Hoshizaki FM-150KE(-N) Service Manual
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Hoshizaki FM-150KE(-N) Service Manual

Self-contained ice maker
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See also: Instruction Manual , Installation Manual
SELF-CONTAINED ICE MAKER
MODEL
HOSHIZAKI
FM-150KE(-N)
CM-140KE
FM-150KE-50(-N)
FM-120KE
CM-110KE-50
FM-80KE(-N)
SERVICE MANUAL
NO.
F080-869
ISSUED: APR. 25, 2012
REVISED:

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  • Page 1 NO. F080-869 ISSUED: APR. 25, 2012 REVISED: HOSHIZAKI SELF-CONTAINED ICE MAKER FM-150KE(-N) MODEL CM-140KE FM-150KE-50(-N) FM-120KE CM-110KE-50 FM-80KE(-N) SERVICE MANUAL...

  • Page 2: Table Of Contents

    CONTENTS PAGE I. SPECIFICATIONS -------------------------------------------------------------------------------------- 1 1. DIMENSIONS/SPECIFICATIONS ----------------------------------------------------------------- 1 [a] FM-150KE ------------------------------------------------------------------------------------------- 1 [b] FM-150KE-N ---------------------------------------------------------------------------------------- 2 [c] CM-140KE ------------------------------------------------------------------------------------------- 3 [d] FM-150KE-50 --------------------------------------------------------------------------------------- 4 [e] FM-150KE-50-N ------------------------------------------------------------------------------------ 5 [f] FM-120KE -------------------------------------------------------------------------------------------- 6 [g] CM-110KE-50 --------------------------------------------------------------------------------------- 7 [h] FM-80KE --------------------------------------------------------------------------------------------- 8 [i] FM-80KE-N ------------------------------------------------------------------------------------------- 9 2.
  • Page 3 [b] SETTING MODEL NUMBER-------------------------------------------------------------------28 [c] DISPLAYING COMPRESSOR OPERATING HOURS, CYCLE TIME, MODEL NUMBER AND SOFTWARE VERSION -----------------------------------------------------29 [d] DISPLAYING ERROR LOG --------------------------------------------------------------------31 [e] RESETTING ERROR LOG ---------------------------------------------------------------------32 [f] RESETTING COMPRESSOR OPERATING HOURS ------------------------------------32 [g] REDUCING COMPRESSOR STARTING TIME-------------------------------------------32 6. PROTECTORS ----------------------------------------------------------------------------------------33 [a] INDICATION ---------------------------------------------------------------------------------------33 7.

  • Page 4: Specifications

    I. SPECIFICATIONS 1. DIMENSIONS/SPECIFICATIONS [a] FM-150KE...

  • Page 5: [B] Fm-150Ke-N

    [b] FM-150KE-N...

  • Page 6: [C] Cm-140Ke

    [c] CM-140KE...

  • Page 7: [D] Fm-150Ke-50

    [d] FM-150KE-50...

  • Page 8: [E] Fm-150Ke-50-N

    [e] FM-150KE-50-N...

  • Page 9: [F] Fm-120Ke

    [f] FM-120KE...

  • Page 10: [G] Cm-110Ke-50

    [g] CM-110KE-50...

  • Page 11: [H] Fm-80Ke

    [h] FM-80KE...

  • Page 12: [I] Fm-80Ke-N

    [i] FM-80KE-N...

  • Page 13: Construction

    2. CONSTRUCTION [a] FM-150KE(-N), CM-140KE, FM-150KE-50(-N), FM-120KE, CM-110KE-50 Bin Control Switch Reservoir Control Water Valve Control Box Evaporator Compressor Gear Motor Flush Water Valve Fan Motor Air-Cooled Condenser...

  • Page 14: [B] Fm-80Ke

    [b] FM-80KE(-N) Bin Control Switch Reservoir Control Water Valve Control Box Evaporator Compressor Gear Motor Fan Motor Air-Cooled Condenser Flush Water Valve...

  • 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

    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. 3. GEAR MOTOR After the following hours of operation, check the gear motor for excessive noise caused by increased torque or deterioration of mechanical parts.

  • 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 19) Immerse these parts in the sanitizing solution for about 15 minutes. 20) Rinse these parts thoroughly with clean water. IMPORTANT If the solution is left on these parts, they will corrode. 21) Refit the removed parts in reverse order. 22) Close the water supply tap.

  • Page 21: Technical Information

    III. TECHNICAL INFORMATION 1. WATER CIRCUIT AND REFRIGERANT CIRCUIT [a] FM-150KE(-N), CM-140KE, FM-150KE-50(-N), FM-120KE, CM-110KE-50 CONTROL WATER VALVE RESERVOIR WATER VALVE EXPANSION VALVE WATER EVAPORATOR SUPPLY FLUSH GEAR MOTOR WATER VALVE DRAIN PAN CAPILLARY DRIER TUBE FAN MOTOR DRAIN COMPRESSOR CONDENSER AIR-COOLED...

  • Page 22: [B] Fm-80Ke

    [b] FM-80KE(-N) CONTROL WATER VALVE RESERVOIR WATER VALVE WATER EVAPORATOR SUPPLY GEAR MOTOR FLUSH WATER VALVE DRAIN PAN CAPILLARY DRIER TUBE FAN MOTOR DRAIN COMPRESSOR CONDENSER AIR-COOLED...

  • Page 23: Wiring Diagram

    2. WIRING DIAGRAM [a] WIRING DIAGRAM FM-150KE(-N), CM-140KE, FM-150KE-50(-N), FM-120KE, CM-110KE-50...
  • Page 24 FM-80KE(-N)

  • Page 25: [B] Control Box Layout

    [b] CONTROL BOX LAYOUT X5 F 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 DETECTOR) OPERATION SWITCH CIRCUIT PROTECTOR (10A) SURGE ABSORBER (LIGHTENING ARRESTER)

  • Page 26: Icemaking Mechanism

    3. ICEMAKING MECHANISM CM-110KE CM-140KE Sealing Bolt FM-80KE Cutter FM-120KE FM-150KE(-50) FM-80KE-N Extruding FM-150KE(-50)-N Flange Head Cutter Cutter Extruding Head Extruding Evaporator Head Screw Hex Head Bolt w/Washer Auger O-Ring Housing Ring Coupling - Spline Mechanical Seal 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: 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 30: [B] Timing Chart

    [b] TIMING CHART...

  • Page 31: 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 32: [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 33 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 34: [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 35: [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 36: 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 37: 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 38 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 39: Performance Data

    8. PERFORMANCE DATA [a] FM-150KE, FM-150KE-50 0.16 0.14 0.12 0.10 1300 1100 The horizontal axis shows the ambient temperature. It refers to the data of at/wt=10/10,21/15,32/21,40/35.

  • Page 40: [B] Fm-150Ke-N, Fm-150Ke-50

    [b] FM-150KE-N, FM-150KE-50-N 0.16 0.14 0.12 0.10 0.08 1300 1100 The horizontal axis shows the ambient temperature. It refers to the data of at/wt=10/10,21/15,32/21,40/35.

  • Page 41: [C] Cm-140Ke

    [c] CM-140KE 0.16 0.14 0.12 0.10 0.08 1300 1100 The horizontal axis shows the ambient temperature. It refers to the data of at/wt=10/10,21/15,32/21,40/35.

  • Page 42: [D] Fm-120Ke

    [d] FM-120KE 0.16 0.14 0.12 0.10 0.08 1300 1100 The horizontal axis shows the ambient temperature. It refers to the data of at/wt=10/10,21/15,32/21,40/35.

  • Page 43: [E] Cm-110Ke-50

    [e] CM-110KE-50 0.14 0.12 0.10 0.08 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 44: F] Fm-80Ke

    [f] FM-80KE 0.09 0.08 0.07 0.06 0.05 1.85 1.75 1.65 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 45: [G] Fm-80Ke

    [g] FM-80KE-N 0.08 0.07 0.06 0.05 0.04 0.03 1.75 1.65 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 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

    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 51: [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 52 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 53: 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 54: 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 55: 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 56: 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 57: 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 58 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 59 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 60: 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 61: 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:

Cm-140keFm-120keFm-150ke-50-nCm-110ke-50Fm-80ke-nFm-150ke ... Show all

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