Hoshizaki FM-481AGE-HC Service Manual
  1. Manuals
  2. Brands
  3. Hoshizaki Manuals
  4. Ice Maker
  5. FM-481AGE-HC
  6. Service manual

Hoshizaki FM-481AGE-HC Service Manual

Modular ice maker
Hide thumbs Also See for FM-481AGE-HC:
Table of Contents

Advertisement

Quick Links

See also: Instruction Manual
MODULAR ICE MAKER
MODEL
HOSHIZAKI
FM-481AGE-HC
FM-481AGE-HCN
FM-300AFE-HC
FM-300AFE-HCN
SERVICE MANUAL
NO.
F048-796
ISSUED:
MAR. 1, 2010
REVISED: MAY 14, 2010

Advertisement

Table of Contents
loading
Need help?

Need help?

Do you have a question about the FM-481AGE-HC and is the answer not in the manual?

Questions and answers

Subscribe to Our Youtube Channel

Related Manuals for Hoshizaki FM-481AGE-HC

Summary of Contents for Hoshizaki FM-481AGE-HC

  • Page 1 F048-796 ISSUED: MAR. 1, 2010 REVISED: MAY 14, 2010 HOSHIZAKI MODULAR ICE MAKER FM-481AGE-HC MODEL FM-481AGE-HCN FM-300AFE-HC FM-300AFE-HCN SERVICE MANUAL...
  • Page 2 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 3: Table Of Contents

    [e] ERROR CODES AND RECORDS------------------------------------------------------------- 1 [f] OTHER INFORMATION -------------------------------------------------------------------------- 2 [g] CHANGE OF ICE TYPE-------------------------------------------------------------------------- 2 2. DIMENSIONS/CONNECTIONS -------------------------------------------------------------------- 3 [a] FM-481AGE-HC, FM-481AGE-HCN ---------------------------------------------------------- 3 [b] FM-300AFE-HC, FM-300AFE-HCN ----------------------------------------------------------- 4 3. SPECIFICATIONS ------------------------------------------------------------------------------------- 5 [a] FM-481AGE-HC ------------------------------------------------------------------------------------ 5 [b] FM-481AGE-HCN---------------------------------------------------------------------------------- 6...
  • Page 4 [b] SERVICE OPERATION -------------------------------------------------------------------------48 8. PROTECTORS ----------------------------------------------------------------------------------------52 [a] INDICATION ---------------------------------------------------------------------------------------52 [b] PROTECTORS ------------------------------------------------------------------------------------52 9. ERROR CODES ---------------------------------------------------------------------------------------55 10. PERFORMANCE DATA ---------------------------------------------------------------------------57 [a] FM-481AGE-HC -----------------------------------------------------------------------------------57 [b] FM-481AGE-HCN---------------------------------------------------------------------------------58 [c] FM-300AFE-HC -----------------------------------------------------------------------------------59 [d] FM-300AFE-HCN ---------------------------------------------------------------------------------60 IV. SERVICE DIAGNOSIS -----------------------------------------------------------------------------61 1. NO ICE PRODUCTION ------------------------------------------------------------------------------61 2.

  • Page 5: Specifications

    I. SPECIFICATIONS 1. FEATURES [a] LOW VOLTAGE When the supply voltage is too low or surrounding high-current equipment starts up, the voltage in the icemaker may drop temporarily. In this case, the Compressor will fail to start, or the Gear Motor will lock during the icemaking operation. The locked Gear Motor may apply the maximum torque to the icemaking mechanism and damage its parts.

  • Page 6: [F] Other Information

    [f] OTHER INFORMATION Other information is also available from the Controller Board. See “III. 7. OPERATION BOARD” for details. [g] CHANGE OF ICE TYPE With the older models, changes between flake ice and nugget ice were available by replacing the Extruding Head and Cutter. With the new models, not only the Extruding Head and Cutter but also the refrigeration circuit is different between the flake ice model and nugget ice model.

  • Page 7: Dimensions/Connections

    2. DIMENSIONS/CONNECTIONS [a] FM-481AGE-HC, FM-481AGE-HCN...

  • Page 8: [B] Fm-300Afe-Hc, Fm-300Afe-Hcn

    [b] FM-300AFE-HC, FM-300AFE-HCN...

  • Page 9: Specifications

    3. SPECIFICATIONS [a] FM-481AGE-HC...

  • Page 10: [B] Fm-481Age-Hcn

    [b] FM-481AGE-HCN...

  • Page 11: [C] Fm-300Afe-Hc

    [c] FM-300AFE-HC...

  • Page 12: [D] Fm-300Afe-Hcn

    [d] FM-300AFE-HCN...

  • Page 13: Construction

    4. CONSTRUCTION Modular flaker models FM-481AGE-HC, FM-481AGE-HCN, FM-300AFE-HC and FM-300AFE-HCN include Water Supply, Evaporator, Compressor, Condenser and Control Assemblies. As the unit is not equipped with an Ice Storage Bin, this must be purchased separately as optional extra. [a] FM-481AGE-HC, FM-481AGE-HCN...
  • Page 14 Ice Chute Pressure Switch Drier...

  • Page 15: [B] Fm-300Afe-Hc, Fm-300Afe-Hcn

    [b] FM-300AFE-HC, FM-300AFE-HCN Control Box Compressor Ice Chute Evaporator Reservoir Gear Motor Pressure Switch Drier Flush Water Valve...

  • Page 16: 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 have the optimum performance of this icemaker, the following consumable parts need periodical inspection, maintenance and replacement: Extruding Head (Top Bearing) Housing (Lower Bearing) Mechanical Seal...

  • Page 17: Gear Motor

    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. Bearing, Gear and other mechanical parts: 10,000 hours Oil seal: 5 years Note: When the output shaft oil seal is exposed to a large amount of water at one time, water may enter the Gear Case.

  • Page 18: Water Valve

    6. WATER VALVE 1) Disconnect the power source. 2) Close the water supply tap. 3) Disconnect the Inlet Hose from the Water Valve. 4) Remove the Mesh Filter from the Water Valve. 5) Clean the Mesh using a brush. 6) Replace the Mesh and Inlet Hose in their correct positions. 7) Open the water supply tap.

  • Page 19: 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 20 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 21: Periodical Cleaning

    5) Rinse thoroughly with fresh water and a clean cloth to wipe off the solution. Close the Bin Door. Note: Some solutions may cause damage to the Bin liner surfaces or corrosion on the metal parts. Always rinse the sanitiser unless directed otherwise by Hoshizaki guidelines.

  • Page 22: Technical Information

    III. TECHNICAL INFORMATION 1. WATER CIRCUIT AND REFRIGERANT CIRCUIT [a] FM-481AGE-HC, FM-481AGE-HCN Pressure Switch Cut-out 22.6 ± 1.5/0 bar Cut-in 15.7 ± 1.5 bar...

  • Page 23: [B] Fm-300Afe-Hc, Fm-300Afe-Hcn

    [b] FM-300AFE-HC, FM-300AFE-HCN Pressure Switch Cut-out 22.6 ± 1.5/0 bar Cut-in 15.7 ± 1.5 bar...

  • Page 24: Wiring Diagram

    2. WIRING DIAGRAM [a] WIRING DIAGRAM FM-481AGE-HC, FM-481AGE-HCN...
  • Page 25 FM-300AFE-HC, FM-300AFE-HCN...

  • Page 26: [B] Control Box Layout

    [b] CONTROL BOX LAYOUT FM-481AGE-HC, FM-481AGE-HCN...
  • Page 27 FM-300AFE-HC, FM-300AFE-HCN...

  • Page 28: Icemaking Mechanism

    3. ICEMAKING MECHANISM FM-481AGE-HCN FM-300AFE-HCN ONLY [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 29: [C] Extruding Head (Bearing)

    [c] EXTRUDING HEAD (BEARING) The stainless steel Extruding Head is provided with a press-fit plastic Bearing inside and fixed on top of the Evaporator. The Extruding Head functions as the Auger Bearing and compresses the sherbet ice carried up by the Auger into a column shape with the path resistance.

  • Page 30: Water Circuit

    cap screw. The screw is provided with retaining and sealing functions, which may be reduced by the load and vibration during a freeze cycle. Do not reuse a removed socket head cap screw. 4. WATER CIRCUIT [a] RESERVOIR (WATER TANK) The Reservoir made of plastic maintains the water level necessary for ice production.

  • Page 31: [D] Flush Water Valve

    [d] FLUSH WATER VALVE When the Flush Timer operates or the Stop Button is pressed to shut down the icemaker, the Flush Water Valve will be energized to open and flush out the Evaporator Casing and Reservoir (21.7V DC). [e] DRAINING ICEMAKER IN SUBFREEZING CONDITIONS In winter, the water circuit must be completely drained out or otherwise protected to prevent freeze-up and damage before shutting down...

  • Page 32: Refrigeration Circuit

    5. REFRIGERATION CIRCUIT WARNING This machine contains flammable refrigerant. Do not attempt to break into the refrigerant circuit unless qualified, competent and authorised to do so. [a] APPLICABLE PARTS Refrigerant (R290) Compressor Evaporator Casing Air-cooled Condenser Air-cooled Condenser Fan Motor Drier Thermal Expansion Valve (with MOP) [b] SERVICE INSTRUCTIONS...

  • Page 33: [E] Evaporator Casing

    [e] EVAPORATOR CASING The Evaporator Casing is a thin and rigid stainless steel pipe tightly coiled around with a copper tube and solder finished. The refrigerant flows through a very narrow path in the Expansion Valve with a sudden drop of pressure and evaporates by absorbing heat of vaporization from the Evaporator Casing.

  • Page 34: Electric Circuit

    10 minutes, the icemaker supplies water until the Reservoir fills up and starts a drain cycle. After 10 minutes the icemaker automatically starts water supply and resumes icemaking operation. [b] TIMING CHART FM-481AGE-HC, FM-481AGE-HCN...
  • Page 35 FM-300AFE-HC, FM-300AFE-HCN...

  • Page 37: [C] Sequence

    [c] SEQUENCE FM-481AGE-HC, FM-481AGE-HCN (1) Startup - Water Supply...
  • Page 38 FM-481AGE-HC, FM-481AGE-HCN (2) Startup - After completion of water supply, Gear Motor and Fan Motor start (5 min).
  • Page 39 FM-481AGE-HC, FM-481AGE-HCN (3) Startup - Ice production starts...
  • Page 40 FM-481AGE-HC, FM-481AGE-HCN (4) Normal Operation - Bin Control...
  • Page 41 FM-481AGE-HC, FM-481AGE-HCN (5) Shutdown - Compressor stops (5 min)
  • Page 42 FM-481AGE-HC, FM-481AGE-HCN (6) Shutdown - Drain...
  • Page 43 FM-300AFE-HC, FM-300AFE-HCN (1) Startup - Water Supply...
  • Page 44 FM-300AFE-HC, FM-300AFE-HCN (2) Startup - After completion of water supply, Gear Motor and Fan Motor start (5 min).
  • Page 45 FM-300AFE-HC, FM-300AFE-HCN (3) Startup - Ice production starts...
  • Page 46 FM-300AFE-HC, FM-300AFE-HCN (4) Normal Operation - Bin Control...
  • Page 47 FM-300AFE-HC, FM-300AFE-HCN (5) Shutdown - Compressor stops (5 min)
  • Page 48 FM-300AFE-HC, FM-300AFE-HCN (6) Shutdown - Drain...

  • Page 49: [D] Operation Board

    [d] OPERATION BOARD The Operation Board is provided for operation of the icemaker. See “7. OPERATION BOARD” for details. [e] CONTROLLER BOARD The icemaker is controlled by the Controller Board based on the following logic: 1) Low Voltage Standby In a low voltage condition, the Compressor and Gear Motor may fail to start or rotate properly due to insufficient torque.

  • Page 50: [F] Surge Absorber

    [f] SURGE ABSORBER The Surge Absorber is provided to protect the Controller Board from lightning. [g] CAPACITOR - XY FILTER The Capacitor - XY Filter is provided to prevent the Controller Board from signal errors caused by internal and external noises.

  • Page 51: [I] Chute Switch

    [i] CHUTE SWITCH 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 52: Operation Board

    7. OPERATION BOARD [a] USER OPERATION (accessible from the Window Panel) ICE = When pressed in the STOP mode, the unit will be supplied with water and start icemaking operation. STOP = When pressed in the ICE mode, the unit will stop icemaking operation and drain. RESET = When pressed during shutdown with an error code displayed, the unit may restart icemaking operation.
  • Page 53 Press the Set Button again to complete the setting and start icemaking operation in the ICE mode. 2) Displaying Model Setting No. Keep pressing the Option Button in the ICE or STOP mode. The Display Window will show the compressor operating hours ([b] - 3). Press and release the Ice Button.
  • Page 54 6) Displaying Ongoing Error Keep pressing the Option Button in the ICE or STOP mode. The Display Window will show the compressor operating hours ([b] - 3). Press and release the Stop Button to display the error record ([b] - 5). The most recent errors will be displayed in reverse order of occurrence.
  • Page 55 GM locking detected by current + GM hunting detected by current + (Low GM rotation speed + High GM current + Voltage above low voltage sensor reset level) GM locking detected by current GM hunting detected by current Low GM rotation speed + High GM current + Voltage above low voltage sensor reset level Abnormal low voltage Freeze up...

  • Page 56: Protectors

    10) Reducing Compressor Startup Time With the Operation Switch in the OFF position, keep pressing the Option Button, and turn ON the Operation Switch. Release the Option Button when the Display Window shows the ICE mode. The Compressor will start up about 30 seconds after completion of water supply. 8.
  • Page 57 gas when the rotation slows down. Shuts down the icemaker when the rotation slows down further. Thermal Protector Provided on the motor coil. Operates when the motor temperature rises. The protector is auto-reset, but the controller shuts down the icemaker. Press the Reset Button to restart. The above protectors indicate “E3”, “Ed”...
  • Page 58 9) Float Switch The Float Switch or connector may have a bad contact if the Float Switch trips at the upper float level but not at the lower float level with the Flush Water Valve closed. “E2” will appear in the Display Window. 10) High Pressure Switch Operates at a high condensing pressure when the icemaker has a clogged Air Filter or a dirty Condenser.

  • Page 59: Error Codes

    9. ERROR CODES Interlock Errors Code Error Condition Operation Reset Check/Repair Following initial water supply, Float Switch trips Water leak, Flush Icemaking Water Whole unit Press Reset at lower float level after Water Valve not Leak stops. Button. Gear Motor starts and closing, Float Switch before Compressor starts.
  • Page 60 Code Error Condition Operation Reset Check/Repair Frequent c3 error occurs 3 times in Whole unit Press Reset Supply voltage Voltage Error 24 hours. stops. Button. Gear Motor Ed and EE occur 10 times Replace Evaporator Failure EJ blinks. in total. and Gear Motor.

  • Page 61: Performance Data

    10. PERFORMANCE DATA [a] FM-481AGE-HC Head Pressure1(bar) Head Pressure2(bar) Suction Pressure1(bar) Suction Pressure2(bar) 10/10 21/15 32/21 Ambient Temp/Water Temp(℃) Ice Production Capacity(kg/day) 10/10 21/15 32/21 Ambient Temp/Water Temp(℃) 0.45 0.35 Water 0.25 Consumption 0.15 0.05 10/10 21/15 32/21 Ambient Temp/Water Temp(℃)

  • Page 62: [B] Fm-481Age-Hcn

    [b] FM-481AGE-HCN Head Pressure1(bar) Head Pressure2(bar) Suction Pressure1(bar) Suction Pressure2(bar) 10/10 21/15 32/21 Ambient Temp/Water Temp(℃) Ice Production Capacity(kg/day) 10/10 21/15 32/21 Ambient Temp/Water Temp(℃) 0.35 0.25 Water Consumption 0.15 0.05 10/10 21/15 32/21 Ambient Temp/Water Temp(℃)

  • Page 63: [C] Fm-300Afe-Hc

    [c] FM-300AFE-HC Head Pressure(bar) Suction Pressure(bar) 10/10 21/15 32/21 Ambient Temp/Water Temp(℃) Ice Production Capacity(kg/day) 10/10 21/15 32/21 Ambient Temp/Water Temp(℃) 0.35 0.30 0.25 0.20 0.15 0.10 Water Consumption(m^3/day) 0.05 0.00 10/10 21/15 32/21 Ambient Temp/Water Temp(℃)

  • Page 64: [D] Fm-300Afe-Hcn

    [d] FM-300AFE-HCN Head Pressure(bar) Suction Pressure(bar) 10/10 21/15 32/21 Ambient Temp/Water Temp(℃) Ice Production Capacity(kg/day) 10/10 21/15 32/21 Ambient Temp/Water Temp(℃) 0.35 0.30 0.25 0.20 0.15 0.10 Water Consumption(m^3/day) 0.05 0.00 10/10 21/15 32/21 Ambient Temp/Water Temp(℃)

  • Page 65: Service Diagnosis

    IV. SERVICE DIAGNOSIS Display error record by operating the Operation Board (See “III. 7. [b] 5) Displaying Error Record”). Check for a possible cause and service the unit. 1. NO ICE PRODUCTION PROBLEM POSSIBLE CAUSE REMEDY [1] The icemaker will a) Power Supply 1.
  • Page 66 PROBLEM POSSIBLE CAUSE REMEDY [3] Water has been a) Bin Control 1. Bad contacts. 1. Check for continuity and supplied, but the replace. icemaker will not 2. Activator does not 2. Clean Axle and its start. move freely. corresponding holes or replace Bin Control.

  • Page 67: 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 68 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 1. Clean or replace. not close. c) Float Switch 1.

  • Page 69: 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...

This manual is also suitable for:

Fm-300afe-hcnFm-481age-hcnFm-300afe-hc

Table of Contents