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Hoshizaki KM-320MAH, KM-320MWH service manual C. Timing Chart

Models: KM-320MWH KM-320MAH

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C. Timing Chart

C. Timing Chart

*1 The icemaker does not complete a defrost cycle in the first 2 or 3 minutes. See "II.B.4. Controls and Adjustments."

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Hoshizaki KM-320MAH, KM-320MWH service manual C. Timing Chart

Contents

Number Issued Revised “A Superior Degree of Reliability”Modular Crescent Cuber Models KM-320MAH KM-320MWH HoshizakiHoshizaki America, IncPage CONTENTS K. Removal and Replacement of Pump Motor L. Removal and Replacement of Spray TubesVI. Cleaning and Maintenance Instructions B. Cleaning and Sanitizing InstructionsI. Specifications A. KM-320MAH air-cooled B. KM-320MWH water-cooled II. General Information A.Construction 1.KM-320MAH air-cooled2. KM-320MWH water-cooled Features of Control Products E Controller Board b Defrost TimerB. Controller Board 1.Solid-StateControlc High Temperature Safety - 127 ± 7F 53 ± 4C d Low Water Safetyf LED Lights and Audible Alarm Safeties e High Voltage Cut-outfactory setting Type of AlarmCheck for defrost problem stuck HGV temperature 127FControl Products HOS-001ABoard 3.Sequence 1st Cycle Water ValveWater Valve Hot Gas Valve2nd Cycle and after with pump drain Drain Pump Hot Gas Valve Defrost Cycle FreezeCycle Pump, Fan & Line Valve 2nd Cycle and after with no pump drain Water Valve Hot Gas Valve Defrost Cycle FreezeCycle Pump, Fan & Line Valve 4. Controls and Adjustments bDefrost Timer a Defrost Controlc Drain Timer d Drain Countere Freeze Timer f Bin Control5. Checking the Controller Board 3Reconnect the float switch connector to the controller board. After the first 5 minutes of the freeze cycle, disconnect the float switch leads from the controller board. At this point, the unit should start the defrost cycle III. Technical Information A. Water Circuit and Refrigerant Circuit1. KM-320MAH 2. KM-320MWH B. Wiring Diagram 1. KM-320MAH, KM-320MWHC. Timing Chart Page D. Performance Data 1. KM-320MAH2. KM-320MWH APPROXIMATE ICEIV. Service Diagnosis A. No Ice Production ProblemPossible Cause RemedyProblem Possible CauseRemedy j Water Supply LineProblem Possible CauseRemedy c Overload ProtectorB. Evaporator is Frozen Up ProblemProblem Possible CauseProblem Possible CauseRemedy c Controller BoardC. Low Ice Production D. Abnormal IceE. Other ProblemV. Removal and Replacement of Components A.Service for Refrigerant Lines1. Refrigerant Recovery 2.Evacuation and Recharge R-404AB.Brazing DANGER C. Removal and Replacement of Compressor D. Removal and Replacement of Drier E.Removal and Replacement of Expansion Valve7Install a new drier G.Removal and Replacement of Evaporator H. Removal and Replacement of Thermistor I. Removal and Replacement of Fan Motor J.Removal and Replacement of Water ValveK. Removal and Replacement of Pump Motor L.Removal and Replacement of Spray TubesWater‑Cooled Model Only Page VI. Cleaning and Maintenance Instructions A. Preparing the Icemaker for Long StoragePage B. Cleaning and Sanitizing Instructions 1.Cleaning Procedure 15Move the control switch to the ICE position C. Maintenance 1Stainless Steel Exterior2Storage Bin and Scoop 3Condenser except water-cooledmodel