BOARD) POWER RELAY (COMPRESSOR, ON BOARD) POWER RELAY (GM DRIVE) OPERATION SWITCH CIRCUIT PROTECTOR (10A: 300AKE / 20A: 480AKE) CAPACITOR (GM1) FUSE 3.15A TRANSFORMER...
  • Page 90 FM-480AWKE(-N) CONTROLLER BOARD-MAIN CONTROLLER BOARD-OPERATION POWER RELAY (CONTROL WATER VALVE, ON BOARD) POWER RELAY (FLUSH WATER VALVE, ON BOARD) POWER RELAY (GEAR MOTOR, ON BOARD) POWER RELAY (COMPRESSOR, ON BOARD) POWER RELAY (GM DRIVE) OPERATION SWITCH CIRCUIT PROTECTOR (20A) CAPACITOR (GM1) FUSE 3.15A TRANSFORMER...
  • Page 91 FM-600AKE(-N), FM-600AWKE(-N) CONTROLLER BOARD-MAIN CONTROLLER BOARD-OPERATION POWER RELAY (CONTROL WATER VALVE, ON BOARD) POWER RELAY (FLUSH WATER VALVE, ON BOARD) POWER RELAY (GEAR MOTOR, ON BOARD) POWER RELAY (COMPRESSOR, ON BOARD) POWER RELAY (GM DRIVE) POWER RELAY (COMPRESSOR) STARTER (COMPRESSOR) START CAPACITOR (COMPRESSOR) RUN CAPACITOR (COMPRESSOR) OPERATION SWITCH...
  • Page 92 FM-750AKE(-N), FM-1000AKE(-N) [Auxiliary code: B0 or earlier]...
  • Page 93 FM-1200ALKE(-N) [Auxiliary code: B0 or earlier]...
  • Page 94 FM-1800ALKE(-N) [Auxiliary code: B0 or earlier]...
  • Page 95 FM-750AKE(-N), FM-1200ALKE(-N) [Auxiliary code: B1 or later] CONTROLLER BOARD-MAIN CONTROLLER BOARD-OPERATION POWER RELAY (CONTROL WATER VALVE, ON BOARD) POWER RELAY (FLUSH WATER VALVE, ON BOARD) POWER RELAY (GEAR MOTOR, ON BOARD) POWER RELAY (COMPRESSOR, ON BOARD) POWER RELAY (GM DRIVE) OPERATION SWITCH CIRCUIT PROTECTOR (20A: 750AKE/10A: 1200ALKE) CAPACITOR (GM1)
  • Page 96 FM-1000AKE(-N) [Auxiliary code: B1 or later] CONTROLLER BOARD-MAIN CONTROLLER BOARD-OPERATION POWER RELAY (CONTROL WATER VALVE, ON BOARD) POWER RELAY (FLUSH WATER VALVE, ON BOARD) POWER RELAY (GEAR MOTOR, ON BOARD) POWER RELAY (COMPRESSOR, ON BOARD) POWER RELAY (GM DRIVE) POWER RELAY (COMPRESSOR) STARTER (COMPRESSOR) START CAPACITOR (COMPRESSOR) RUN CAPACITOR (COMPRESSOR)
  • Page 97 FM-1800ALKE(-N) [Auxiliary code: B1 or later] CONTROLLER BOARD-MAIN CONTROLLER BOARD-OPERATION POWER RELAY (CONTROL WATER VALVE, ON BOARD) POWER RELAY (FLUSH WATER VALVE, ON BOARD) POWER RELAY (GEAR MOTOR, ON BOARD) POWER RELAY (COMPRESSOR, ON BOARD) POWER RELAY (GM DRIVE) POWER RELAY (CONTROL WATER VALVE-2) POWER RELAY (FLUSH WATER VALVE) OPERATION SWITCH CIRCUIT PROTECTOR (10A)

  • Page 98: Icemaking Mechanism

    3. ICEMAKING MECHANISM Flake Type Nugget Type Screw Bolt Spring Washer Cutter Auger Extruding Head Packing - Spout Flange Mechanical Seal Pan Head O-Ring Machine Screw Belt Heater (provided for Hex. Head some models) Bolt W/ Sealing Bolt Washer Cover - Gear Motor Housing Coupling...

  • Page 99: A] Evaporator (Casing)

    [a] EVAPORATOR (CASING) The evaporator consists of a stainless steel icemaking cylinder coiled with a refrigeration pipe and wrapped together with a polyurethane foam insulation material. Water coming from the inlet into the evaporator will be frozen into ice. The ice spout is located on top of the evaporator.

  • Page 100: H] Belt Heater

    [h] BELT HEATER (provided on some models) The belt heater is provided to reduce the load of ice passing the extruding head during a freeze cycle and to prevent vapor lock during a flush cycle. [i] REMOVABLE FLANGE The flange used to be welded on the evaporator to fix the spout. But sometimes the extruding head applies excessive load on the evaporator to compress ice, resulting in breaking the welded joints.

  • Page 101: K] Chute, Bin Control Switch

    [k] CHUTE, BIN CONTROL SWITCH [FM-750/1000 (Auxiliary code: A-2 or earlier), FM-1200/1800 (Auxiliary code: A-3 or earlier)] The chute and bin control switch are caulked and combined. Ice formed in the evaporator casing passes through the spout, chute, and bin control switch and drops out of the unit bottom.
  • Page 102 [l] BIN CONTROL SWITCH [FM-170/300/480/600 (Auxiliary code: D0 or earlier), FM-750/1000 (Auxiliary code: A-3 to D0), FM-1200/1800 (Auxiliary code: A-4 to D0)] The bin control switch is composed of a proximity switch and actuator. When the chute fills up, ice will push up the actuator on top of the chute to switch off the proximity switch.
  • Page 103 The ice detector is different for flake icemaker and nugget icemaker. If incorrect detector is attached, the bin control function will not work. If the icemaking operation continues, the abnormal stop switch trips and the unit stops with an error. Be sure to attach the proper ice detector.

  • Page 104: N] Chute Switch

    [n] CHUTE SWITCH [FM-170/300/480/600 (Auxiliary code: D0 or earlier), FM-750/1000 (Auxiliary code: A-3 to D0), FM-1200/1800 (Auxiliary code: A-4 toD0)] The chute switch consists of a microswitch and a band securing the spout and chute. When the bin control switch breaks down, the band opens and presses the button on the microswitch (contacts open) to stop the icemaker (error code: EL).

  • Page 105: P] Crankcase Heater

    [p] CRANKCASE HEATER Equipments employing a large amount of refrigerant are provided with the crankcase Heater to prevent refrigerant migration to the compressor during off-cycles resulting in oil shortage at startup. The crankcase heater will be energized also when the user turns off the operation switch on the operation board.

  • Page 106: B] Timing Chart

    [b] TIMING CHART...

  • Page 107: Operation Board

    5. OPERATION BOARD [a] OPERATION BUTTONS ICE = When pressed in the STOP mode, the unit is supplied with water and starts icemaking operation. STOP = When pressed in the ICE mode, the unit stops icemaking operation and drains. MAINTENANCE A = Used for various maintenance operations. MAINTENANCE B = Used for model code setting.

  • Page 108: C] Displaying Compressor Operating Hours, Cycle Time, Model Number And Software Version

    2) 4) [c] DISPLAYING COMPRESSOR OPERATING HOURS, CYCLE TIME, MODEL NUMBER AND SOFTWARE VERSION Press and hold the maintenance A button, and press the ice button. The display shows the following items one by one every time the ice button is pressed. This function is available in the ice or stop mode.
  • Page 109 Note: 1. The display shows the next item if the ice button is pressed before one item appears in the display. 2. The display mode is cancelled if the maintenance A button is released. 3. The software version is displayed repeatedly while the maintenance A button is pressed. Release the maintenance A button to cancel the display mode.

  • Page 110: D] Displaying Error Log

    For accurate measurement, use a container to receive ice actually produced for 10 minutes, measure its weight, and calculate ice production per day. Repeat this three times to figure out the average. c) Model Number The display shows two digits. e.g.

  • Page 111: E] Resetting Error Log

    [e] RESETTING ERROR LOG With the operation switch in the “OFF” position, press and hold the stop and maintenance A buttons. Move the operation switch to the “ON” position. Release the buttons when the display shows the ice mode. Now the error log is reset. Do not reset more than necessary. [f] RESETTING COMPRESSOR OPERATING HOURS With the power switch turned off, press and hold the ice, stop and maintenance A buttons.

  • Page 112: Protectors

    6. PROTECTORS [a] INDICATION When an error occurs, “E_” or ”c_” will appear in the display. Some of the “c_” errors are not displayed and must be checked by the error log. When an operational error occurs, “E_” will appear and blink in the display on the operation board, and the icemaker will stop.

  • Page 113: Error Codes

    7. ERROR CODES Interlock Errors Code Error Condition Operation Reset Check/Repair Water leak from water circuit (reservoir, inlet Power supply, Icemaking Water c0 error occurs 2 times in Whole unit hose, outlet hose, hose Turn OFF - Leak a row. stops.
  • Page 114 Code Error Condition Operation Reset Check/Repair Low Voltage Low voltage sensing Power supply, Sensing Whole unit Low voltage sensing transformer circuit is Turn OFF - Transformer stops. Transformer open. Turn ON Circuit Open Power supply, Controller Board Whole unit Controller board IC fails. Turn OFF - Replace controller board.

  • Page 115: Performance Data

    8. PERFORMANCE DATA [a] FM-170AKE 0.18 0.16 0.14 0.12 3.85 14.5 3.75 13.5 3.65 1200 1000 The horizontal axis shows the ambient temperature. It refers to the data of at/wt=10/10, 21/15, 32/21, 40/35.

  • Page 116: B] Fm-170Ake-N

    [b] FM-170AKE-N 0.18 0.16 0.14 0.12 3.85 14.5 3.75 13.5 3.65 1200 1000 The horizontal axis shows the ambient temperature. It refers to the data of at/wt=10/10, 21/15, 32/21, 40/35.

  • Page 117: C] Fm-300Ake

    [c] FM-300AKE 0.35 0.25 0.15 2200 2000 1800 1600 1400 1200 1000 The horizontal axis shows the ambient temperature. It refers to the data of at/wt=10/10, 21/15, 32/21, 40/35.

  • Page 118: D] Fm-300Ake-N

    [d] FM-300AKE-N 0.35 0.25 0.15 2200 2000 1800 1600 1400 1200 1000 The horizontal axis shows the ambient temperature. It refers to the data of at/wt=10/10, 21/15, 32/21, 40/35.

  • Page 119: E] Fm-480Ake

    [e] FM-480AKE 0.55 0.45 0.35 0.25 2000 1800 1600 1400 1200 1000 The horizontal axis shows the ambient temperature. It refers to the data of at/wt=10/10, 21/15, 32/21, 40/35.

  • Page 120: F] Fm-480Ake-N

    [f] FM-480AKE-N 0.55 0.45 0.35 0.25 2000 1800 1600 1400 1200 1000 The horizontal axis shows the ambient temperature. It refers to the data of at/wt=10/10, 21/15, 32/21, 40/35.

  • Page 121: G] Fm-480Awke

    [g] FM-480AWKE 0.45 0.35 1750 1725 1700 1675 1650 The horizontal axis shows the ambient temperature. It refers to the data of at/wt=10/10, 21/15, 32/21, 40/35.

  • Page 122: H] Fm-480Awke-N

    [h] FM-480AWKE-N 0.45 0.35 1750 1725 1700 1675 1650 The horizontal axis shows the ambient temperature. It refers to the data of at/wt=10/10, 21/15, 32/21, 40/35.

  • Page 123: I] Fm-600Ake

    [i] FM-600AKE 0.65 0.55 0.45 10.5 2000 1800 1600 1400 1200 1000 20 30 40 50 The horizontal axis shows the ambient temperature. It refers to the data of at/wt=10/10, 21/15, 32/21, 40/35.

  • Page 124: J] Fm-600Ake-N

    [j] FM-600AKE-N 0.65 0.55 0.45 10.5 2000 1800 1600 1400 1200 1000 10 20 30 40 50 The horizontal axis shows the ambient temperature. It refers to the data of at/wt=10/10, 21/15, 32/21, 40/35.

  • Page 125: K] Fm-600Awke

    [k] FM-600AWKE 0.55 0.45 42.5 41.5 40.5 1750 1700 1650 1600 The horizontal axis shows the ambient temperature. It refers to the data of at/wt=10/10, 21/15, 32/21, 40/35.

  • Page 126: L] Fm-600Awke-N

    [l] FM-600AWKE-N 0.55 0.45 42.5 41.5 40.5 1750 1700 1650 1600 The horizontal axis shows the ambient temperature. It refers to the data of at/wt=10/10, 21/15, 32/21, 40/35.

  • Page 127: M] Fm-750Ake

    [m] FM-750AKE...

  • Page 128: N] Fm-750Ake-N

    [n] FM-750AKE-N...

  • Page 129: O] Fm-1000Ake

    [o] FM-1000AKE...

  • Page 130: P] Fm-1000Ake-N

    [p] FM-1000AKE-N...

  • Page 131: Q] Fm-1200Alke

    [q] FM-1200ALKE 1400 1300 1200 1100 1000 [r] FM-1200ALKE-N 1400 1300 1200 1100 1000 The horizontal axis shows the ambient temperature. It refers to the data of at/wt=10/10, 21/15, 32/21, 40/35.

  • Page 132: S] Fm-1800Alke

    [s] FM-1800ALKE 2000 1900 1800 1700 1600 1500 1400 1300 1200 1100 1000 [t] FM-1800ALKE-N 2000 1900 1800 1700 1600 1500 1400 1300 1200 1100 1000 The horizontal axis shows the ambient temperature. It refers to the data of at/wt=10/10, 21/15, 32/21, 40/35.

  • Page 133: Iv. Service Diagnosis

    IV. SERVICE DIAGNOSIS Display error records by operating the operation board (see “III. 5. [d] DISPLAYING ERROR LOG”). Check for a possible cause and service the unit. 1. NO ICE PRODUCTION PROBLEM POSSIBLE CAUSE REMEDY [1] The icemaker a) Power supply 1.
  • Page 134 PROBLEM POSSIBLE CAUSE REMEDY [3] (Continued) d) Pressure switch, 1. Dirty condenser fins. 1. Clean. condenser 2. Ambient temperature 2. Check for recommended thermistor too warm. temperature. 3. Fan not rotating. 3. Replace. 4. Condenser water 4. Check and get recommended pressure too low or off.

  • Page 135: Low Ice Production

    2. LOW ICE PRODUCTION PROBLEM POSSIBLE CAUSE REMEDY [1] Low ice a) Refrigerant line 1. Gas leaks. 1. See 1 - [5] - a). production 2. Refrigerant line 2. Replace the clogged clogged. component. 3. Overcharged. 3. Recharge. b) High-side 1.
  • Page 136 PROBLEM POSSIBLE CAUSE REMEDY [2] Overflow from a) Water supply 1. Water pressure too 1. Install a pressure reducing reservoir (Water high. valve. does not stop.) b) Water valve 1. Diaphragm does not 1. Clean or replace. close. c) Float switch 1.

  • Page 137: Service For Refrigerant Lines

    V. REMOVAL AND REPLACEMENT 1. SERVICE FOR REFRIGERANT LINES [a] SERVICE INFORMATION 1) Allowable Compressor Opening Time and Prevention of Lubricant Mixture [R404A/R134A] The compressor must not be opened more than 15 minutes in replacement or service. Do not mix lubricants of different compressors even if both are charged with the same refrigerant, except when they use the same lubricant.

  • Page 138: B] Refrigerant Recovery

    7) Evacuation, Vacuum Pump and Refrigerant Charge [R404A/R134A] Never allow the oil in the vacuum pump to flow backward. The vacuum level and vacuum pump may be the same as those for the current refrigerants. However, the rubber hose and gauge manifold to be used for evacuation and refrigerant charge should be exclusively for R404A/R134A.
  • Page 139 9) Disconnect the charging hose from the access valve. Always cap the access valve to prevent a refrigerant leak. 10) Always thoroughly leak test all joints and valve caps. 11) Avoid charging large quantities of liquid into the low side in case of damage to the compressor.

  • Page 140: Brazing

    2. BRAZING DANGER 1. Refrigerant R404A/R134A itself is not flammable, explosive and poisonous. However, when exposed to an open flame, R404A/R134A creates phosgene gas, hazardous in large amounts. 2. Always recover the refrigerant and store it in a proper container, if required by an applicable law.

  • Page 141: Drier

    10) Place the compressor in position, and secure it using the bolts and washers. 11) Remove plugs from the discharge, suction and access pipes. 12) Braze the access, suction and discharge pipes (Do not change this order) with nitrogen gas flowing at the pressure of 0.2 - 0.3 bar. 13) Install the new drier (See "4.

  • Page 142: Expansion Valve

    5. EXPANSION VALVE IMPORTANT Sometimes moisture in the refrigerant circuit exceeds the drier capacity and freezes up at the expansion valve. 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.

  • Page 143: Water Regulating Valve - Water-Cooled Model Only

    6. WATER REGULATING VALVE - WATER-COOLED MODEL ONLY IMPORTANT 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. 1) Unplug the icemaker. 2) Close the water supply tap.

  • Page 144: Evaporator Assembly

    7. EVAPORATOR ASSEMBLY See the exploded view under “III. 3. ICEMAKING MECHANISM”. 1) Push the stop button to drain the water in the evaporator. 2) Disconnect the power source. 3) Remove the panels. 4) Remove the three thumbscrews, and take off the spout from the evaporator. 5) Remove the bin control switch.
  • Page 145 IMPORTANT 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. 13) Remove the bulb of the expansion valve. 14) Disconnect the brazing connections of the expansion valve and the copper tube - low side from the evaporator, using brazing equipment.
  • Page 146 WARNING Be careful not to scratch the surface of the O-ring, or it may cause water leaks. Handle the mechanical seal with care not to scratch nor to contaminate its contact surface. 25) When replacing the evaporator; (a) Braze the new evaporator with nitrogen gas flowing at the pressure of 0.2 - 0.3 bar. (b) Replace the drier.

  • Page 147: Control Water Valve

    8. CONTROL WATER VALVE 1) Disconnect the power source. 2) Close the water supply tap. 3) Remove the panels. 4) Disconnect the terminals from the control water valve. 5) Remove the cover - reservoir Inlet from the control water valve. 6) Loosen the fitting nut on the control water valve Inlets, and remove the control water valve.

  • Page 148: Controller Board

    10) Pour water into the reservoir, and check for water leaks on the flush water valve. 11) Open the water supply tap. 12) Connect the power source. 13) Check for water leaks. 14) Push the stop button, and make sure water is flushing. 15) Push the ice button.

This manual is also suitable for:

Fm-480,600ake(-n)Fm-750,1000ake(-n)Fm-480,600awke(-n)Fm-1200,1800alke(-n)

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