Page 1 MODULAR ICE MAKER FM-170AKE FM-170AKE-N FM-300AKE FM-300AKE-N FM-480AKE FM-480AKE-N SERVICE MANUAL FM-480AWKE FM-480AWKE-N FM-600AKE FM-600AKE-N FM-600AWKE FM-600AWKE-N FM-750AKE FM-750AKE-N FM-1000AKE FM-1000AKE-N FM-1200ALKE FM-1200ALKE-N FM-1800ALKE FM-1800ALKE-N FM-480AWKE-R452-SB FM-480AWKE-R452N-SB FM-600AKE-R452-SB FM-600AKE-R452N-SB FM-600AWKE-R452-SB FM-600AWKE-R452N-SB FM-750AKE-R452-SB FM-750AKE-R452N-SB FM-1000AKE-R452-SB FM-1000AKE-R452N-SB FM-1200AKE-R452-SB FM-1200AKE-R452N-SB FM-1800AKE-R452-SB FM-1800AKE-R452N-SB F054-812 (011520)
Page 2: Table Of Contents
FM-1200AKE-R452-SB -------------------------------------------------------------------------------- 49 FM-1200AKE-R452N-SB ------------------------------------------------------------------------------ 50 FM-1800ALKE-R452-SB ------------------------------------------------------------------------------ 51 FM-1800ALKE-N-R452N-SB ------------------------------------------------------------------------- 52 2. CONSTRUCTION ---------------------------------------------------------------------------------------- 53 [a] FM-170AKE(-N) -------------------------------------------------------------------------------------- 53 [b] FM-300AKE(-N), FM-480AKE(-N), FM-600AKE(-N), FM-600AKE-R452(N)-SB ---- 54 [c] FM-480AWKE(-N), FM-600AWKE(-N), FM-480AWKE-R452(N)-SB, FM-600AWKE-R452(N)-SB ----------------------------------------------------------------------- 55 [d] FM-750AKE(-N), FM-1000AKE(-N), FM-750AKE-R452(N)-SB, FM-1000AKE-R452(N)-SB ------------------------------------------------------------------------ 56...
Page 3 7. CONTROL WATER VALVE ---------------------------------------------------------------------------- 63 8. CLEANING OF WATER SYSTEM ------------------------------------------------------------------- 64 III. TECHNICAL INFORMATION ------------------------------------------------------------------------- 66 1. WATER CIRCUIT AND REFRIGERANT CIRCUIT ---------------------------------------------- 66 [a] FM-170AKE(-N), FM-300AKE(-N), FM-480AKE(-N), FM-600AKE(-N), FM-600AKE-R452(N)-SB -------------------------------------------------------------------------- 66 [b] FM-750AKE(-N), FM-1000AKE(-N), FM-750AKE-R452(N)-SB, FM-1000AKE- R452(N)-SB ------------------------------------------------------------------------------------------- 67...
Page 4 [f] RESETTING COMPRESSOR OPERATING HOURS -------------------------------------122 [g] REDUCING COMPRESSOR STARTING TIME --------------------------------------------123 6. PROTECTORS ------------------------------------------------------------------------------------------123 [a] INDICATION -----------------------------------------------------------------------------------------123 7. ERROR CODES -----------------------------------------------------------------------------------------124 8. PERFORMANCE DATA -------------------------------------------------------------------------------126 [a] FM-170AKE ------------------------------------------------------------------------------------------126 [b] FM-170AKE-N ---------------------------------------------------------------------------------------127 [c] FM-300AKE ------------------------------------------------------------------------------------------128 [d] FM-300AKE-N ---------------------------------------------------------------------------------------129 [e] FM-480AKE ------------------------------------------------------------------------------------------130 [f] FM-480AKE-N ---------------------------------------------------------------------------------------131...
Page 5: Specifications
I. SPECIFICATIONS 1. DIMENSIONS/SPECIFICATIONS FM-170AKE...
Page 6: Fm-170Ake-N
FM-170AKE-N...
Page 7: Fm-300Ake
FM-300AKE (Auxiliary code: D-0 or earlier)
Page 8 FM-300AKE (Auxiliary code: D-1 or later)
Page 9: Fm-300Ake-N
FM-300AKE-N (Auxiliary code: D-0 or earlier)
Page 10 FM-300AKE-N (Auxiliary code: D-1 or later)
Page 11: Fm-480Ake
FM-480AKE (Auxiliary code: D-0 or earlier)
Page 12 FM-480AKE (Auxiliary code: D-1 or later)
Page 13: Fm-480Ake-N
FM-480AKE-N (Auxiliary code: D-0 or earlier)
Page 14 FM-480AKE-N (Auxiliary code: D-1 or later)
Page 15: Fm-480Awke
FM-480AWKE (Auxiliary code: D-0 or earlier)
Page 16 FM-480AWKE (Auxiliary code: D-1 or later)
Page 17: Fm-480Awke-N
FM-480AWKE-N (Auxiliary code: D-0 or earlier)
Page 18 FM-480AWKE-N (Auxiliary code: D-1 or later)
Page 19: Fm-600Ake
FM-600AKE (Auxiliary code: D-0 or earlier)
Page 20 FM-600AKE (Auxiliary code: D-1 or later)
Page 21: Fm-600Ake-N
FM-600AKE-N (Auxiliary code: D-0 or earlier)
Page 22 FM-600AKE-N (Auxiliary code: D-1 or later)
Page 23: Fm-600Awke
FM-600AWKE (Auxiliary code: D-0 or earlier)
Page 24 FM-600AWKE (Auxiliary code: D-1 or later)
Page 25: Fm-600Awke-N
FM-600AWKE-N (Auxiliary code: D-0 or earlier)
Page 26 FM-600AWKE-N (Auxiliary code: D-1 or later)
Page 27: Fm-750Ake
FM-750AKE (Auxiliary code: D-0 or earlier)
Page 28 FM-750AKE (Auxiliary code: D-1 or later)
Page 29: Fm-750Ake-N
FM-750AKE-N (Auxiliary code: D-0 or earlier)
Page 30 FM-750AKE-N (Auxiliary code: D-1 or later)
Page 31: Fm-1000Ake
FM-1000AKE (Auxiliary code: D-0 or earlier)
Page 32 FM-1000AKE (Auxiliary code: D-1 or later)
Page 33: Fm-1000Ake-N
FM-1000AKE-N (Auxiliary code: D-0 or earlier)
Page 34 FM-1000AKE-N (Auxiliary code: D-1 or later)
Page 35: Fm-1200Alke
FM-1200ALKE (Auxiliary code: D-0 or earlier)
Page 36 FM-1200ALKE (Auxiliary code: D-1 or later)
Page 37: Fm-1200Alke-N
FM-1200ALKE-N (Auxiliary code: D-0 or earlier)
Page 38 FM-1200ALKE-N (Auxiliary code: D-1 or later)
Page 39: Fm-1800Alke
FM-1800ALKE (Auxiliary code: D-0 or earlier)
Page 40 FM-1800ALKE (Auxiliary code: D-1 or later)
Page 41: Fm-1800Alke-N
FM-1800ALKE-N (Auxiliary code: D-0 or earlier)
Page 42 FM-1800ALKE-N (Auxiliary code: D-1 or later)
Page 43: Fm-480Awke-R452-Sb
FM-480AWKE-R452-SB...
Page 44: Fm-480Awke-R452N-Sb
FM-480AWKE-R452N-SB...
Page 45: Fm-600Ake-R452-Sb
FM-600AKE-R452-SB...
Page 46: Fm-600Ake-R452N-Sb
FM-600AKE-R452N-SB...
Page 47: Fm-600Awke-R452-Sb
FM-600AWKE-R452-SB...
Page 48: Fm-600Awke-R452N-Sb
FM-600AWKE-R452N-SB...
Page 49: Fm-750Ake-R452-Sb
FM-750AKE-R452-SB...
Page 50: Fm-750Ake-R452N-Sb
FM-750AKE-R452N-SB...
Page 51: Fm-1000Ake-R452-Sb
FM-1000AKE-R452-SB...
Page 52: Fm-1000Ake-R452N-Sb
FM-1000AKE-R452N-SB...
Page 53: Fm-1200Ake-R452-Sb
FM-1200ALKE-R452-SB...
Page 54: Fm-1200Ake-R452N-Sb
FM-1200ALKE-R452N-SB...
Page 55: Fm-1800Alke-R452-Sb
FM-1800ALKE-R452-SB...
Page 56: Fm-1800Alke-N-R452N-Sb
FM-1800ALKE-R452N-SB...
Page 57: Construction
2. CONSTRUCTION [a] FM-170AKE(-N) Bin Control Switch Control Water Valve Reservoir Control Box Evaporator Air-Cooled Condenser Flush Water Valve Gear Motor Fan Motor Compressor...
Page 58: [B] Fm-300Ake(-N), Fm-480Ake(-N), Fm-600Ake(-N), Fm-600Ake-R452(N)-Sb
[b] FM-300AKE(-N), FM-480AKE(-N), FM-600AKE(-N), FM-600AKE-R452(N)-SB 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 from D-1. See “[g] BIN CONTROL SWITCH AND SPOUT”...
Page 59: [C] Fm-480Awke(-N), Fm-600Awke(-N), Fm-480Awke-R452(N)-Sb
[c] FM-480AWKE(-N), FM-600AWKE(-N), FM-480AWKE-R452(N)-SB, FM-600AWKE- R452(N)-SB 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 from D-1. See “[g] BIN CONTROL SWITCH AND SPOUT”...
Page 60: [D] Fm-750Ake(-N), Fm-1000Ake(-N), Fm-750Ake-R452(N)-Sb, Fm-1000Ake-R452(N)-Sb
[d] FM-750AKE(-N), FM-1000AKE(-N), FM-750AKE-R452(N)-SB, FM-1000AKE-R452(N)- Control Water Valve Spout * Air-Cooled Condenser Bin Control Switch Fan Motor 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 61: [E] Fm-1200Alke(-N), Fm-1200Alke-R452(N)-Sb
[e] FM-1200ALKE(-N), FM-1200ALKE-R452(N)-SB 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 62: [F] Fm-1800Alke(-N), Fm-1800Alke-R452(N)-Sb
[f] FM-1800ALKE(-N), FM-1800ALKE-R452(N)-SB Control Water Valve Spout * Control Box Reservoir Evaporator Expansion Valve Solenoid Valve Bin Control Switch * * The bin control switch and spout shown Evaporator 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 63: [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), FM-480AWKE-R452(N)-SB, FM- 600AKE-R452(N)-SB, FM-600AWKE-R452(N)-SB,FM-750AKE-R452(N)-SB, FM- 1000AKE-R452(N)-SB, FM-1200ALKE-R452(N)-SB,FM-1800ALKE-R452(N)-SB] Spout Cover Reed Switch (Bin Control) Spring Actuator Spout Reed Switch (Spout Switch) Chute...
Page 64: Maintenance And Cleaning Instructions
This information is provided on the label attached to the front panel and in the instruction manual. But instruct the user to contact a Hoshizaki service agent for replacement as soon as the display starts flashing “PC”.
Page 65: Extruding Head (Upper Bearing), Housing (Lower Bearing)
After replacing the extruding head and mechanical seal: 1) Reset the compressor operating hours in accordance with “III. 5. [f] RESETTING COMPRESSOR OPERATING HOURS”. The “PC” indication on the display goes off. 2) Record the date of replacement on the label attached to the front panel. Operating Hours “PC”...
Page 66: 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. 4. 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 67: Control Water Valve
7. 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 68: Cleaning Of Water System
8. 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 69 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 70: 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-600AKE- R452(N)-SB PRESSURE SWITCH CONTROL WATER VALVE FAN MOTOR COMPRESSOR FLOAT SWITCH CONDENSER ACCESS VALVE HEAT EXCHANGER * FM-480AKE(-N), FM-600AKE(-N) only 350 mm 800 mm WATER INLET...
Page 71: [B] Fm-750Ake(-N), Fm-1000Ake(-N), Fm-750Ake-R452(N)-Sb, Fm-1000Ake- R452(N)-Sb
[b] FM-750AKE(-N), FM-1000AKE(-N), FM-750AKE-R452(N)-SB, FM-1000AKE-R452(N)- PRESSURE SWITCH CONTROL WATER VALVE FAN MOTOR COMPRESSOR FLOAT SWITCH CONDENSER ACCESS VALVE HEAT EXCHANGER 350 mm EVAPORATOR WATER INLET RESERVOIR DRIER EVAPORATOR EXP.V EXP.V WATER OUTLET FLUSH WATER VALVE Pressure Switch Cut-out 3.14 + 0.15/0 MPa Cut-in 2.26 ±...
Page 72: [C] Fm-1200Alke(-N), Fm-1200Alke-R452(N)-Sb
[c] FM-1200ALKE(-N), FM-1200ALKE-R452(N)-SB E.P REGULATOR CONTROL WATER VALVE FLOAT SWITCH SOLENOID VALVE EVAPORATOR WATER INLET RESERVOIR EXP.V EVAPORATOR EXP.V WATER OUTLET FLUSH WATER VALVE...
Page 73: [D] Fm-1800Alke(-N), Fm-1800Alke-R452(N)-Sb
[d] FM-1800ALKE(-N), FM-1800ALKE-R452(N)-SB E.P REGULATOR CONTROL WATER VALVE FLOAT SWITCH E.P REGULATOR EVAPORATOR WATER INLET SOLENOID VALVE RESERVOIR EVAPORATOR EXP.V FLUSH WATER VALVE FLOAT SWITCH CONTROL WATER VALVE EXP.V EVAPORATOR WATER OUTLET WATER INLET RESERVOIR EXP.V WATER OUTLET...
Page 74: [E] Fm-480Awke(-N), Fm-600Awke(-N), Fm-480Awke-R452(N)-Sb, Fm-600Awke
[e] FM-480AWKE(-N), FM-600AWKE(-N), FM-480AWKE-R452(N)-SB, FM-600AWKE- R452(N)-SB CONTROL WATER VALVE PRESSURE SWITCH FAN MOTOR COMPRESSOR FLOAT SWITCH WATER-COOLED CONDENSER ACCESS VALVE HEAT EXCHANGER * FM-480AWKE(-N): 400 mm FM-600AWKE(-N): 800 mm WATER INLET DRIER RESERVOIR EVAPORATOR EXP.V WATER OUTLET FLUSH WATER VALVE Pressure Switch [FM-480AWKE(-N), FM-480AWKE-R452(N)-SB] Cut-out 3.14 + 0.15/0 MPa...
Page 75: Wiring Diagram
2. WIRING DIAGRAM [a] WIRING DIAGRAM FM-170AKE(-N) (Auxiliary code: C-0 or earlier) SET No. GR/Y PROTECTION -LINE 10A SURGE ABSORBER (VARISTOR) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 [{XA}] START CAP. 60MFD (BK)
Page 76 FM-170AKE(-N) (Auxiliary code: C-1 or later) SET No. GR/Y PROTECTION -LINE 10A SURGE ABSORBER (VARISTOR) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 [{XA}] START CAP. 60MFD (BK) (BK) SURGE ABSORBER COMP. (LIGHTNING ARRESTER)
Page 77 FM-300AKE(-N) (Auxiliary code: D-0 or earlier) SET No. GR/Y PROTECTION -LINE 10A 1 2 3 4 5 6 7 8 9 10 11 12 13 14 [{XA}] CAPACITOR (BU) (BR) COMPRESSOR STARTING RELAY 1 2 3 4 5 6 7 8 9 10 11 12 13 14 [{XA}] [{XA}] BIN CONTROL SWITCH1...
Page 78 FM-300AKE(-N) (Auxiliary code: D-1 or later) SET No. GR/Y PROTECTION -LINE 10A [{XA}] CAPACITOR (BU) (BR) COMPRESSOR STARTING RELAY [{XA}] [{XA}] BIN CONTROL SWITCH1 (BK) GEAR MOTOR 1 PROTECTION SWITCH1 CAP. 6 µ F (BK) THERMAL PROTECTOR PRESSURE SWITCH [{XA}] FLOAT SWITCH FAN MOTOR 1 (BU)
Page 79 FM-480AKE(-N) (Auxiliary code: D-0 or earlier) SET No. GR/Y PROTECTION -LINE 20A 1 2 3 4 5 6 7 8 9 10 11 12 13 14 [{XA}] RUN CAP. COMPRESSOR 1 2 3 4 5 6 7 8 9 10 11 12 13 14 [{XA}] THERMAL PROTECTOR...
Page 80 FM-480AKE(-N) (Auxiliary code: D-1 or later) SET No. GR/Y PROTECTION -LINE 20A [{XA}] RUN CAP. COMPRESSOR [{XA}] THERMAL PROTECTOR [{XA}] START CAP. STARTER BIN CONTROL SWITCH1 (BK) GEAR MOTOR 1 PROTECTION SWITCH1 CAP. 6 µ F P T1 (BK) THERMAL PROTECTOR PRESSURE SWITCH...
Page 81 FM-480AWKE(-N) (Auxiliary code: D-0 or earlier) SET No. GR/Y PROTECTION -LINE 20A 1 2 3 4 5 6 7 8 9 10 11 12 13 14 [{XA}] RUN CAP. COMPRESSOR 1 2 3 4 5 6 7 8 9 10 11 12 13 14 [{XA}] THERMAL PROTECTOR...
Page 82 FM-480AWKE(-N) (Auxiliary code: D-1 or later), FM-480AWKE-R452(N)-SB SET No. GR/Y PROTECTION -LINE 20A [{XA}] RUN CAP. COMPRESSOR THERMAL [{XA}] PROTECTOR [{XA}] START CAP. STARTER BIN CONTROL SWITCH1 (BK) GEAR MOTOR 1 PROTECTION SWITCH1 CAP. 6 µ F P T1 (BK) THERMAL PROTECTOR PRESSURE...
Page 83 FM-600AKE(-N) (Auxiliary code: D-0 or earlier) SET No. GR/Y PROTECTION -LINE 25A CRANKCASE HEATER 1 2 3 4 5 6 7 8 9 10 11 12 13 14 [{XA}] NOISE SUPPRESSION CAPACITOR RUN CAP. COMPRESSOR START CAP. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 [{XA}] THERMAL PROTECTOR...
Page 84 FM-600AKE(-N) (Auxiliary code: D-1 or later), FM-600AKE-R452(N)-SB SET No. GR/Y PROTECTION -LINE 25A CRANKCASE HEATER [{XA}] NOISE SUPPRESSION CAPACITOR RUN CAP. COMPRESSOR START CAP. THERMAL [{XA}] PROTECTOR STARTER [{XA}] BIN CONTROL SWITCH1 (BK) GEAR MOTOR 1 PROTECTION SWITCH1 CAP. 6 µ F P T1 (BK) THERMAL...
Page 85 FM-600AWKE(-N) (Auxiliary code: D-0 or earlier) SET No. GR/Y PROTECTION -LINE 25A CRANKCASE HEATER 1 2 3 4 5 6 7 8 9 10 11 12 13 14 [{XA}] NOISE SUPPRESSION CAPACITOR RUN CAP. COMPRESSOR START CAP. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 [{XA}] THERMAL PROTECTOR...
Page 86 FM-600AWKE(-N) (Auxiliary code: D-1 or later), FM-600AWKE-R452(N)-SB SET No. GR/Y PROTECTION -LINE 25A CRANKCASE HEATER [{XA}] NOISE SUPPRESSION CAPACITOR RUN CAP. COMPRESSOR START CAP. [{XA}] THERMAL PROTECTOR STARTER [{XA}] BIN CONTROL SWITCH1 (BK) GEAR MOTOR 1 PROTECTION SWITCH1 CAP. 6µF (BK) THERMAL PROTECTOR...
Page 87 FM-750AKE(-N) [Auxiliary code: A-2 or earlier] GR/Y PROTECTION -LINE 20A 1 2 3 4 5 6 7 8 9 10 11 12 13 14 [{XA}] RUN CAP. COMPRESSOR START CAP. THERMAL PROTECTOR STARTER 1 2 3 4 5 6 7 8 9 10 11 12 13 14 BIN CONTROL SWITCH1 [{XA}] (BK)
Page 88 FM-750AKE(-N) [Auxiliary code: A-3 and B-0] SET No. GR/Y PROTECTION -LINE 20A 1 2 3 4 5 6 7 8 9 10 11 12 13 14 [{XA}] COMPRESSOR RUN CAP. START CAP. THERMAL PROTECTOR STARTER 1 2 3 4 5 6 7 8 9 10 11 12 13 14 [{XA}] [{XA}] BIN CONTROL SWITCH2...
Page 89 FM-750AKE(-N) [Auxiliary code: B-1 to D-0] SET No. GR/Y PROTECTION -LINE 20A 1 2 3 4 5 6 7 8 9 10 11 12 13 14 [{XA}] RUN CAP. COMPRESSOR THERMAL PROTECTOR 1 2 3 4 5 6 7 8 9 10 11 12 13 14 [{XA}] START CAP.
Page 90 FM-750AKE(-N) [Auxiliary code: D-1 or later], FM-750AKE-R452(N)-SB SET No. GR/Y PROTECTION -LINE 20A [{XA}] RUN CAP. COMPRESSOR THERMAL PROTECTOR [{XA}] START CAP. STARTER [{XA}] BIN CONTROL SWITCH1 BIN CONTROL SWITCH2 (BK) GEAR MOTOR 1 CAP. 6µF THERMAL PROTECTION SWITCH1 PROTECTION SWITCH2 PROTECTOR (BK) GEAR MOTOR 2...
Page 91 FM-1000AKE(-N) [Auxiliary code: A-2 or earlier] GR/Y PROTECTION -LINE 25A 1 2 3 4 5 6 7 8 9 10 11 12 13 14 [{XA}] CRANKCASE HEATER V/BK COMPRESSOR RUN CAP. BIN CONTROL SWITCH1 START CAP. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 [{XA}] THERMAL PROTECTOR...
Page 92 FM-1000AKE(-N) [Auxiliary code: A-3 and B-0] SET No. GR/Y PROTECTION -LINE 25A 1 2 3 4 5 6 7 8 9 10 11 12 13 14 [{XA}] CRANKCASE HEATER V/BK RUN CAP. COMPRESSOR START CAP. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 [{XA}] THERMAL PROTECTOR...
Page 93 FM-1000AKE(-N) [Auxiliary code: B-1 to D-0] SET No. GR/Y PROTECTION -LINE 25A CRANKCASE HEATER 1 2 3 4 5 6 7 8 9 10 11 12 13 14 [{XA}] NOISE SUPPRESSION CAPACITOR COMPRESSOR RUN CAP. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 START CAP.
Page 94 FM-1000AKE(-N) [Auxiliary code: D-1 or later], FM-1000AKE-R452(N)-SB SET No. GR/Y PROTECTION -LINE 25A CRANKCASE HEATER 1 2 3 4 5 6 7 8 9 10 11 12 13 14 [{XA}] NOISE SUPPRESSION CAPACITOR COMPRESSOR RUN CAP. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 START CAP.
Page 95 FM-1200ALKE(-N) [Auxiliary code: A-3 or earlier] GR/Y PROTECTION -LINE 10A 1 2 3 4 5 6 7 8 9 10 11 12 13 14 [{XA}] SOLENOID VALVE 1 2 3 4 5 6 7 8 9 10 11 12 13 14 BIN CONTROL SWITCH1 (BR) (BU)
Page 96 FM-1200ALKE(-N) [Auxiliary code: A-4 and B-0] SET No. GR/Y PROTECTION -LINE 10A 1 2 3 4 5 6 7 8 9 10 11 12 13 14 [{XA}] SOLENOID VALVE 1 2 3 4 5 6 7 8 9 10 11 12 13 14 (BR) (BU) [{XA}]...
Page 97 FM-1200ALKE(-N) [Auxiliary code: B-1 to D-0] SET No. GR/Y PROTECTION -LINE 10A 1 2 3 4 5 6 7 8 9 10 11 12 13 14 [{XA}] SOLENOID VALVE (BR) (BU) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 [{XA}] [{XA}] BIN CONTROL SWITCH1...
Page 98 FM-1200ALKE(-N) [Auxiliary code: D-1 or later], FM-1200ALKE-R452(N)-SB SET No. GR/Y PROTECTION -LINE 10A [{XA}] SOLENOID VALVE (BR) (BU) [{XA}] [{XA}] BIN CONTROL SWITCH1 BIN CONTROL SWITCH2 GEAR MOTOR 1 (BK) CAP. 6µF P T1 THERMAL PROTECTION SWITCH1 PROTECTION SWITCH2 PROTECTOR (BK) GEAR MOTOR 2 CAP.
Page 99 FM-1800ALKE(-N) [Auxiliary code: A-3 or earlier] GR/Y PROTECTION -LINE 10A 1 2 3 4 5 6 7 8 9 10 11 12 13 14 [{XA}] BIN CONTROL SWITCH1 (DBU) SOLENOID VALVE (BK) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 BIN CONTROL SWITCH2 (BR) (BU)
Page 100 FM-1800ALKE(-N) [Auxiliary code: A-4 and B-0] SET No. GR/Y PROTECTION -LINE 10A 1 2 3 4 5 6 7 8 9 10 11 12 13 14 [{XA}] SOLENOID VALVE 1 2 3 4 5 6 7 8 9 10 11 12 13 14 (BR) (BU) [{XA}]...
Page 101 FM-1800ALKE(-N) [Auxiliary code: B-1 and D-0] SET No. GR/Y PROTECTION -LINE 10A 1 2 3 4 5 6 7 8 9 10 11 12 13 14 [{XA}] SOLENOID VALVE 1 2 3 4 5 6 7 8 9 10 11 12 13 14 (BR) (BU) [{XA}]...
Page 102 FM-1800ALKE(-N) [Auxiliary code: D-1 or later], FM-1800ALKE-R452(N)-SB SET No. GR/Y PROTECTION -LINE 10A [{XA}] SOLENOID VALVE (BR) (BU) [{XA}] [{XA}] BIN CONTROL SWITCH1 BIN CONTROL SWITCH2 (BK) (BK) GEAR MOTOR 1 CAP. 6µF BIN CONTROL SWITCH3 PROTECTION SWITCH1 PROTECTION SWITCH2 THERMAL PROTECTOR (BK)
Page 103: [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...
Page 104 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 105 FM-480AWKE(-N), FM-480AWKE-R452(N)-SB 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 106 FM-600AKE(-N), FM-600AWKE(-N), FM-600AKE-R452(N)-SB, FM-600AWKE-R452(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)
Page 107 FM-750AKE(-N), FM-1000AKE(-N) [Auxiliary code: B0 or earlier] CONTROLLER BOARD-MAIN POWER RELAY (GEAR MOTOR, ON BOARD) POWER RELAY (COMPRESSOR, ON BOARD) CONTROLLER BOARD-OPERATION CAPACITOR (GM1) CAPACITOR (GM2) STARTER START CAPACITOR RUN CAPACITOR FUSE CIRCUIT PROTECTOR POWER RELAY POWER RELAY (FM-1000AKE FM-1000AKE-N ONLY) OPERATION SWITCH...
Page 108 FM-1200ALKE(-N) [Auxiliary code: B0 or earlier] CONTROLLER BOARD-MAIN POWER RELAY (GEAR MOTOR, ON BOARD) POWER RELAY (SOLENOID VALVE, ON BOARD) CONTROLLER BOARD-OPERATION CAPACITOR (GM1) CAPACITOR (GM2) POWER RELAY CIRCUIT PROTECTOR FUSE OPERATION SWITCH...
Page 109 FM-1800ALKE(-N) [Auxiliary code: B0 or earlier] CONTROLLER BOARD-MAIN POWER RELAY (GEAR MOTOR, ON BOARD) POWER RELAY (SOLENOID VALVE, ON BOARD) CONTROLLER BOARD-OPERATION CAPACITOR (GM1) CAPACITOR (GM2) CAPACITOR (GM3) POWER RELAY POWER RELAY POWER RELAY CIRCUIT PROTECTOR FUSE OPERATION SWITCH...
Page 110 FM-750AKE(-N), FM-1200ALKE(-N) [Auxiliary code: B1 or later], FM-750AKE-R452(N)- SB, FM-1200ALKE-R452(N)-SB 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 111 FM-1000AKE(-N) [Auxiliary code: B1 or later], FM-1000AKE-R452(N)-SB 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)
Page 112 FM-1800ALKE(-N) [Auxiliary code: B1 or later], FM-1800ALKE-R452(N)-SB 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...
Page 113: Icemaking Mechanism
3. ICEMAKING MECHANISM Flake Type Nugget Type Screw Bolt Spring Washer Cutter Auger Extruding Packing - Spout Head Flange Mechanical Seal Pan Head O-Ring Machine Screw Belt Heater (provided for some models) Hex. Head Bolt W/ Sealing Bolt Washer Cover - Gear Motor Housing Coupling...
Page 114: [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 115: [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 116: [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 117: [L] Bin Control Switch
[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 BIN CONTROL the chute fills up, ice will push up the actuator on top of the chute to switch off the proximity switch.
Page 118: [N] Chute Switch
5. The icemaking operation stops. Heavy soil inside the spout or chute may cause ice to get stuck. Dirty actuator hinge may disturb the movement of actuator. Check the cleanness of spout, chute, and actuator at periodic inspection or periodic part replacement. Wipe clean any notably dirty part. The ice detector is different for flake icemaker and nugget icemaker.
Page 119: [O] Spout, Spout Cover
Band Microswitch Chute Spout Abnormal Condition (Band moves and presses microswitch) Band Microswitch Chute Spout [o] SPOUT, SPOUT COVER [FM-300/480/600AKE(-N), FM-480/600AWKE(-N) (Auxiliary code: D-1 or later), FM-750/1000AKE(-N) (Auxiliary code: A-2 or earlier, D-1 or later), FM-1200/1800ALKE(N) (Auxiliary code: A-3 or earlier, D-1 or later), FM-600AKE- R452(N)-SB, FM-480AWKE-R452(N)-SB,FM-600AWKE-R452(N)-SB, FM-750AKE- R452(N)-SB, FM-1000AKE-R452(N)-SB, FM-1200ALKE-R452(N)-SB, FM-1800ALKE-R452(N)-SB]...
Page 120: 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 121: [B] Timing Chart
[b] TIMING CHART...
Page 122: 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 123: [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 124 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.
Page 125: [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 126: [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 Note: This operation should be performed only when the display shows “PC”.
Page 127: [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 128: Error Codes
7. ERROR CODES Interlock Errors Code Error Condition Operation Reset Check/Repair Water leak from water circuit (reservoir, inlet hose, outlet Icemaking Water c0 error occurs 2 times in Whole Power supply, Turn hose, hose joint, mechanical Leak a row. unit stops. OFF - Turn ON seal, flush water valve), float switch...
Page 129 Non-Interlock Errors Code Error Condition Operation Reset Check/Repair Error records Microcomputer and compressor Microcomputer fails to Memory circuit not Replace controller Time Read/Write operating hours read/write properly. available. board. “- -” Error not available on display Water leak from After initial water supply, Whole unit stops.
Page 130: 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 131: [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 132: [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 133: [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 134: [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 135: [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 136: [G] Fm-480Awke, Fm-480Awke-R452
[g] FM-480AWKE, FM-480AWKE-R452-SB 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 137: [H] Fm-480Awke-N, Fm-480Awke-R452N
[h] FM-480AWKE-N, FM-480AWKE-R452N-SB 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 138: [I] Fm-600Ake, Fm-600Ake-R452
[i] FM-600AKE, FM-600AKE-R452-SB 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 139: [J] Fm-600Ake-N, Fm-600Ake-R452N
[j] FM-600AKE-N, FM-600AKE-R452N-SB 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 140: [K] Fm-600Awke, Fm-600Awke-R452
[k] FM-600AWKE, FM-600AWKE-R452-SB 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 141: [L] Fm-600Awke-N, Fm-600Awke-R452N
[l] FM-600AWKE-N, FM-600AWKE-R452N-SB 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 142: [M] Fm-750Ake, Fm-750Ake-R452
[m] FM-750AKE, FM-750AKE-R452-SB 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 143: [N] Fm-750Ake-N, Fm-750Ake-R452N
[n] FM-750AKE-N, FM-750AKE-R452N-SB 2400 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 144: [O] Fm-1000Ake, Fm-1000Ake-R452
[o] FM-1000AKE, FM-1000AKE-R452-SB 1200 1150 1100 1050 1000 12.5 11.5 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 145: [P] Fm-1000Ake-N, Fm-1000Ake-R452N
[p] FM-1000AKE-N, FM-1000AKE-R452N-SB 1000 10 20 30 40 50 10 20 30 40 50 12.5 11.5 10 20 30 40 50 2200 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 146: [Q] Fm-1200Alke, Fm-1200Alke-R452
[q] FM-1200ALKE, FM-1200ALKE-R452-SB 1400 1300 1200 1100 1000 [r] FM-1200ALKE-N, FM-1200ALKE-R452N-SB 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 147: [S] Fm-1800Alke, Fm-1800Alke-R452
[s] FM-1800ALKE, FM-1800ALKE-R452-SB 2000 1900 1800 1700 1600 1500 1400 1300 1200 1100 1000 [t] FM-1800ALKE-N, FM-1800ALKE-R452N-SB 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 148: 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 will a) Power supply 1.
Page 149 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 pressure.
Page 150: 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 pressure 1.
Page 151 PROBLEM POSSIBLE CAUSE REMEDY [1] (Continued) f) Heater 1. Defective. 1. Replace. g) CPR (condenser 1. Internal leaks. 1. Replace. unit) [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.
Page 152: Removal And Replacement
V. REMOVAL AND REPLACEMENT 1. SERVICE FOR REFRIGERANT LINES [a] SERVICE INFORMATION 1) Allowable Compressor Opening Time and Prevention of Lubricant Mixture [R452A/ 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 153: [B] Refrigerant Recovery
7) Evacuation, Vacuum Pump and Refrigerant Charge [R452A/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 R452A/R404A/R134A.
Page 154 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 155: Brazing
2. BRAZING DANGER 1. Refrigerant R452A/R404A/R134A itself is not flammable, explosive and poisonous. However, when exposed to an open flame, R452A/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 156: 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 157: 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 158: 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 159: 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 160 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 161 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 162: 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 163: 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.

Hoshizaki FM-170AKE Service Manual

Quick Links

Need help?

Questions and answers

Related Manuals for Hoshizaki FM-170AKE

Summary of Contents for Hoshizaki FM-170AKE

This manual is also suitable for:

Table of Contents