Hoshizaki KM-1301SRH-E, KM-1301SAH-E Freeze Cycle, Pump-Out Cycle, Harvest Cycle, Shutdown

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c) Freeze Cycle

LED 1 is on. Comp and FMR remain energized, PM energizes or remains energized depending on harvest pump timer (S4 dip switch 7) setting. FM and LLV energize. HGV and X1 relay (auxiliary code T-0, U-0), X10 relay (auxiliary code U-1 and later) deenergize. For the first 5 minutes, CB will not accept a signal from F/S. This minimum 5-minute freeze time is short cycle protection for Comp. At the end of 5 minutes, F/S assumes control. As ice builds on the evaporator, the water level in the tank lowers. The freeze cycle continues until F/S opens and terminates the cycle. There is a 15 second delay before CB acknowledges an open F/S.

d) Pump-Out Cycle

LEDs 1, 3, and 2 are on. LED 4 is on when S4 dip switch 3 & 4 are set to 3 off and 4 on. For details, see "II.C.2.c) Pump-Out Timer (S4 dip switch 3 & 4)." CAUTION! Do not adjust S4 dip switch 3 & 4 to 3 off and 4 on. Adjustment to this position on this model prevents the pump motor from rotating in the pump-out direction. Comp and FMR remain energized, HGV energizes, WV energizes if S4 dip switch 3 off and 4 on. LLV and FM deenergize. PM stops for 2 seconds then reverses, taking water from the bottom of the tank and forcing pressure against the check valve seat allowing water to go through the check valve and down the drain. At the same time, water flows through the small tube to power flush F/S. When the pumpout timer terminates, the pump-out is complete.

The first pump-out occurs after the 11th freeze cycle, then every 10th cycle thereafter. The pump-out frequency control is factory set, and generally no adjustment is required. However, where water quality is bad and the icemaker needs a pump-out more often, the pump-out frequency can be adjusted. The pump-out frequency control (S4 dip switch 5 & 6) can be set to have a pump-out occur every cycle, or every 2, 5, or 10 cycles. Timing of the first pump-out is dependent on S4 dip switch 5 & 6 settings. See the table below.

S4 Dip Switch Setting

Pump-Out

1st Pump-Out

No. 5

No. 6

Frequency

 

OFF

OFF

Every cycle

After 2nd freeze cycle

 

 

 

 

ON

OFF

Every 2 cycles

After 3rd freeze cycle

 

 

 

 

OFF

ON

Every 5 cycles

After 6th freeze cycle

 

 

 

 

ON

ON

Every 10 cycles

After 11th freeze cycle

e) Harvest Cycle

Same as the initial harvest cycle. See "II.B.1.b) Initial Harvest Cycle."

Note: Unit continues to cycle until BC is satisfied or power is turned off. The unit always restarts at the 1-minute fill cycle.

f) Shutdown

(1) Thermostatic Bin Control (KM-1301SAH-E)

When ice contacts the thermostatic BC bulb (BC open), thermostatic BC shuts down the unit within 10 seconds. Thermostatic BC is factory set, and generally no adjustment is required. However, adjustment may be needed in some conditions, particularly at higher altitude locations.

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Contents Superior Degree Reliability Hoshizaki AMERICA, INC Contents Page Unit Important Safety InformationSerious injury Indicates important information about the use and careKM-1301SAH-E air-cooled Specifications IcemakerKM-1301SWH-E water-cooled KM-1301SRH-E remote air-cooled URC-14FE Condenser UnitSpecifications II. General Information Construction KM-1301SWH-E water-cooled Separators Initial Harvest Cycle Sequence of OperationSequence Cycles and Shutdown Minute Fill CycleHarvest Cycle S4 Dip Switch Setting Pump-Out 1st Pump-Out FrequencyFreeze Cycle Pump-Out CycleCycle at Shutdown Mechanical Bin Control Activation Mechanical Bin Control KM-1301SWH-E, KM-1301SRH-EMechanical BC Bin Full Shutdown and Restart Sequence Flow ChartCycle Steps Minute Fill Harvest Cycle Pump-Out CycleControl Board Control Board Control Board LayoutTime LEDs are On LED Lights and Audible Alarm SafetiesNo. of Beeps Type of Alarm Every 3 sec Sequence StepControls and Adjustments Default Dip Switch SettingsHarvest Timer S4 dip switch 1 Pump-Out Timer S4 dip switch 3 Pump-Out Frequency Control S4 dip switch 5Time seconds Inlet S4 Dip Switch Setting Pump Motor Time seconds Harvest Pump Timer S4 dip switchFactory Use S4 dip switch Freeze Timer S4 dip switch 9Control Switch Float Switch Control S5 dip switchRefill Counter S5 dip switch 2 through Tank Water Tank Headmaster Service Drier Valve Thermistor U-0 Auxiliary Code Wiring DiagramsAuxiliary Code T-0, U-0 KM-1301SAH-E air-cooledAuxiliary Code U-1 and Later PressureSwitch KM-1301SRH-E remote air-cooled Performance Data 1335 13301240 17802070 12701142 1950Diagnostic Procedure IV. Service DiagnosisPage S4 Dip Switch Setting Pump-Out 1st Pump-Out Frequency Mechanical Bin Control KM-1301SWH-E, KM-1301SRH-E Shutdown Thermostatic Bin Control KM-1301SAH-EControl Board Check Bin Control Check Thermostatic Bin Control Check KM-1301SAH-EMechanical Bin Control Check Stacked Unit Connection Detail Single Unit Connection DetailMechanical Bin Control Cleaning Float Switch Check Float Switch Check and CleaningFloat Switch Cleaning Thermistor Check Adjustment of Water Regulating Valve water-cooled modelDiagnostic Charts No Ice ProductionNo Ice Production Possible Cause No Ice Production Possible Cause Freeze Up Possible Cause Harvest Cycle Freeze UpFreeze Up Possible Cause Freeze Cycle Low Ice Production Low Ice Production Possible Cause Long Harvest CycleLong Freeze Cycle Replacement of Components Service for Refrigerant LinesRefrigerant Recovery Evacuation and Recharge R-404A BrazingPage Component Important Notes for Component ReplacementCleaning Procedure VI. Cleaning and MaintenanceIce Chute Float Switch Assembly Drain Plug Sanitizing Procedure Following Cleaning Procedure Remove the water from the icemaker water supply line MaintenanceDrain the water tank