Hoshizaki FM-300AKE-HC Service Manual
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Hoshizaki FM-300AKE-HC Service Manual

Modular ice maker
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See also: Instruction Manual , Installation Manual
MODULAR ICE MAKER
MODEL
HOSHIZAKI
FM-300AKE-HC
FM-300AKE-HCN
FM-480AKE-HC
FM-480AKE-HCN
SERVICE MANUAL
NO.
F087-880
ISSUED:
JUL. 9, 2012
REVISED: APR. 25, 2014

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Summary of Contents for Hoshizaki FM-300AKE-HC

  • Page 1 F087-880 ISSUED: JUL. 9, 2012 REVISED: APR. 25, 2014 HOSHIZAKI MODULAR ICE MAKER FM-300AKE-HC MODEL FM-300AKE-HCN FM-480AKE-HC FM-480AKE-HCN SERVICE MANUAL...

  • Page 2: Table Of Contents

    I. SPECIFICATIONS -------------------------------------------------------------------------------------- 1 1. DIMENSIONS/SPECIFICATIONS ----------------------------------------------------------------- 1 [a] FM-300AKE-HC (Auxiliary code: D-0 or earlier)-------------------------------------------- 1 [b] FM-300AKE-HC (Auxiliary code: D-1 or later) ---------------------------------------------- 2 [c] FM-300AKE-HCN (Auxiliary code: D-0 or earlier)------------------------------------------ 3 [d] FM-300AKE-HCN (Auxiliary code: D-1 or later) -------------------------------------------- 4...
  • Page 3 [g] REDUCING COMPRESSOR STARTING TIME-------------------------------------------36 6. PROTECTORS ----------------------------------------------------------------------------------------36 [a] INDICATION ---------------------------------------------------------------------------------------36 7. ERROR CODES ---------------------------------------------------------------------------------------37 8. PERFORMANCE DATA -----------------------------------------------------------------------------31 [a] FM-300AKE-HC -----------------------------------------------------------------------------------39 [b] FM-300AKE-HCN ---------------------------------------------------------------------------------40 [c] FM-480AKE-HC -----------------------------------------------------------------------------------41 [d] FM-480AKE-HCN ---------------------------------------------------------------------------------42 IV. SERVICE DIAGNOSIS -----------------------------------------------------------------------------43 1. NO ICE PRODUCTION ------------------------------------------------------------------------------43 2.

  • Page 4: Specifications

    I. SPECIFICATIONS 1. DIMENSIONS/SPECIFICATIONS [a] FM-300AKE-HC (Auxiliary code: D-0 or earlier)

  • Page 5: [B] Fm-300Ake-Hc (Auxiliary Code: D-1 Or Later)

    [b] FM-300AKE-HC (Auxiliary code: D-1 or later)

  • Page 6: [C] Fm-300Ake-Hcn (Auxiliary Code: D-0 Or Earlier)

    [c] FM-300AKE-HCN (Auxiliary code: D-0 or earlier)

  • Page 7: [D] Fm-300Ake-Hcn (Auxiliary Code: D-1 Or Later)

    [d] FM-300AKE-HCN (Auxiliary code: D-1 or later)

  • Page 8: [E] Fm-480Ake-Hc (Auxiliary Code: D-0 Or Earlier)

    [e] FM-480AKE-HC (Auxiliary code: D-0 or earlier)

  • Page 9: [F] Fm-480Ake-Hc (Auxiliary Code: D-1 Or Later)

    [f] FM-480AKE-HC (Auxiliary code: D-1 or later)

  • Page 10: [G] Fm-480Ake-Hcn (Auxiliary Code: D-0 Or Earlier)

    [g] FM-480AKE-HCN (Auxiliary code: D-0 or earlier)

  • Page 11: [H] Fm-480Ake-Hcn (Auxiliary Code: D-1 Or Later)

    [h] FM-480AKE-HCN (Auxiliary code: D-1 or later)

  • Page 12: Construction

    2. CONSTRUCTION [a] FM-300AKE-HC(N) (Auxiliary code: D-0 or earlier) Reservoir Spout Evaporator Gear Motor Control Water Valve Bin Control Switch Control Box Air-Cooled Condenser Flush Water Valve Fan Motor Compressor...

  • Page 13: [B] Fm-480Ake-Hc(N) (Auxiliary Code: D-0 Or Earlier)

    [b] FM-480AKE-HC(N) (Auxiliary code: D-0 or earlier) Spout Reservoir Evaporator Gear Motor Control Water Valve Bin Control Switch Air-Cooled Condenser Control Box Flush Water Valve Fan Motor Compressor...

  • Page 14: [C] Fm-300, 480Ake-Hc(N) (Auxiliary Code: D-1 Or Earlier)

    [c] FM-300AKE-HC(N), FM-480AKE-HC(N) (Auxiliary code: D-1 or later) See [a] or [b] for the entire construction. Spout Cover Reed Switch Spring (Bin Control) Spout Reed Switch (Spout Sw) Chute Actuator...

  • Page 15: 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 16: 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 17: 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 18: 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 19 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 20: Technical Information

    III. TECHNICAL INFORMATION 1. WATER CIRCUIT AND REFRIGERANT CIRCUIT * FM-480AKE-HC(N) only 400 mm Pressure Switch Cut-out 2.26 + 0.15/0 MPa Cut-in 1.57 ± 0.15 MPa...

  • Page 21: Wiring Diagram

    2. WIRING DIAGRAM [a] WIRING DIAGRAM FM-300AKE-HC(N) (Auxiliary code: D-0 or earlier)
  • Page 22 FM-300AKE-HC(N) (Auxiliary code: D-1 or later)
  • Page 23 FM-480AKE-HC(N) (Auxiliary code: D-0 or earlier)
  • Page 24 FM-480AKE-HC(N) (Auxiliary code: D-1 or later)

  • Page 25: [B] Control Box Layout

    [b] CONTROL BOX LAYOUT FM-300AKE-HC(N), FM-480AKE-HC(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) OPERATION SWITCH CIRCUIT PROTECTOR (10A: 300AKE-HC / 20A: 480AKE-HC) CAPACITOR (GM1) FUSE 3.15A...

  • Page 26: Icemaking Mechanism

    3. ICEMAKING MECHANISM Flake Type Nugget Type Screw Screw Bolt Bolt Spring Spring Washer Washer Cutter Cutter Extruding Extruding Auger Head Head Sealing Bolt Flange Belt Heater (provided for some models) Mechanical Seal O-ring Housing Evaporator Coupling Screw Gear Motor...

  • Page 27: [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 28: [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 29: [K] Bin Control Switch (Auxiliary Code: D-0 Or Earlier)

    [k] BIN CONTROL SWITCH (Auxiliary code: D-0 or earlier) 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 30 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 31: [M] Chute Switch (Auxiliary Code: D-0 Or Earlier)

    [m] CHUTE SWITCH (Auxiliary code: D-0 or earlier) 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). To restart the icemaker, remove ice from the spout and chute, and move the operation switch to the “STOP”...

  • Page 32: Electric Circuit

    4. ELECTRIC CIRCUIT CAUTION Reassemble all the components as they were after servicing the unit according to a service call. [a] BASIC OPERATION The icemaker starts water supply when the operation switch is moved to the “ON” position. On completion of water supply, the gear motor starts immediately. After 5 minutes the compressor starts to begin icemaking operation.

  • Page 33: [B] Timing Chart

    [b] TIMING CHART...

  • Page 34: 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 35: [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 36 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 37: [D] Displaying Error Log

    The display shows the software version in six digits/symbols divided into three parts. e.g. Ver. 9-3-6 = “09”, “-3”, “-6” The indication is repeated until the maintenance A button is released. [d] DISPLAYING ERROR LOG Press and hold the maintenance A button, and press the stop button. The display shows the following items one by one every time the stop button is pressed.

  • Page 38: [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 39: [G] Reducing Compressor Starting Time

    [g] REDUCING COMPRESSOR STARTING TIME With the power switch turned off, press and hold the maintenance A button. Move the operation switch to the “ON” position. Release the button when the display shows the ice mode. The compressor starts in 30 seconds after the water supply cycle ends 6.

  • Page 40: 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 41 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 42: Performance Data

    8. PERFORMANCE DATA [a] FM-300AKE-HC 0.45 0.35 0.25 0.15 1700 1500 1300 1100 10 20 30 40 The horizontal axis shows the ambient temperature. It refers to the data of at/wt=10/10, 21/15, 32/21.

  • Page 43: [B] Fm-300Ake-Hcn

    [b] FM-300AKE-HCN 0.45 0.35 0.25 0.15 0.05 1700 1500 1300 1100 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.

  • Page 44: [C] Fm-480Ake-Hc

    [c] FM-480AKE-HC 0.55 0.45 0.35 0.25 1700 1500 1300 1100 The horizontal axis shows the ambient temperature. It refers to the data of at/wt=10/10, 21/15, 32/21.

  • Page 45: [D] Fm-480Ake-Hcn

    [d] FM-480AKE-HCN 0.55 0.45 0.35 0.25 1700 1500 1300 1100 The horizontal axis shows the ambient temperature. It refers to the data of at/wt=10/10, 21/15, 32/21.

  • Page 46: 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 47 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 48: 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 49 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 50: Removal And Replacement Of Components

    If any component of the refrigeration circuit requires removal or replacement, please contact the manufacturer: HOSHIZAKI EUROPE LIMITED Telford 70 Stafford Park 7, Telford, Shropshire TF3 3BQ UK Tel: +44 (0)1952-291777...
  • Page 51 BELT HEATER 8) Detach the spring, and remove the belt heater. EXTRUDING HEAD 9) Remove the sealing bolts, and lift off the extruding head. 10) Check the bearing inside the extruding head. If it is worn out or scratched, replace the bearing.

  • Page 52: Control Water Valve

    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. 18) Refit the panels in their correct position. 19) Connect the power source.

  • Page 53: Controller Board

    5) Disconnect the terminals from the flush water valve. 6) Remove the flush water valve from the bracket. 7) Remove the drain pipe from the flush water valve. 8) Connect the drain pipe to the new flush water valve, and place the valve in position. 9) Connect the hose to the flush water valve, and secure it with the clamp.
  • Page 54 4) Disconnect the connectors and board support from the controller board. 5) Remove the controller board from the control box. 6) Install the new controller board and reassemble the control box in the reverse order of the removal procedure. 7) Replace the front panel in its correct position. 8) Connect the power source.

This manual is also suitable for:

Fm-300ake-hcnFm-480ake-hcFm-480ake-hcn

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