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Hoshizaki DCM-500BWH-OS service manual C. Sequence of Electrical Circuit - Ice Making, Fill Cycle

Models: DCM-500BWH-OS

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C. Sequence of Electrical Circuit – Ice Making

C. Sequence of Electrical Circuit – Ice Making

1. Fill Cycle

With the power switch in the "ON" position and the control switch in the "ICE" position, the inlet water valve energizes and the reservoir fills with water until the upper float switch closes.

DCM-500BAH

DCM-500BWH

(Control Board)

DCM-500BAH-OS

DCM-500BWH-OS

(Control Board)

WIRE COLOR CODE

BK	BLACK
BR	BROWN
BU	BLUE
DBU	DARK BLUE
GY	GRAY
LBU	LIGHT BLUE

O	ORANGE		W/BK	WHITE/BLACK
P	PINK		W/BR	WHITE/BROWN
R	RED		W/BU	WHITE/BLUE
V	VIOLET		W/O	WHITE/ORANGE
W	WHITE		W/R	WHITE/RED

YYELLOW

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Hoshizaki DCM-500BWH-OS service manual C. Sequence of Electrical Circuit - Ice Making, Fill Cycle

Contents

HoshizakiHoshizaki America, Inc Cubelet Icemaker / Dispenser Models DCM-500BAH DCM-500BAH-OSComplete and detailed explanation of the problem Phone 1-800-233-1940 Technical Service 770 487-2331 FaxHOSHIZAKI AMERICA, INC 618 Highway 74 South Peachtree City, GA Attn Hoshizaki Technical Support DepartmentCONTENTS A. Diagnostic Procedure IV. Service DiagnosisC. Diagnostic Charts V. Removal and Replacement of Components1. DCM-500BAH I. Specifications A. IcemakerSHAPE OF ICE 2. DCM-500BAH-OS90/70F Spare Fuse3. DCM-500BWH 4. DCM-500BWH-OS 1. DCM-500BAH-OS II. General Information A. ConstructionEvaporator Assembly 2. DCM-500BWH-OSInlet Water Valve Float Switch Reservoir Control Box Power Switch Door Switch Gear Motor Control Switch Dispense Mode Switch1. DCM-500BAH-OS, DCM-500BWH-OS B. Ice Making Unit1. Fill Cycle C. Sequence of Operation2. Ice Purge Cycle 60 seconds 3. Freeze Cycle2. Shutdown & Restart 3. 12 Hour Drain Cycle Shutdown & Restart 1. StartupD. Control Board Control Board 1. Control Board Layout a DCM-500BAH, DCM-500BWHPart Number 2A1592-01 Control Board b DCM-500BAH-OS, DCM-500BWH-OSPart Number 2A2649-01 a LED Lights 2. Features4. Control Board Check Procedure 3. Controls and Adjustments a Portion Controla Power Supply b Ice Making Componentsc Dispensing Components DCM-500BAH, DCM-500BWH Red upper Black common Blue lower Magnet towards top Upper Float blue E. Float SwitchSpring Retainer Clip Magnet towards top Lower Float white Plastic Retainer ClipInlet Water Valve Water Supply Float Switch Water Level Reservoir III. Technical Information A. Water Circuit and Refrigeration CircuitEvaporator Overflow Gear Motor Fan Air-Cooled Condenser Access Valve Water Valve High Pressure Switch Compressor Access ValveWater-Cooled Condenser Water Supply Out Water Regulating Valve Access Float SwitchWater Valve High Pressure Switch Access Compressor Valve 2. DCM-500BWH-OS1. DCM-500BAH, DCM-500BWH B. Wiring DiagramsHigh Pressure Switch WIRE COLOR CODEHigh Pressure Switch 2. DCM-500BAH-OS, DCM-500BWH-OSWIRE COLOR CODE Air-Cooled Model1. Fill Cycle C. Sequence of Electrical Circuit - Ice MakingWIRE COLOR CODE 2. Ice Purge CycleDCM-500BAH DCM-500BWH3. Freeze Cycle WIRE COLOR CODECompressor and fan motor start 60 seconds after gear motor starts DCM-500BAH4. 12 Hour Drain Cycle / Drain Switch 5. Shutdown 6. Low Water Safety 7. High Pressure Switch 1. Continuous Dispense D. Sequence of Electrical Circuit - Dispensing2. Portion Dispense 1. DCM-500BAH-OS E. Performance Data1. The data without *marks should be used for reference only 1. The data without *marks should be used for reference only 2. DCM-500BWH-OSIV. Service Diagnosis A. Diagnostic Procedure B. Ice Production Check 1. No Ice Production C. Diagnostic ChartsPossible Cause ProblemRemedy Possible Cause ProblemRemedy Problem 2. Low Ice ProductionProblem Possible CauseProblem 3. OtherPossible Cause RemedyProblem 4. DispensingPossible Cause Remedy5. Opti Serve OS Sensors 5b. Ice Dispensing Portion Mode 5a. Ice Dispensing Continuous Mode5c. Water Dispensing K5 Pin 3 W/BKA. Service for Refrigerant Lines V. Removal and Replacement of Components1. Refrigerant Recovery 2. Brazing3. Evacuation and Recharge R-404A B. Removal and Replacement of Compressor C. Removal and Replacement of Expansion Valve D. Removal and Replacement of Evaporator Assembly Components 1. Upper Bearing Wear Check 2. Removal and Replacement of Extruding Head4. Removal and Replacement of Evaporator 3. Removal and Replacement of Auger3 Remove the apron panel, then remove the left side panel 4 Recover the refrigerant and store it in an approved container8 Remove the evaporator bracket and disconnect the water hoses 9 Disconnect the inlet and outlet tubing5b. Lower Housing Gear Motor Cover Screws Gear Motor Cover Gear Motor 6. Removal and Replacement of Gear MotorGear Motor/Drain Pan Bolts and Washers Gear Motor Bracket Gear Motor Bracket Bolts Drain Pan Drain Pan Bracket Bolts Drain Pan BracketE. Removal and Replacement of Self-Contained Air-Cooled Condenser F. Removal and Replacement of Water-Cooled Condenser Water‑Cooled Model Only G. Removal and Replacement of Water Regulating Valve ‑I. Removal and Replacement of Fan Motor H. Adjustment of Water Regulating Valve - Water-Cooled Model OnlyK. Removal and Replacement of Drain Valve J. Removal and Replacement of Inlet or Dispensing Water Valve1. Dispensing Auger and Agitator L. Removal and Replacement of Dispensing System2. Dispensing or Agitating Motor Agitator Agitating Motor Dispensing Motor Dispensing Auger 6 Install the new motorA. Cleaning and Sanitizing Instructions VI. Cleaning and Maintenanceb Cleaning Procedure a Cleaning Solution1. Water System d Sanitizing Procedure - Following Cleaning Procedure c Sanitizing Solutionb Sanitizing Solution c Cleaning and Sanitizing Procedure3 Remove the front cover of the storage bin B. Maintenance C. Preparing the Icemaker for Long Storage 5 Close the condenser water supply line drain valve