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Hoshizaki DCM 300BAH(-OS) service manual B. Wiring Diagrams, DCM-300BAH

Models: DCM 300BAH(-OS)

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B. Wiring Diagrams

B. Wiring Diagrams

1. DCM-300BAH

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* High-Pressure Switch

Cut-out	412±210 PSIG
Cut-in	327±21 PSIG

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Hoshizaki DCM 300BAH(-OS) service manual B. Wiring Diagrams, DCM-300BAH

Contents

HoshizakiHoshizaki America, Inc 618 Highway 74 South Peachtree City, GA Complete and detailed explanation of the problemPhone 1-800-233-1940 770 Fax Attn Hoshizaki Technical Support DepartmentCONTENTS E. Float Switch Check and Cleaning IV. Service DiagnosisB. Diagnostic Procedure 1. Float Switch Checkserious injury Important Safety InformationIndicates a hazardous situation which could result in death or Indicates a situation which could result in damage to theDo not place objects on top of the icemaker I. Specifications A. Icemaker 1. DCM-300BAH-OSII. General Information A. Construction 1. Icemaker2. Icemaking Unit a Fill Cycle B. Sequence of Operation1. Sequence Cycles and Shutdown b Ice Purge CycleDCM-PB and DCM-OS Control Board Sequence Flow Chart DCM-300BAH-OS Sequence Flow ChartC. Control Board a DCM-300BAH DCM-PB Push Button Model Control Board1. Control Board Layout Control BoardControl Board DCM-OS Opti-Serve Model Control Boardb DCM-300BAH-OS Part Number 2A2649-01D. Power Switch, Control Switch, and Dispense Mode Switch 1. Power Switch2. LED Lights and Components a ICE 2. Control Switch3. Dispense Mode Switch b DRAINReservoir Overflow Fan Motor Condenser Access Valve III. Technical Information A. Water Circuit and Refrigeration CircuitInlet Water Valve Water Supply Float Switch Water Level Evaporator Gear Motor High-Pressure SwitchB. Wiring Diagrams 1. DCM-300BAHCut-out 2. DCM-300BAH-OSHigh-Pressure Switch 412± 21 0 PSIGC. Performance Data 1. DCM-300BAH-OSIV. Service Diagnosis B. Diagnostic ProcedureA. Ice Production Check Page Page check DV solenoid continuity Page C. Control Board Check 4 5VDC Output ChecksIce Dispense Controls b Opti-Serve Model - ICE and AM LEDs are on Water Dispense Switch/Water Dispense Sensor Page D. Bin Control Check E. Float Switch Check and Cleaning 1. Float Switch Check2. Float Switch Cleaning F. Diagnostic Charts 1. No Ice ProductionFreeze Cycle Ice Purge CycleShutdown RefillIce Dispense Opti-Serve 2. Ice/Water DispenseIce Dispense Push Button Water Dispense Push Button3b. Ice Dispense Portion 3. Opti-Serve OS Sensors3a. Ice Dispense Continuous 3c. Water DispenseV. Removal and Replacement of Components A. Service for Refrigerant Lines1. Refrigerant Recovery 2. Brazing3. Evacuation and Recharge R-404A B. Important Notes for Component Replacement Evaporator Assembly 2. Removal and Replacement of Extruding Head 1. Upper Bearing Wear Check3. Removal and Replacement of Auger 4. Removal and Replacement of Evaporator7 Remove the evaporator bracket and disconnect the water hoses 4 Recover the refrigerant and store it in an approved container3 Remove the apron panel, then remove the left side panel 8 Disconnect the inlet and outlet tubing5. Removal and Replacement of Mechanical Seal and Lower Housing 5b. Lower Housing5a. Mechanical Seal 6. Removal and Replacement of Gear Motor 7. Dispense Auger and Agitator 8. Dispense or Agitating MotorVI. Cleaning and Maintenance b Cleaning Procedure A. Cleaning and Sanitizing Instructionsa Cleaning Solution 1. Water Systemc Sanitizing Solution d Sanitizing Procedure - Following Cleaning Procedure2. Dispense Components b Sanitizing Solutionc Cleaning and Sanitizing Procedure a Cleaning SolutionWater Dispense Nozzle Ice Dispense Spout Spout Cover Frequency B. MaintenanceMaintenance Schedule AreaC. Preparing the Icemaker for Periods of Non-Use VII. Disposal