Hoshizaki KM-1300MWH, KM-1300MAH, KM-1300MRH service manual Controls and Adjustments

Page 21

[d] CONTROLS AND ADJUSTMENTS

The Dip Switch is factory-adjusted to the following positions:

DIP SWITCH NO.

1

2

3

4

5

6

7

8

9

10

 

 

 

 

 

 

 

 

 

 

 

KM-1300MAH

OFF

OFF

ON

ON

ON

ON

OFF

OFF

OFF

OFF

 

 

 

 

 

 

 

 

 

 

 

KM-1300MWH

OFF

OFF

ON

OFF

ON

ON

OFF

OFF

OFF

ON

 

 

 

 

 

 

 

 

 

 

 

KM-1300MRH

OFF

OFF

ON

OFF

ON

ON

OFF

OFF

OFF

OFF

 

 

 

 

 

 

 

 

 

 

 

Switch Nos. 1 and 2:

Used for adjustment of the Defrost Timer.

The Defrost Timer starts counting when the Thermistor reads a certain temperature at the Evaporator outlet.

Switch Nos. 3 and 4:

Used for adjustment of the Drain Timer.

When a freeze cycle is completed, the Pump Motor stops, and the icemaker resumes operation in 2 seconds. Then the Pump Motor drains the Water Tank for the time determined by the Drain Timer. The Drain Timer also determines the time to restrain completion of a defrost cycle, i.e. the minimum defrost time.

Switch Nos. 5 and 6:

Used for adjustment of the Drain Counter.

The Pump Motor drains the Water Tank at the frequency determined by the Drain Counter.

Switch Nos. 7 and 8:

Used only for checking the Controller Board. Usually set in OFF position.

Switch Nos. 9 and 10:

Used for adjustment of Freeze Timer. The Freeze Timer determines maximum freeze cycle time. Upon termination of Freeze Timer, machine initiates the harvest cycle. After 2 consecutive timer terminations, machine will shut down, possibly indicating a problem.

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Contents KM-1300MAH KM-1300MWH KM-1300MRH Hoshizaki AMERICA, INC Contents Maintenance KM-1300MAH Air-cooled Specifications2a. 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 Controller Board Features of Control Products E Controller BoardSOLID-STATE Control Controller BoardPage Minute Fill Cycle Beep every 3 sec. = High Evaporator Temperature 127 FHarvest 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 KM-1300MAH Air-cooled and KM-1300MWH Water-cooled Wiring DiagramsCut-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 Problem Possible Cause Remedy IV. Service Diagnosis No ICE ProductionController Board Problem Possible Cause Remedy LOW ICE Production Evaporator is Frozen UPOthers Abnormal ICEService for Refrigerant Lines Refrigerant RecoveryEvacuation 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 Pump Motor Removal and Replacement of Water ValveRemoval and Replacement of Spray Tubes Preparing the Icemaker for Long Storage VI. Maintenance and Cleaning InstructionsPage Cleaning Cleaning Procedure Sanitizing Procedure Following Cleaning Procedure Page Maintenance