Manuals / Hoshizaki / Kitchen Appliance / Ice Maker

Hoshizaki SRH/3 KM-1900SAH/3, SWH/3 I. Construction and Water/Refrigeration Circuit Diagram

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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I. Construction and Water/Refrigeration Circuit Diagram

I. Construction and Water/Refrigeration Circuit Diagram

A. KM Construction

1. Air-Cooled Models (SAH/3)

Spray Tubes

Inlet Water Valve

Evaporator Assembly

Cleaning Valve

Check Valve (water)

Water Pump

Float Switch

Compressor

Thermostatic

Bin Control

Low-Side Service Valve

High-Side Service Valve

Thermostatic Expansion Valves

Water Supply Inlet

Junction Box

Hot Gas Valve

		Check Valves
		(refrigeration)
		Condenser
		Control Box
		Fan Blade
		Fan Motor
	Drier	High-Pressure
	Drier	Switch
		Switch
	Liquid Line Valve
Control Switch	Transformer Box (3 phase model)
Control Switch

	Z Bracket Used for Hoshizaki B-1300,	Thermostatic Bin Control
	B-1500, and Non-Hoshizaki Ice Storage Bins
		Brackets and Bulb Holder

Model Shown: KM-1301SAH3

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Hoshizaki SRH/3 KM-1900SAH/3, KM-1301SAH/3 I. Construction and Water/Refrigeration Circuit Diagram, A. KM Construction

Contents

HoshizakiHoshizaki America, Inc SERVICE MANUALStackable Crescent Cuber Models Complete and detailed explanation of the problem Phone 1-800-233-1940 770 Fax 1-800-843-1056E-mail techsupport@hoshizaki.com HOSHIZAKI AMERICA, INC 618 Highway 74 South Peachtree City, GACONTENTS C. Settings and Adjustments 1. Default Dip Switch Settingsa E and G Control Board without Harvest Pump Timer Operation b G Control Board with Harvest Pump Timer Operation23. KM-1900SRH with URC-21F Important Safety Information Indicates a hazardous situation which could result in death orserious injury Indicates a situation which could result in damage to theWARNING, continued Additional Warning for Remote ModelsI. Construction and Water/Refrigeration Circuit Diagram A. KM Construction1. Air-Cooled Models SAH/3 Model Shown KM-1301SAH32. Water-Cooled Models SWH/3/-M Model Shown KM-1301SWH33. Remote Models SRH/3 Note KM-2500SRH3 Includes Headmaster C.P.R Model Shown KM-1301SRH3B. KMH Construction 1. Water-Cooled Models SWH/3Model Shown KMH-2000SWH3 Model Shown KMH-2000SWH3Model Shown KMH-2000SRH3 2. Remote Models SRH/3Model Shown KMH-2000SRH3 Diagram C. Water/Refrigeration Circuit1. Air-Cooled Models SAH/3 Water TankWater-Cooled Models SWH/3/-M Water TankWater Regulating Valve CondenserKM-2500SRH3 Condenser Unit with Headmaster3a. Remote Models SRH/3 Except Water TankWater TankFreeze Pump-OutA. Sequence of Operation Flow Chart II. Sequence of Operation and Service DiagnosisE and G Control Board without Harvest Pump Timer Operation Flow Chart Components Energized when the Control Switch is in the WASH PositionComponents Energized when the Control Switch is in the WASH Position G Control Board with Harvest Pump Timer Operation Flow Chart2. G Control Board with Harvest Pump Timer Operation 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 50 sec. before harvest terminates, PM energizes. See step 5b below d WRV Diagnosis Confirm WRV is not leaking byR 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 E. Float Switch Check and Cleaning 1. Float Switch Checkand Hose 2. Float Switch CleaningVent Flush Shaft Float Switch Housing Float Retainer Rod Rubber Boot F. Thermistor Check Thermistor LeadCable Tie Foam InsulationNo Ice Production - Possible Cause G. Diagnostic Tables1. No Ice Production 2. Freeze-Up No Ice Production - Possible CauseFreeze-Up - Possible Cause Harvest Cycle3. Low Ice Production Freeze-Up - Possible CauseFreeze Cycle Low Ice Production - Possible CauseLow Ice Production - Possible Cause Long Freeze CycleIII. Controls and Adjustments A. Control Board Layout E Control Board1. E Control Board E Control BoardG Control Board 2. G Control BoardG Control Board Part Number 2A3792-01B. LED Lights and Audible Alarm Safeties 1. E Control Board2. G Control Board a E and G Control Board without Harvest Pump Timer Operation C. Settings and Adjustments1. Default Dip Switch Settings b G Control Board with Harvest Pump Timer Operation c G Control Board S5 Dip SwitchS4 Dip Switch E and G Control Boards S5 Dip Switch3. Pump-Out Timer S4 dip switch 3 4. Pump-Out Frequency Control S4 dip switch 5 a Bin Control Selector E Control Board7. Freeze Timer S4 dip switch 9 b Harvest Pump Timer G Control Board6. Factory Use S4 dip switch 9. Refill Counter S5 dip switch 2 through 5 G Control Board D. Control Switch8. Float Switch Selector S5 dip switch 1 G Control Board 1. Refrigerant Recovery IV. Refrigeration Circuit and Component Service InformationA. Refrigeration Circuit Service Information 2. Brazing 3. Evacuation and Recharge R-404A4 Close the low-side valve and high-side valve on the gauge manifold B. Component Service Information ComponentC. Water Regulating Valve Adjustment water-cooled models V. Maintenance 2. Drain the water tank VI. Preparing the Icemaker for Periods of Non-Use1. Remove the water from the icemaker water supply line 6 Close the drain valves VII. Disposal 1. KM-1301SAH A. Specification and Performance DataVIII. Technical Information 2. KM-1301SAH3 3. KM-1301SWH 13181323 17404. KM-1301SWH3 5. KM-1301SRH with URC-14F 6. KM-1301SRH3 with URC-14F 7. KM-1400SWH-M 8. KM-1400SWH3-M 9. KM-1601SAH SPECIFICATION SHEETPERFORMANCE DATA SHEET 146210. KM-1601SAH3 SPECIFICATION SHEETPERFORMANCE DATA SHEET 1456PERFORMANCE DATA SHEET 11. KM-1601SWHSPECIFICATION SHEET 12. KM-1601SWH3 13. KM-1601SRH with URC-21F Auxiliary Codes R-0, R-1, and some S-1 SPECIFICATION SHEET PERFORMANCE DATA SHEET15. KM-1601SRH with URC-22F Auxiliary Codes S-2 and Later PERFORMANCE DATA SHEET 16. KM-1601SRH3 with URC-21F Auxiliary Codes R-0, R-1, and some S-1SPECIFICATION SHEET SPECIFICATION SHEET PERFORMANCE DATA SHEET18. KM-1601SRH3 with URC-22F Auxiliary Codes S-2 and Later SPECIFICATION SHEETPERFORMANCE DATA SHEET 153019. KM-1900SAH SPECIFICATION SHEETPERFORMANCE DATA SHEET 248020. KM-1900SAH3 SPECIFICATION SHEETPERFORMANCE DATA SHEET 185921. KM-1900SWH SPECIFICATION SHEETPERFORMANCE DATA SHEET 187622. KM-1900SWH3 SPECIFICATION SHEETPERFORMANCE DATA SHEET 181423. KM-1900SRH with URC-21F SPECIFICATION SHEETPERFORMANCE DATA SHEET 263024. KM-1900SRH with URC-22F SPECIFICATION SHEETPERFORMANCE DATA SHEET 185725. KM-1900SRH3 with URC-21F SPECIFICATION SHEETPERFORMANCE DATA SHEET 1965PERFORMANCE DATA SHEET 26. KM-1900SRH3 with URC-22FSPECIFICATION SHEET 27. KM-2100SWH3 SPECIFICATION SHEETPERFORMANCE DATA SHEET 209628. KM-2100SRH3 with URC-22F SPECIFICATION SHEETPERFORMANCE DATA SHEET 321029. KM-2500SWH3 SPECIFICATION SHEETPERFORMANCE DATA SHEET 240830. KM-2500SRH3 with URC-23F SPECIFICATION SHEETPERFORMANCE DATA SHEET 378031. KMH-2000SWH SPECIFICATION SHEETPERFORMANCE DATA SHEET 182132. KMH-2000SWH3 33. KMH-2000SRH with URC-22F SPECIFICATION SHEETPERFORMANCE DATA SHEET 1944PERFORMANCE DATA SHEET 34. KMH-2000SRH3 with URC-22FSPECIFICATION SHEET a KM-1601SWH, KM-1601SRH, KM-1900SH, KMH-2000SH B. Wiring Diagrams1. Diagrams without Harvest Pump Timer Relays E and G Control Boards KM-2500SH3, KMH-2000SH3 SwitchPressure-Highb KM-1601SWH3, KM-1601SRH3, KM-1900SH3, KM-2100SH3 384±222. Diagrams with Harvest Pump Timer Relays G Control Board a KM-1301SH Auxiliary Code T-0, U-0T-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 e KM-1400SWH-M High-Pressure SwitchControl Transformer Output 10.5V at Water-Cooled ModelHigh-Pressure Switch f KM-1400SWH3-MControl Transformer Output 10.5V at