Hoshizaki KM-1300MAH, KM-1300MWH, KM-1300MRH service manual Maintenance

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IV. SERVICE DIAGNOSIS

37

1.

NO ICE PRODUCTION

37

2.

EVAPORATOR IS FROZEN UP

40

3.

LOW ICE PRODUCTION

40

4.

ABNORMAL ICE

41

5.

OTHERS

41

V. REMOVAL AND REPLACEMENT OF COMPONENTS

42

1.

SERVICE FOR REFRIGERANT LINES

42

 

[a] REFRIGERANT RECOVERY

42

 

[b] EVACUATION AND RECHARGE [R-404A]

42

2.

BRAZING

43

3.

REMOVAL AND REPLACEMENT OF COMPRESSOR

44

4.

REMOVAL AND REPLACEMENT OF DRIER

45

5.

REMOVAL AND REPLACEMENT OF EXPANSION VALVE

46

6.

REMOVAL AND REPLACEMENT OF HOT GAS VALVE,

 

 

AND LINE VALVE

47

7.

REMOVAL AND REPLACEMENT OF EVAPORATOR

48

8.

REMOVAL AND REPLACEMENT OF WATER-REGULATING VALVE

 

 

- WATER COOLED MODEL ONLY

49

9.

ADJUSTMENT OF WATER-REGULATING VALVE

 

 

- WATER COOLED MODEL ONLY

50

10. REMOVAL AND REPLACEMENT OF CONDENSING PRESSURE

 

 

REGULATOR (C.P.R.) - REMOTE AIR-COOLED MODEL ONLY

51

11. REMOVAL AND REPLACEMENT OF THERMISTOR

52

12. REMOVAL AND REPLACEMENT OF FAN MOTOR

53

13. REMOVAL AND REPLACEMENT OF WATER VALVE

54

14. REMOVAL AND REPLACEMENT OF PUMP MOTOR

55

15. REMOVAL AND REPLACEMENT OF SPRAY TUBES

56

VI. MAINTENANCE AND CLEANING INSTRUCTIONS

56

1.

PREPARING THE ICEMAKER FOR LONG STORAGE

56

2.

CLEANING

58

 

[a] CLEANING PROCEDURE

59

 

[b] SANITIZING PROCEDURE

60

3.

MAINTENANCE

62

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Contents KM-1300MAH KM-1300MWH KM-1300MRH Hoshizaki AMERICA, INC Contents Maintenance Specifications KM-1300MAH Air-cooled2a. KM-1300MWH Water-cooled 2b. KM-1300MWH Water-cooled Serial No. M10156D KM-1300MRH Remote air-cooled Condensing Unit URC-12F Specifications Model URC-12F II. General Information Construction KM-1300MWH Water-cooled KM-1300MRH Remote air-cooled Features of Control Products E Controller Board Controller BoardSOLID-STATE Control Controller BoardPage Beep every 3 sec. = High Evaporator Temperature 127 F Minute Fill CycleHarvest Cycle Freeze CycleControl Products HOS-001A Board Sequence 1st Cycle 2nd Cycle and after with pump drain 2nd Cycle and after with no pump drain Controls and Adjustments Setting Time Setting Frequency Checking the Controller Board Page III. Technical Information KM-1300MWH Water-cooled KM-1300MRH Remote air-cooled Wiring Diagrams KM-1300MAH Air-cooled and KM-1300MWH Water-cooledCut-out 412 ±21.3 Psig Cut-in 327±21.3 Psig Timing Chart Page Performance Data Serial # L00001F to M10155C KM-1300MWH Water-cooled Serial # M10156D KM-1300MRH Remote air-cooled IV. Service Diagnosis No ICE Production Problem Possible Cause RemedyController Board Problem Possible Cause Remedy Evaporator is Frozen UP LOW ICE ProductionAbnormal ICE OthersRefrigerant Recovery Service for Refrigerant LinesEvacuation and Recharge R-404A Brazing Removal and Replacement of Compressor Important Removal and Replacement of Drier Removal and Replacement of Expansion Valve Removal and Replacement of HOT GAS Valve and Line Valve Removal and Replacement of Evaporator Important Page Page Page Removal and Replacement of Thermistor Important Removal and Replacement of FAN Motor Removal and Replacement of Water Valve Removal and Replacement of Pump MotorRemoval and Replacement of Spray Tubes VI. Maintenance and Cleaning Instructions Preparing the Icemaker for Long StoragePage Cleaning Cleaning Procedure Sanitizing Procedure Following Cleaning Procedure Page Maintenance