Manuals / Hoshizaki / Kitchen Appliance / Ice Maker

Hoshizaki KM-1301SAH/3, SRH/3 Diagram, C. Water/Refrigeration Circuit, Air-Cooled Models SAH/3

Models: SRH/3 KM-1900SAH/3 SRH3 KM-2500SWH3 SRH3 KMH-2000SWH/3 SWH/3 KM-1301SAH/3 SWH3-M KM-1601SAH/3 SRH/3 KM-1400SWH-M SRH/3 KM-2100SWH3 SRH/3

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Page 13

Water

13

Spray Tubes

Water

Tank

Water Supply

Inlet Water Valve

Spray Tubes

Condenser

Evaporator

	Cleaning Valve	Fan	Drier
	Thermistor
		Liquid Line				High-Pressure
		Valve				Switch
		Heat Exchanger				Hot Gas
						Valve
		Service Suction Line
		Service Suction Line
		Valve
						Strainer	Check
							Check
							Valves
Check Valve	Float Switch		Service				Valves
Check Valve	Float Switch		Service
			Valve

		Compressor	Discharge Line
		Compressor
	Drain
Water Pump		Thermostatic Expansion Valves
		Thermostatic Expansion Valves
Freeze/Harvest Pump-Out
Pump Timer

1. Air-Cooled Models (SAH/3)	C. Water/Refrigeration Circuit
	Diagram

Refrigeration Circuit Water Circuit

Image 13

Hoshizaki KM-1301SAH/3, SRH/3, SWH/3 Diagram, C. Water/Refrigeration Circuit, Air-Cooled Models SAH/3, Water Tank

Contents

Stackable Crescent Cuber Models SERVICE MANUALHoshizakiHoshizaki America, Inc Phone 1-800-233-1940 770 Fax 1-800-843-1056 Complete and detailed explanation of the problemE-mail techsupport@hoshizaki.com HOSHIZAKI AMERICA, INC 618 Highway 74 South Peachtree City, GACONTENTS 1. Default Dip Switch Settings C. Settings and Adjustmentsa E and G Control Board without Harvest Pump Timer Operation b G Control Board with Harvest Pump Timer Operation23. KM-1900SRH with URC-21F Indicates a hazardous situation which could result in death or Important Safety Informationserious injury Indicates a situation which could result in damage to theAdditional Warning for Remote Models WARNING, continuedA. KM Construction I. Construction and Water/Refrigeration Circuit Diagram1. Air-Cooled Models SAH/3 Model Shown KM-1301SAH3Model Shown KM-1301SWH3 2. Water-Cooled Models SWH/3/-MNote KM-2500SRH3 Includes Headmaster C.P.R Model Shown KM-1301SRH3 3. Remote Models SRH/31. Water-Cooled Models SWH/3 B. KMH ConstructionModel Shown KMH-2000SWH3 Model Shown KMH-2000SWH3Model Shown KMH-2000SRH3 2. Remote Models SRH/3Model Shown KMH-2000SRH3 C. Water/Refrigeration Circuit Diagram1. Air-Cooled Models SAH/3 Water TankWater Tank Water-Cooled Models SWH/3/-MWater Regulating Valve CondenserCondenser Unit with Headmaster KM-2500SRH33a. Remote Models SRH/3 Except Water TankTank WaterFreeze Pump-OutII. Sequence of Operation and Service Diagnosis A. Sequence of Operation Flow ChartE and G Control Board without Harvest Pump Timer Operation Flow Chart Components Energized when the Control Switch is in the WASH Position2. G Control Board with Harvest Pump Timer Operation G Control Board with Harvest Pump Timer Operation Flow ChartComponents Energized when the Control Switch is in the WASH Position B. Service Diagnosis 1. E and G Control Board without Harvest Pump Timer Diagnosis d WRV Diagnosis Confirm WRV is not leaking by For LLV check coil voltage and continuity After 11th freeze cycle 9 Shutdown E and G Control Board 2. G Control Board with Harvest Pump Timer Diagnosis d WRV Diagnosis Confirm WRV is not leaking by 50 sec. before harvest terminates, PM energizes. See step 5b belowR and neutral W, check PM capacitor and motor winding continuity For LLV, check coil voltage and continuity 7 Pump-Out Cycle - LEDs 1, 3, and 2 are on 10/20 second pump-out. Timing of the first pump-out is determined by S4 dip switch 5 & 6. See the table below 9 Shutdown G Control Board C. Control Board Check D. Bin Control Check 1. Float Switch Check E. Float Switch Check and CleaningVent Flush Shaft Float Switch Housing Float Retainer Rod Rubber Boot 2. Float Switch Cleaningand Hose Thermistor Lead F. Thermistor CheckCable Tie Foam Insulation1. No Ice Production G. Diagnostic TablesNo Ice Production - Possible Cause No Ice Production - Possible Cause 2. Freeze-UpFreeze-Up - Possible Cause Harvest CycleFreeze-Up - Possible Cause 3. Low Ice ProductionFreeze Cycle Low Ice Production - Possible CauseLong Freeze Cycle Low Ice Production - Possible CauseIII. Controls and Adjustments E Control Board A. Control Board Layout1. E Control Board E Control Board2. G Control Board G Control BoardG Control Board Part Number 2A3792-011. E Control Board B. LED Lights and Audible Alarm Safeties2. G Control Board 1. Default Dip Switch Settings C. Settings and Adjustmentsa E and G Control Board without Harvest Pump Timer Operation c G Control Board S5 Dip Switch b G Control Board with Harvest Pump Timer OperationS4 Dip Switch E and G Control Boards S5 Dip Switch3. Pump-Out Timer S4 dip switch 3 a Bin Control Selector E Control Board 4. Pump-Out Frequency Control S4 dip switch 56. Factory Use S4 dip switch b Harvest Pump Timer G Control Board7. Freeze Timer S4 dip switch 9 8. Float Switch Selector S5 dip switch 1 G Control Board D. Control Switch9. Refill Counter S5 dip switch 2 through 5 G Control Board A. Refrigeration Circuit Service Information IV. Refrigeration Circuit and Component Service Information1. Refrigerant Recovery 3. Evacuation and Recharge R-404A 2. Brazing4 Close the low-side valve and high-side valve on the gauge manifold Component B. Component Service InformationC. Water Regulating Valve Adjustment water-cooled models V. Maintenance 1. Remove the water from the icemaker water supply line VI. Preparing the Icemaker for Periods of Non-Use2. Drain the water tank 6 Close the drain valves VII. Disposal VIII. Technical Information A. Specification and Performance Data1. KM-1301SAH 2. KM-1301SAH3 1318 3. KM-1301SWH1323 17404. KM-1301SWH3 5. KM-1301SRH with URC-14F 6. KM-1301SRH3 with URC-14F 7. KM-1400SWH-M 8. KM-1400SWH3-M SPECIFICATION SHEET 9. KM-1601SAHPERFORMANCE DATA SHEET 1462SPECIFICATION SHEET 10. KM-1601SAH3PERFORMANCE DATA SHEET 1456SPECIFICATION SHEET 11. KM-1601SWHPERFORMANCE DATA SHEET 12. KM-1601SWH3 13. KM-1601SRH with URC-21F Auxiliary Codes R-0, R-1, and some S-1 PERFORMANCE DATA SHEET SPECIFICATION SHEET15. KM-1601SRH with URC-22F Auxiliary Codes S-2 and Later SPECIFICATION SHEET 16. KM-1601SRH3 with URC-21F Auxiliary Codes R-0, R-1, and some S-1PERFORMANCE DATA SHEET PERFORMANCE DATA SHEET SPECIFICATION SHEETSPECIFICATION SHEET 18. KM-1601SRH3 with URC-22F Auxiliary Codes S-2 and LaterPERFORMANCE DATA SHEET 1530SPECIFICATION SHEET 19. KM-1900SAHPERFORMANCE DATA SHEET 2480SPECIFICATION SHEET 20. KM-1900SAH3PERFORMANCE DATA SHEET 1859SPECIFICATION SHEET 21. KM-1900SWHPERFORMANCE DATA SHEET 1876SPECIFICATION SHEET 22. KM-1900SWH3PERFORMANCE DATA SHEET 1814SPECIFICATION SHEET 23. KM-1900SRH with URC-21FPERFORMANCE DATA SHEET 2630SPECIFICATION SHEET 24. KM-1900SRH with URC-22FPERFORMANCE DATA SHEET 1857SPECIFICATION SHEET 25. KM-1900SRH3 with URC-21FPERFORMANCE DATA SHEET 1965SPECIFICATION SHEET 26. KM-1900SRH3 with URC-22FPERFORMANCE DATA SHEET SPECIFICATION SHEET 27. KM-2100SWH3PERFORMANCE DATA SHEET 2096SPECIFICATION SHEET 28. KM-2100SRH3 with URC-22FPERFORMANCE DATA SHEET 3210SPECIFICATION SHEET 29. KM-2500SWH3PERFORMANCE DATA SHEET 2408SPECIFICATION SHEET 30. KM-2500SRH3 with URC-23FPERFORMANCE DATA SHEET 3780SPECIFICATION SHEET 31. KMH-2000SWHPERFORMANCE DATA SHEET 182132. KMH-2000SWH3 SPECIFICATION SHEET 33. KMH-2000SRH with URC-22FPERFORMANCE DATA SHEET 1944SPECIFICATION SHEET 34. KMH-2000SRH3 with URC-22FPERFORMANCE DATA SHEET 1. Diagrams without Harvest Pump Timer Relays E and G Control Boards B. Wiring Diagramsa KM-1601SWH, KM-1601SRH, KM-1900SH, KMH-2000SH SwitchPressure-High KM-2500SH3, KMH-2000SH3b KM-1601SWH3, KM-1601SRH3, KM-1900SH3, KM-2100SH3 384±22a KM-1301SH Auxiliary Code T-0, U-0 2. Diagrams with Harvest Pump Timer Relays G Control BoardT-0, U-0 Auxiliary Codeb KM-1301SH3 Auxiliary Code T-0, U-0 c KM-1301SH Auxiliary Code U-1 and Later and KM-1601SAH d KM-1301SH3 Auxiliary Code U-1 and Later and KM-1601SAH3 High-Pressure Switch e KM-1400SWH-MControl Transformer Output 10.5V at Water-Cooled Modelf KM-1400SWH3-M High-Pressure SwitchControl Transformer Output 10.5V at