Hoshizaki KM-1301SAH-E, KM-1301SRH-E, KM-1301SWH-E service manual

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III. Technical Information	25
A. Water Circuit and Refrigeration Circuit	25
1. KM-1301SAH-E (air-cooled)	25
2. KM-1301SWH-E (water-cooled)	26
3. KM-1301SRH-E (remote air-cooled)	27
B. Wiring Diagrams	28
1. Auxiliary Code T-0, U-0	28
a) KM-1301SAH-E (air-cooled)	28
2. Auxiliary Code U-1 and Later	29
a) KM-1301SAH-E (air-cooled)	29
b) KM-1301SWH-E (water-cooled)	30
c) KM-1301SRH-E (remote air-cooled)	31
C. Performance Data	32
1. KM-1301SAH-E (air-cooled)	32
2. KM-1301SWH-E (water-cooled)	33
3. KM-1301SRH-E (remote air-cooled)	34
IV. Service Diagnosis	35
A. Diagnostic Procedure	35
B. Control Board Check	39
C. Bin Control Check	40
1. Thermostatic Bin Control Check: KM-1301SAH-E	40
2. Mechanical Bin Control Check and Cleaning: KM-1301SWH-E, KM-1301SRH-E.. 40
a) Mechanical Bin Control Check	40
b) Mechanical Bin Control Cleaning	42
D. Float Switch Check and Cleaning	43
1. Float Switch Check	43
2. Float Switch Cleaning	44
E. Thermistor Check	45
F. Adjustment of Water Regulating Valve (water-cooled model)	45
G. Diagnostic Charts	46
1. No Ice Production	46
2. Freeze Up	48
3. Low Ice Production	50
V. Replacement of Components	51
A. Service for Refrigerant Lines	51
1. Refrigerant Recovery	51
2. Brazing	52
3. Evacuation and Recharge (R-404A)	52
B. Important Notes for Component Replacement	54
VI. Cleaning and Maintenance	55
A. Cleaning and Sanitizing Instructions	55
1. Cleaning Procedure	55
2. Sanitizing Procedure - Following Cleaning Procedure	57
B. Maintenance	58
C. Preparing the Icemaker for Long Storage	58

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Contents Superior Degree Reliability Hoshizaki AMERICA, INC Contents Page Important Safety Information Serious injuryIndicates important information about the use and care UnitSpecifications Icemaker KM-1301SAH-E air-cooledKM-1301SWH-E water-cooled KM-1301SRH-E remote air-cooled Condenser Unit URC-14FESpecifications II. General Information Construction KM-1301SWH-E water-cooled Separators Sequence of Operation Sequence Cycles and ShutdownMinute Fill Cycle Initial Harvest CycleS4 Dip Switch Setting Pump-Out 1st Pump-Out Frequency Freeze CyclePump-Out Cycle Harvest CycleMechanical Bin Control KM-1301SWH-E, KM-1301SRH-E Cycle at Shutdown Mechanical Bin Control ActivationSequence Flow Chart Cycle Steps Minute Fill Harvest CyclePump-Out Cycle Mechanical BC Bin Full Shutdown and RestartControl Board Control Board Layout Control BoardLED Lights and Audible Alarm Safeties No. of Beeps Type of Alarm Every 3 secSequence Step Time LEDs are OnDefault Dip Switch Settings Controls and AdjustmentsHarvest Timer S4 dip switch 1 Pump-Out Frequency Control S4 dip switch 5 Pump-Out Timer S4 dip switch 3Time seconds Inlet Harvest Pump Timer S4 dip switch Factory Use S4 dip switchFreeze Timer S4 dip switch 9 S4 Dip Switch Setting Pump Motor Time secondsFloat Switch Control S5 dip switch Control SwitchRefill Counter S5 dip switch 2 through Tank Water Tank Headmaster Service Drier Valve Thermistor Wiring Diagrams Auxiliary Code T-0, U-0KM-1301SAH-E air-cooled U-0 Auxiliary CodeAuxiliary Code U-1 and Later PressureSwitch KM-1301SRH-E remote air-cooled Performance Data 1330 12401780 13351270 11421950 2070IV. Service Diagnosis Diagnostic ProcedurePage S4 Dip Switch Setting Pump-Out 1st Pump-Out Frequency Shutdown Thermostatic Bin Control KM-1301SAH-E Mechanical Bin Control KM-1301SWH-E, KM-1301SRH-EControl Board Check Thermostatic Bin Control Check KM-1301SAH-E Bin Control CheckMechanical Bin Control Check Single Unit Connection Detail Stacked Unit Connection DetailMechanical Bin Control Cleaning Float Switch Check and Cleaning Float Switch CheckFloat Switch Cleaning Adjustment of Water Regulating Valve water-cooled model Thermistor CheckNo Ice Production Diagnostic ChartsNo Ice Production Possible Cause No Ice Production Possible Cause Freeze Up Freeze Up Possible Cause Harvest CycleFreeze Up Possible Cause Freeze Cycle Low Ice Production Possible Cause Long Harvest Cycle Low Ice ProductionLong Freeze Cycle Service for Refrigerant Lines Replacement of ComponentsRefrigerant Recovery Brazing Evacuation and Recharge R-404APage Important Notes for Component Replacement ComponentVI. Cleaning and Maintenance Cleaning ProcedureIce Chute Float Switch Assembly Drain Plug Sanitizing Procedure Following Cleaning Procedure Maintenance Remove the water from the icemaker water supply lineDrain the water tank