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Hoshizaki KM-1601SAH/3, KM-1601SRH/3, KM-1601SWH/3 2. KM-1601SWH/3 (water-cooled)

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2. KM-1601SWH/3 (water-cooled)

Water Supply

Cleaning Valve

Float Switch

Drain

Thermostatic Expansion Valves

Compressor

Hot Gas

Valve

Check

Valves

High-Pressure

Switch

Strainer

Drier

Condenser

Evaporator

Low-Side

Service

Valve

Discharge Line

Suction Line

Water Pump

Thermistor

Spray Tubes

Inlet Water Valve

Pump-Out

Water

Tank

High-Side

Service

Valve

Refrigeration Circuit

Water Circuit

Liquid Line

Valve

Spray Tubes

Water Supply

Drain

Water Regulating Valve

Heat Exchanger

Freeze/Harvest

Pump Timer

Pump-Out

Check Valve

Contents

Main Hoshizaki Hoshizaki America, Inc. Page CONTENTS Page Important Safety Information WARNING CAUTION IMPORTANT WARNING I. Specications A. Icemaker 1. KM-1601SAH (air-cooled) Note: We reserve the right to make changes in specications and design without prior 2. KM-1601SAH3 (air-cooled) Note: We reserve the right to make changes in specications and design without prior 3. KM-1601SWH (water-cooled) 4. KM-1601SWH3 (water-cooled) Note: We reserve the right to make changes in specications and design without prior Note: We reserve the right to make changes in specications and design without prior 6. KM-1601SRH with URC-21F (remote air-cooled) (auxiliary codes: some S-1; S-2 and Note: We reserve the right to make changes in specications and design without prior Note: We reserve the right to make changes in specications and design without prior Note: We reserve the right to make changes in specications and design without prior 9. KM-1601SRH3 with URC-21F (remote air-cooled) (auxiliary codes: some S-1; S-2 and Note: We reserve the right to make changes in specications and design without prior Note: We reserve the right to make changes in specications and design without prior B. Condenser Unit Page II. General Information A. Construction 1. KM-1601SAH/3 (air-cooled) 2. KM-1601SWH/3 (water-cooled) 3. KM-1601SRH/3 (remote air-cooled) B. Sequence of Operation Page Page Page 2. Sequence Flow Chart a) KM-1601SAH/3 "G" Control Board 4. Pump-Out Cycle Components Energized when the Control Switch is in the "WASH" Position 3. Ice Level Lowered "G" Control Board Sequence Flow Chart KM-1601SAH/3 Cycle Steps 2. Harvest Cycle 1. 1-Minute Fill Cycle "E" Control Board Sequence Flow Chart 4. Pump-Out Cycle and Restart Shutdown Components Energized when the Control Switch is in the "WASH" Position C. Control Board 1. Control Board Layout a) KM-1601SAH/3 "G" Control Board "G" Control Board Part Number 2A3792-01 "G" Control Board b) KM-1601SWH/3 and KM-1601SRH/3 "E" Control Board "E" Control Board Part Number 2A1410-01 (factory); 2A1410-02 (service) "E" Control Board Page Page 3. Controls and Adjustments S4 Dip Switch All Models S5 Dip Switch KM-1601SAH/3 "G" Control Board Page Page Page Page III. Technical Information A. Water Circuit and Refrigeration Circuit 1. KM-1601SAH/3 (air-cooled) 2. KM-1601SWH/3 (water-cooled) 3. KM-1601SRH/3 (remote air-cooled) B. Wiring Diagrams Page Page Page C. Performance Data 1. KM-1601SAH (air-cooled) 1. Pressure data is recorded at 5 minutes into freezing cycle. The data not in bold 2. We reserve the right to make changes in specications and design without prior 2. KM-1601SAH3 (air-cooled) 1. Pressure data is recorded at 5 minutes into freezing cycle. The data not in bold 2. We reserve the right to make changes in specications and design without prior 3. KM-1601SWH (water-cooled) 1. Pressure data is recorded at 5 minutes into freezing cycle. The data not in bold 2. We reserve the right to make changes in specications and design without prior 1. Pressure data is recorded at 5 minutes into freezing cycle. The data not in bold 2. We reserve the right to make changes in specications and design without prior 4. KM-1601SWH3 (water-cooled) 1. Pressure data is recorded at 5 minutes into freezing cycle. The data not in bold 2. We reserve the right to make changes in specications and design without prior 6. KM-1601SRH with URC-21F (remote air-cooled) (auxiliary codes: some S-1; S-2 and 1. Pressure data is recorded at 5 minutes into freezing cycle. The data not in bold 2. We reserve the right to make changes in specications and design without prior 1. Pressure data is recorded at 5 minutes into freezing cycle. The data not in bold 2. We reserve the right to make changes in specications and design without prior 1. Pressure data is recorded at 5 minutes into freezing cycle. The data not in bold 2. We reserve the right to make changes in specications and design without prior 9. KM-1601SRH3 with URC-21F (remote air-cooled) (auxiliary codes: some S-1; S-2 and 1. Pressure data is recorded at 5 minutes into freezing cycle. The data not in bold 2. We reserve the right to make changes in specications and design without prior 1. Pressure data is recorded at 5 minutes into freezing cycle. The data not in bold 2. We reserve the right to make changes in specications and design without prior IV. Service Diagnosis WARNING A. Diagnostic Procedure Page Page Page B. Control Board Check C. Bin Control Check D. Float Switch Check and Cleaning Fig. 1 Page E. Thermistor Check F. Adjustment of Water Regulating Valve (water-cooled model) G. Diagnostic Charts Page Page 3. Low Ice Production Page V. Replacement of Components WARNING A. Service for Refrigerant Lines WARNING Page Page B. Important Notes for Component Replacement When replacing a component listed below, see the notes to help ensure proper operation. VI. Cleaning and Maintenance WARNING A. Cleaning and Sanitizing Instructions WARNING Page Page B. Maintenance WARNING C. Preparing the Icemaker for Long Storage