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Hoshizaki DCM 300BAH(-OS) service manual II. General Information A. Construction, Icemaker

Models: DCM 300BAH(-OS)

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II. General Information

II. General Information

A. Construction

1. Icemaker

Thermostatic Expansion Valve

Spout A

	Spout B
Evaporator Assembly	Bin Control
	Bin Control
Inlet Water Valve	Proximity Switch
Inlet Water Valve
Float Switch
Reservoir
Control Box

Power Switch

Gear Motor

Bin Control Actuator

Storage Bin

Agitator

Ice Dispense

Auger

CONTROL	4A1038-014
CONTROL
ICE
OFF	DISPENSE MODE
	PORTION
DRAIN	CONTINUOUS
	CONTINUOUS

Agitating Motor

Dispense Motor

Compressor

Safety Switch

Air-Cooled Condenser

Spout Cover

Shutter Assembly

Dispense Water Valve

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Hoshizaki DCM 300BAH(-OS) service manual II. General Information A. Construction, Icemaker

Contents

HoshizakiHoshizaki America, Inc Complete and detailed explanation of the problem Phone 1-800-233-1940 770 Fax618 Highway 74 South Peachtree City, GA Attn Hoshizaki Technical Support DepartmentCONTENTS IV. Service Diagnosis B. Diagnostic ProcedureE. Float Switch Check and Cleaning 1. Float Switch CheckImportant Safety Information Indicates a hazardous situation which could result in death orserious injury 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 B. Sequence of Operation 1. Sequence Cycles and Shutdowna Fill Cycle b Ice Purge CycleDCM-PB and DCM-OS Control Board Sequence Flow Chart DCM-300BAH-OS Sequence Flow ChartC. Control Board DCM-PB Push Button Model Control Board 1. Control Board Layouta DCM-300BAH Control BoardDCM-OS Opti-Serve Model Control Board b DCM-300BAH-OSControl Board Part Number 2A2649-012. LED Lights and Components D. Power Switch, Control Switch, and Dispense Mode Switch1. Power Switch 2. Control Switch 3. Dispense Mode Switcha ICE b DRAINIII. Technical Information A. Water Circuit and Refrigeration Circuit Inlet Water Valve Water Supply Float SwitchReservoir Overflow Fan Motor Condenser Access Valve Water Level Evaporator Gear Motor High-Pressure SwitchB. Wiring Diagrams 1. DCM-300BAH2. DCM-300BAH-OS High-Pressure SwitchCut-out 412± 21 0 PSIGC. Performance Data 1. DCM-300BAH-OSA. Ice Production Check IV. Service DiagnosisB. Diagnostic Procedure 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 ProductionIce Purge Cycle ShutdownFreeze Cycle Refill2. Ice/Water Dispense Ice Dispense Push ButtonIce Dispense Opti-Serve Water Dispense Push Button3. Opti-Serve OS Sensors 3a. Ice Dispense Continuous3b. Ice Dispense Portion 3c. Water DispenseV. Removal and Replacement of Components A. Service for Refrigerant Lines3. Evacuation and Recharge R-404A 1. Refrigerant Recovery2. Brazing 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 Evaporator4 Recover the refrigerant and store it in an approved container 3 Remove the apron panel, then remove the left side panel7 Remove the evaporator bracket and disconnect the water hoses 8 Disconnect the inlet and outlet tubing5a. Mechanical Seal 5. Removal and Replacement of Mechanical Seal and Lower Housing5b. Lower Housing 6. Removal and Replacement of Gear Motor 7. Dispense Auger and Agitator 8. Dispense or Agitating MotorVI. Cleaning and Maintenance A. Cleaning and Sanitizing Instructions a Cleaning Solutionb Cleaning Procedure 1. Water Systemc Sanitizing Solution d Sanitizing Procedure - Following Cleaning Procedureb Sanitizing Solution c Cleaning and Sanitizing Procedure2. Dispense Components a Cleaning SolutionWater Dispense Nozzle Ice Dispense Spout Spout Cover B. Maintenance Maintenance ScheduleFrequency AreaC. Preparing the Icemaker for Periods of Non-Use VII. Disposal