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Hoshizaki FM-120KE-50-HC, Service Manual

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Hoshizaki FM-120KE-50-HC Service Manual Download Page 2

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CONTENTS

PAGE

I. SPECIFICATIONS --------------------------------------------------------------------------------------- 1

1. DIMENSIONS/SPECIFICATIONS ------------------------------------------------------------------- 1

[a] FM-120KE-HC ---------------------------------------------------------------------------------------- 1

[b] FM-120KE-HCN ------------------------------------------------------------------------------------- 2

[c] FM-120KE-50-HC ----------------------------------------------------------------------------------- 3

[d] FM-120KE-50-HCN --------------------------------------------------------------------------------- 4

[e] FM-80KE-HC ----------------------------------------------------------------------------------------- 5

[f] FM-80KE-HCN --------------------------------------------------------------------------------------- 6

2. CONSTRUCTION ---------------------------------------------------------------------------------------- 7

[a]  FM-120KE-HC(N), FM-120KE-50-HC(N)------------------------------------------------------ 7

[b] FM-80KE-HC(N) ------------------------------------------------------------------------------------- 8

II.  MAINTENANCE AND CLEANING INSTRUCTIONS ------------------------------------------- 9

1.  PERIODIC PARTS REPLACEMENT --------------------------------------------------------------- 9

2.  EXTRUDING HEAD (UPPER BEARING), HOUSING (LOWER BEARING) ------------ 10

3.  MECHANICAL SEAL ---------------------------------------------------------------------------------- 10

4.  GEAR MOTOR ------------------------------------------------------------------------------------------11

5.  CONDENSER (AIR-COOLED MODEL ONLY) --------------------------------------------------11

6.  AIR FILTER (AIR-COOLED MODEL ONLY) -----------------------------------------------------11

7.  CONTROL WATER VALVE -------------------------------------------------------------------------- 12

8.  CLEANING OF WATER SYSTEM ----------------------------------------------------------------- 13

III. TECHNICAL INFORMATION ----------------------------------------------------------------------- 16

1.  WATER CIRCUIT AND REFRIGERANT CIRCUIT -------------------------------------------- 16

[a]  FM-120KE-HC(N), FM-120KE-50-HC(N)---------------------------------------------------- 16

[b] FM-80KE-HC(N) ----------------------------------------------------------------------------------- 17

2.  WIRING DIAGRAM ------------------------------------------------------------------------------------ 18

[a]  WIRING DIAGRAM ------------------------------------------------------------------------------- 18

[b]  CONTROL BOX LAYOUT ----------------------------------------------------------------------- 19

3.  ICEMAKING MECHANISM -------------------------------------------------------------------------- 20

[a]  EVAPORATOR (CASING) ----------------------------------------------------------------------- 21

[b] AUGER ----------------------------------------------------------------------------------------------- 21

[c]  EXTRUDING HEAD (BEARING) -------------------------------------------------------------- 21

[d] HOUSING ------------------------------------------------------------------------------------------- 21

[e]  MECHANICAL SEAL ----------------------------------------------------------------------------- 21

[f]  COUPLING (SPLINE JOINT) ------------------------------------------------------------------- 21

[g]  GEAR MOTOR ------------------------------------------------------------------------------------- 21

[h]  BELT HEATER ------------------------------------------------------------------------------------- 22

[i]  REMOVABLE FLANGE -------------------------------------------------------------------------- 22

[j]  SEALING BOLT ------------------------------------------------------------------------------------ 22

4.  ELECTRIC CIRCUIT ---------------------------------------------------------------------------------- 23

[a]  BASIC OPERATION ------------------------------------------------------------------------------ 23

[b]  TIMING CHART ------------------------------------------------------------------------------------ 24

5.  OPERATION BOARD --------------------------------------------------------------------------------- 25

[a]  OPERATION BUTTONS ------------------------------------------------------------------------- 25

[b]  SETTING MODEL NUMBER ------------------------------------------------------------------- 25

[c]  DISPLAYING COMPRESSOR OPERATING HOURS, CYCLE TIME, 

MODEL NUMBER AND SOFTWARE VERSION ------------------------------------------ 26

[d]  DISPLAYING ERROR LOG --------------------------------------------------------------------- 28

Summary of Contents for FM-120KE-50-HC

Page 1: ...FM 120KE HC FM 120KE HCN FM 120KE 50 HC FM 120KE 50 HCN FM 80KE HC FM 80KE HCN F114 992 053118 SELF CONTAINED ICE MAKER SERVICE MANUAL...

Page 2: ...VALVE 12 8 CLEANING OF WATER SYSTEM 13 III TECHNICAL INFORMATION 16 1 WATER CIRCUIT AND REFRIGERANT CIRCUIT 16 a FM 120KE HC N FM 120KE 50 HC N 16 b FM 80KE HC N 17 2 WIRING DIAGRAM 18 a WIRING DIAGRA...

Page 3: ...NO ICE PRODUCTION 37 2 LOW ICE PRODUCTION 39 3 OTHERS 39 V REMOVAL AND REPLACEMENT 41 1 SERVICE FOR REFRIGERANT LINES 41 a SERVICE INFORMATION 41 b REFRIGERANT RECOVERY 42 c REFRIGERANT REMOVAL 42 d E...

Page 4: ...mbient Temp 21 C Water Temp 15 C Approx 0 082m 3 Ambient Temp 32 C Water Temp 21 C Ambient Temp 5 40 C Water Supply Temp 5 35 C Water Supply Pressure 0 05 0 8MPa Voltage Range Rated Voltage 6 MODEL PO...

Page 5: ...100g Actuator and Reed Switch Time delay controlled Float Switch and Solenoid Valve 6A Circuit Breaker Compressor Internal Thermostat Pressure Switch Auto reset Micro switch Manual reset Shutdown by...

Page 6: ...0g Actuator and Reed Switch Time delay controlled Float Switch and Solenoid Valve 6A Circuit Breaker Compressor Internal Thermostat Pressure Switch Auto reset Micro switch Manual reset Shutdown by Mic...

Page 7: ...ent Temp 21 C Water Temp 15 C Approx 75kg Ambient Temp 32 C Water Temp 21 C Approx 0 110m 3 Ambient Temp 10 C Water Temp 10 C Approx 0 096m 3 Ambient Temp 21 C Water Temp 15 C Approx 0 075m 3 Ambient...

Page 8: ...and Reed Switch Time delay controlled Float Switch and Solenoid Valve 6A Circuit Breaker Compressor Internal Thermostat Pressure Switch Auto reset Micro switch Manual reset Shutdown by Microprocessor...

Page 9: ...ator and Reed Switch Time delay controlled Float Switch and Solenoid Valve 6A Circuit Breaker Compressor Internal Thermostat Pressure Switch Auto reset Micro switch Manual reset Shutdown by Microproce...

Page 10: ...7 2 CONSTRUCTION a FM 120KE HC N FM 120KE 50 HC N Evaporator Compressor Gear Motor Fan Motor Flush Water Valve Control Water Valve Bin Control Switch Reservoir Air Cooled Condenser Control Box...

Page 11: ...8 8 b FM 80KE HC N Evaporator Compressor Gear Motor Fan Motor Flush Water Valve Control Water Valve Bin Control Switch Reservoir Air Cooled Condenser Control Box...

Page 12: ...or severe water conditions IMPORTANT 1 PERIODIC PARTS REPLACEMENT The extruding head upper bearing and mechanical seal must be replaced after four years from installation or 20 000 hours of operation...

Page 13: ...llation date Note The clearance between the auger blades and the evaporator interior is 0 4 0 5 mm If the bearings and rotating parts are worn out to create a larger clearance the evaporator interior...

Page 14: ...ore removing the auger for service 5 CONDENSER AIR COOLED MODEL ONLY Check the condenser once a year and clean if required by using a brush or vacuum cleaner More frequent cleaning may be required dep...

Page 15: ...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 7 Conne...

Page 16: ...immediately 7 Do not use any ammonia type cleaners on any part of the icemaker WARNING Do not use ice produced with cleaning and sanitizing solutions Be sure none remains in the storage bin on complet...

Page 17: ...ystem to drain 13 Allow the icemaker to make ice for approximately 10 minutes 14 Pour warm water into the storage bin to melt any ice down the drain Note 1 If the machine has heavy deposits of scale r...

Page 18: ...with clean water If the solution is left on these parts they will corrode IMPORTANT 21 Refit the removed parts in reverse order 22 Close the water supply tap Actuator Base Tab Actuator To remove actu...

Page 19: ...120KE 50 HC N CONTROL WATER VALVE WATER SUPPLY GEAR MOTOR WATER VALVE RESERVOIR EVAPORATOR FLUSH WATER VALVE EXPANSION VALVE DRAIN PAN DRIER DRAIN FAN MOTOR COMPRESSOR FAN CONDENSER AIR COOLED HEAT EX...

Page 20: ...R WATER VALVE RESERVOIR EVAPORATOR FLUSH WATER VALVE DRAIN PAN DRIER DRAIN FAN MOTOR COMPRESSOR FAN CAPILLARY TUBE CONDENSER AIR COOLED WATER SUPPLY HEAT EXCHANGER 700mm Pressure switch Cut out 2 26 0...

Page 21: ...WATER VALVE RELAY X5 BIN CONTROL SWITCH PROTECTION SWITCH PRESSURE SWITCH FLOAT SWITCH CONTROL BOX CONTROL BOX COVER START CAP ICEMAKING WATER LEAK E0 c0 E1 E2 E5 EF c3 EL EP EU c1 c4 E3 EE c5 E4 c2...

Page 22: ...ARD OPERATION X1 POWER RELAY CONTROL WATER VALVE ON BOARD X2 POWER RELAY FLUSH WATER VALVE ON BOARD X3 POWER RELAY GEAR MOTOR ON BOARD X4 POWER RELAY COMPRESSOR ON BOARD X5 POWER RELAY GM DRIVE DETECT...

Page 23: ...FM 80KE HC FM 120KE 50 HC FM 80KE HCN FM 120KE 50 HCN Sealing Bolt Flange Evaporator Screw O Ring Housing Coupling Spline Gear Motor Mechanical Seal Ring Auger Extruding Head Cutter Cutter Extruding...

Page 24: ...o a column shape with the path resistance d HOUSING The cast bronze housing is provided with a press fit plastic bearing inside and fixed on the bottom of the evaporator for connection with the gear m...

Page 25: ...resulting in breaking the welded joints To avoid the load the flange has been changed to a separate part to be secured together with the extruding head by using sealing bolts j SEALING BOLT Sometimes...

Page 26: ...n control switch or the stop button is pressed When the compressor operates for 6 hours in total and continuously for more than 10 minutes the icemaker supplies water until the reservoir fills up and...

Page 27: ...or ON OFF Bin Control Switch ON OFF Drain Water Valve ON OFF ICE Indication ON OFF STOP Indication ON OFF BIN FULL Indication ON OFF DRAIN Indication ON OFF Compressor ON OFF 5min 5min 5min 5min 5min...

Page 28: ...NUMBER The model number must be set at the time of replacement of the controller board Check the model number specified on the wiring label Improper setting may result in failure or inoperability 1 P...

Page 29: ...e 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 Press and hold MAINTENANCE A Compressor operating...

Page 30: ...inutes then seconds for 2 seconds each time from the latest record 5 records at maximum Then appears in the display to show the end of the cycle time display mode If no cycle time is recorded the disp...

Page 31: ...OR LOG Press and hold the maintenance A button and press the stop button The display shows the following items one by one every time the stop button is pressed This function is available in the ice or...

Page 32: ...n should be performed only when the display shows PC With the power switch turned off press and hold the ice stop and maintenance A buttons Move the operation switch to the ON position Release the but...

Page 33: ...ater supply cycle ends 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 operation...

Page 34: ...oard Gear motor relay is OFF with gear motor protective circuit detector ON E8 Discharge Pipe Temperature Error Discharge pipe thermostat is OFF Whole unit stops Power supply Turn OFF Turn ON Gas leak...

Page 35: ...set point for 5 seconds Whole unit stops Automatically resets after pressure switch turns ON or condenser thermistor reads lower than set point Condenser clogged cooling water circuit refrigeration ci...

Page 36: ...08 0 10 0 14 0 16 6 7 8 9 180 200 220 240 260 Water Consumption m 3 day Suction Pressure kPa Wattage kWh day 0 06 0 12 60 80 100 120 140 160 1 8 1 9 2 2 1 600 800 1000 1200 1400 0 10 20 30 40 0 10 20...

Page 37: ...0 6 7 8 9 0 10 20 30 40 600 800 1000 1200 1400 0 10 20 30 40 180 200 220 240 260 0 10 20 30 40 Ice Production Capacity kg day Head Pressure kPa Amperage A Water Consumption m 3 day Suction Pressure kP...

Page 38: ...4 1 45 1 5 600 800 1000 1200 1400 Ice Production Capacity kg day Head Pressure kPa Amperage A 5 5 6 6 5 7 100 150 200 250 300 0 10 20 30 40 0 10 20 30 40 0 10 20 30 40 0 10 20 30 40 Suction Pressure...

Page 39: ...0 10 20 30 40 600 800 1000 1200 1400 0 10 20 30 40 100 150 200 250 300 0 10 20 30 40 Ice Production Capacity kg day Head Pressure kPa Amperage A Water Consumption m 3 day Suction Pressure kPa Wattage...

Page 40: ...Wait till water is supplied h Plug and receptacle control box 1 Disconnected 1 Connect 2 Terminal out of plug or receptacle 2 Insert terminal back in position i Reed switch spout 1 Tripped 1 See 1 3...

Page 41: ...d contacts 2 Check for continuity and replace 4 Gear motor starts but compressor will not start or operates intermittently a X4 relay controller board 1 Bad contacts 1 Check for continuity and replace...

Page 42: ...1 Replace d Evaporator 1 Evaporator pipe crushed 1 Replace 3 OTHERS PROBLEM POSSIBLE CAUSE REMEDY 1 Abnormal noise a Fan motor condenser unit 1 Bearing worn out 1 Replace 2 Fan blade deformed 2 Repla...

Page 43: ...ng valve b Water valve 1 Diaphragm does not close 1 Clean or replace c Float switch 1 Bad contacts 1 Check for continuity and replace 3 Gear motor protector operates frequently a Power supply voltage...

Page 44: ...rier designed for R290 3 Handling of Handy Flux R290 Brazing is needed to connect the refrigeration circuit pipes It is no problem to use the same handy flux that has been used for the current refrige...

Page 45: ...ed to outdoors atmosphere without risk to the environment Recovery should only be considered if the unit cannot be taken outdoors to evacuate the circuit If R290 is recovered in a refrigerant recovery...

Page 46: ...ff the access valve 9 Always cap the access valves 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...

Page 47: ...process See 2 WELDING REPAIR FOR R290 REFRIGERATION CIRCUIT 5 Remove the discharge suction and access pipes from the compressor using brazing equipment 1 When it is required to disconnect the pipes us...

Page 48: ...gerant charge See 1 d EVACUATION AND RECHARGE 16 Connecttheterminalstothecompressor and replace the terminal cover in its correct position 17 Refit the panels in their correct position 18 Connect the...

Page 49: ...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 o...

Page 50: ...anel in its correct position 13 Connect the power source 6 WATER REGULATING VALVE WATER COOLED MODEL ONLY Always install a new drier every time the sealed refrigeration system is opened Do not replace...

Page 51: ...lug in the icemaker 15 Check for water leaks 16 If necessary adjust the valve 17 Replace the panels in position 7 EVAPORATOR ASSEMBLY See the exploded view under III 3 ICEMAKING MECHANISM 1 Push the s...

Page 52: ...idual refrigerant still existing in the unit to allow welding process See 2 WELDING REPAIR FOR R290 REFRIGERATION CIRCUIT Always install a new drier every time the sealed refrigeration system is opene...

Page 53: ...l before replacing the bearing Note If a fitting tool is not available replace the whole lower housing complete with bearing GEAR MOTOR 22 Cut the connectors 23 Remove the three socket head cap screws...

Page 54: ...onnect the power source 11 Check for water leaks 12 Refit the panels in their correct position 9 FLUSH WATER VALVE 1 Push the stop button and after 5 minutes disconnect the power source 2 Close the wa...

Page 55: ...he field Replace the whole board with a new service board IMPORTANT a MODIFICATION 1 Check that the service board package includes Controller board 1 pc Instruction sheet 1 pc 2 Modify the service boa...

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