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Summary of Contents for Hoshizaki FM-170,300AKE(-N)
- Page 1 NO. F054-812 ISSUED: AUG. 3, 2010 REVISED: JUN. 11, 2012 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...
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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 -------------------------------------------------------------------------------------- 4 [e] FM-480AKE ----------------------------------------------------------------------------------------- 5 [f] FM-480AKE-N --------------------------------------------------------------------------------------- 6 [g] FM-480AWKE--------------------------------------------------------------------------------------- 7 [h] FM-480AWKE-N ----------------------------------------------------------------------------------- 8 [i] FM-600AKE ------------------------------------------------------------------------------------------ 9 [j] FM-600AKE-N --------------------------------------------------------------------------------------10 [k] FM-600AWKE --------------------------------------------------------------------------------------11... - Page 3 [a] WIRING DIAGRAM -------------------------------------------------------------------------------37 [b] CONTROL BOX LAYOUT ----------------------------------------------------------------------55 3. ICEMAKING MECHANISM -------------------------------------------------------------------------65 [a] EVAPORATOR (CASING)----------------------------------------------------------------------66 [b] AUGER ----------------------------------------------------------------------------------------------66 [c] EXTRUDING HEAD (BEARING) --------------------------------------------------------------66 [d] HOUSING-------------------------------------------------------------------------------------------66 [e] MECHANICAL SEAL-----------------------------------------------------------------------------66 [f] COUPLING (SPLINE JOINT) -------------------------------------------------------------------66 [g] GEAR MOTOR ------------------------------------------------------------------------------------66 [h] BELT HEATER ------------------------------------------------------------------------------------67 [i] REMOVABLE FLANGE --------------------------------------------------------------------------67 [j] SEALING BOLT ------------------------------------------------------------------------------------67 [k] CHUTE, BIN CONTROL SWITCH ------------------------------------------------------------67...
- Page 4 [o] FM-1000AKE ---------------------------------------------------------------------------------------95 [p] FM-1000AKE-N------------------------------------------------------------------------------------96 [q] FM-1200ALKE -------------------------------------------------------------------------------------97 [r] FM-1200ALKE-N-----------------------------------------------------------------------------------97 [s] FM-1800ALKE -------------------------------------------------------------------------------------98 [t] FM-1800ALKE-N -----------------------------------------------------------------------------------98 IV. SERVICE DIAGNOSIS -----------------------------------------------------------------------------99 1. NO ICE PRODUCTION ------------------------------------------------------------------------------99 2. LOW ICE PRODUCTION-------------------------------------------------------------------------- 101 3. OTHERS----------------------------------------------------------------------------------------------- 101 V. REMOVAL AND REPLACEMENT OF COMPONENTS----------------------------------- 103 1.
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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... -
Page 8: [D] Fm-300Ake-N
[d] FM-300AKE-N... -
Page 9: [E] Fm-480Ake
[e] FM-480AKE... -
Page 10: [F] Fm-480Ake-N
[f] FM-480AKE-N... -
Page 11: [G] Fm-480Awke
[g] FM-480AWKE... -
Page 12: [H] Fm-480Awke-N
[h] FM-480AWKE-N... -
Page 13: [I] Fm-600Ake
[i] FM-600AKE... -
Page 14: [J] Fm-600Ake
[j] FM-600AKE-N... -
Page 15: [K] Fm-600Awke
[k] FM-600AWKE... -
Page 16: [L] Fm-600Awke
[l] FM-600AWKE-N... -
Page 17: [M] Fm-750Ake
[m] FM-750AKE... -
Page 18: [N] Fm-750Ake
[n] FM-750AKE-N... -
Page 19: [O] Fm-1000Ake
[o] FM-1000AKE... -
Page 20: [P] Fm-1000Ake
[p] FM-1000AKE-N... -
Page 21: [Q] Fm-1200Alke
[q] FM-1200ALKE... -
Page 22: [R] Fm-1200Alke
[r] FM-1200ALKE-N... -
Page 23: [S] Fm-1800Alke
[s] FM-1800ALKE... -
Page 24: [T] Fm-1800Alke
[t] FM-1800ALKE-N... -
Page 25: 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 26: [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... -
Page 27: [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... -
Page 28: [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 and earlier. -
Page 29: [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 and earlier. For the auxiliary code A-4 and later, they are the same as those for FM-170/300/480/600. -
Page 30: [F] Fm-1800Alke
[f] FM-1800ALKE(-N) Control Water Valve Spout * Control Box Reservoir Evaporator Expansion Valve Solenoid Valve Bin Control Switch * * The bin control switch and spout shown here are for the auxiliary code A-3 and earlier. For Evaporator the auxiliary code A-4 and later, they are the same as those for FM-170/300/480/600. -
Page 31: 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 32: 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 33: 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 34: 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 35 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.
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Page 36: 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 37: [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 38: [C] Fm-1200Alke
[c] FM-1200ALKE(-N) -
Page 39: [D] Fm-1800Alke
[d] FM-1800ALKE(-N) -
Page 40: [E] Fm-480Awke(-N), Fm-600Awke
[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 41: Wiring Diagram
2. WIRING DIAGRAM [a] WIRING DIAGRAM FM-170AKE(-N) - Page 42 FM-300AKE(-N)
- Page 43 FM-480AKE(-N)
- Page 44 FM-480AWKE(-N)
- Page 45 FM-600AKE(-N)
- Page 46 FM-600AWKE(-N)
- Page 47 FM-750AKE(-N) [Auxiliary code A2 and earlier]...
- Page 48 FM-750AKE(-N) [Auxiliary code A3 and B0]...
- Page 49 FM-750AKE(-N) [Auxiliary code B1 and later]...
- Page 50 FM-1000AKE(-N) [Auxiliary code A2 and earlier]...
- Page 51 FM-1000AKE(-N) [Auxiliary code A3 and B0]...
- Page 52 FM-1000AKE(-N) [Auxiliary code B1 and later]...
- Page 53 FM-1200ALKE(-N) [Auxiliary code A3 and earlier]...
- Page 54 FM-1200ALKE(-N) [Auxiliary code A4 and B0]...
- Page 55 FM-1200ALKE(-N) [Auxiliary code B1 and later]...
- Page 56 FM-1800ALKE(-N) [Auxiliary code A3 and earlier]...
- Page 57 FM-1800ALKE(-N) [Auxiliary code A4 and B0]...
- Page 58 FM-1800ALKE(-N) [Auxiliary code B1 and later]...
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Page 59: [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 60 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 61 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 62 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 63 FM-750AKE(-N), FM-1000AKE(-N) [Auxiliary code B0 and earlier]...
- Page 64 FM-1200ALKE(-N) [Auxiliary code B0 and earlier]...
- Page 65 FM-1800ALKE(-N) [Auxiliary code B0 and earlier]...
- Page 66 FM-750AKE(-N), FM-1200ALKE(-N) [Auxiliary code B1 and 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 67 FM-1000AKE(-N) [Auxiliary code B1 and 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 68 FM-1800ALKE(-N) [Auxiliary code B1 and 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)
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Page 69: 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 70: [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 71: [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 72: [L] Spout, Spout Cover
passages and infrared sensor lenses in the plastic part of the bin control switch are clean. If not, wipe them clean with a soft cloth. Soft PVC Soft PVC Chute Bin Control Switch Infrared Ray Passage Infrared Sensor Lens [l] SPOUT, SPOUT COVER [FM-750/1000 (Auxiliary code A-2 and earlier), FM-1200/1800 (Auxiliary code A-3 and earlier)] Spout Cover... -
Page 73: [M] Bin Control Switch
[m] BIN CONTROL SWITCH [FM-170/300/480/600, FM-750/1000 (Auxiliary code A-3 and later), FM-1200/1800 (Auxiliary code A-4 and later)] 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 74: [O] Crankcase Heater
Normal Condition Band Microswitch Chute Spout Abnormal Condition (Band moves and presses microswitch) Band Microswitch Chute Spout [o] 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. -
Page 75: 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 76: [B] Timing Chart
[b] TIMING CHART... -
Page 77: 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 78: [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 79 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.
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Page 80: [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 81: [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 82: 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 83: 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 84 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.
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Page 85: 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 86: [B] Fm-170Ake
[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 87: [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 88: [D] Fm-300Ake
[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 89: [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 90: [F] Fm-480Ake
[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 91: [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 92: [H] Fm-480Awke
[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 93: [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 94: [J] Fm-600Ake
[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 95: [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 96: [L] Fm-600Awke
[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 97: [M] Fm-750Ake
[m] FM-750AKE... -
Page 98: [N] Fm-750Ake
[n] FM-750AKE-N... -
Page 99: [O] Fm-1000Ake
[o] FM-1000AKE... -
Page 100: [P] Fm-1000Ake
[p] FM-1000AKE-N... -
Page 101: [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 102: [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 103: 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 104 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.
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Page 105: 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 106 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.
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Page 107: 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 108: [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 109 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.
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Page 110: 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 111: 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 112: 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 113: 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 114: 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 115 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 116 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.
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Page 117: 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 118: 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.