Hoshizaki JWE-620UA-6B service manual Cleaning and Maintenance Instructions Daily Maintenance

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V. Cleaning and Maintenance Instructions

A. Daily Maintenance

IMPORTANT

Be sure to clean the dishwasher after closing time every day. It is difficult to remove heavy soils left overnight. In high temperature conditions, food scraps will rot and affect sanitary operation.

1) Take out scraps from the removed tank filters, and wash them clean with a scourer.

IMPORTANT

To prevent damage, do not hit the filters on the sink to drop scraps or to drain the filters.

2)Turn and loosen the upper spray arm nut in the direction of the arrow. Support the upper rinse spray arm, and remove it together with the upper wash spray arm.

Upper Wash Spray Arm

Spray Arm Nut

Upper Rinse Spray Arm

3)Turn and loosen the lower spray arm nut in the direction of the arrow. Lift off the lower rinse spray arm, and remove the lower wash spray arm.

4)If the wash spray arm and rinse spray arm nozzles are clogged, use a wire or brush to unclog and wash them clean.

5)Clean the wash compartment by lifting off the separator toward you. Remove any scraps from inside the wash compartment and wash tank. Use a scourer to wash off heavy soils.

Spray Arm Nut

Wire

Separator

IMPORTANT

To prevent damage, do not hit the separator on the sink to drop scraps or to drain the separator.

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Contents Model JWE-620UA-6B Hoshizaki AMERICA, INC Contents Page Important Safety Information Specifications Specification Sheet DisplayNameplate Rating Dimensions/Connections II. General Information A. Construction DishwasherInternal Booster Tank Control Box Auxiliary Code U-1, U-2, U-3, V-0, A-0Auxiliary Code A-1 and Later Auto Fill lamp flashing and RINSE, STANDARD, or Long lamp on Sequence of OperationAuto Fill Cycle Wash Cycle STANDBY/CLEANING Button Start Rinse CycleRinse lamp flashing DrainSequence of Operation Flow Chart Auxiliary Code A-1 and Later Control Board and Operation Board Control Board LocationControl Board Layout CN5Control Board Diagram CN9X10 Error Codes Mode LampsReady Lamp Auto Fill LampMode Button STANDBY/CLEANING ButtonService Menu Access Standby LampService Menu Chart Auxiliary Code U-1, U-2, U-3, V-0, A-0 DefaultService Menu Chart Auxiliary Code A-1 and Later Temperature Display Error Codes Internal Booster Tank Energy Saving ModeBuzzer Special ModesAlert Function Auxiliary Code A-1 and Later Continuous Wash ModeConsecutive Rinse Mode OFF Switch Open/Closed Display Mode III. Service DiagnosisDiagnostic Procedure Page Error Codes Error Code TableError Code Log Error Code Details Auto Fill Error A1Internal Booster Tank Auto Fill Error A2 Wash Tank Water Level Error A3 Defective Replace Control Board Repair or replace Replace Wash Tank Thermistor Error H1, H2 Internal Booster Tank Thermistor Error H3, H4 ROM/RAM Error H5 Eeprom Error H6Phase Reversal Error H7 Service Flow Charts Unit Will Not StartPage Dishes Not Clean Page Inadequate Rinse Dishwasher Will Not Start When Door Closed No or Inadequate Detergent/Rinse Aid Supply Wash Tank Water BoilsWash Tank Water Not Draining Float Switch Cleaning Float Switch Check and CleaningFloat Switch Check Thermistor Check Removal of Panels IV. Removal and Replacement of ComponentsAccessing the Control Box Page Removal and Replacement of Internal Booster Tank Removal and Replacement of Wash Pump Motor Removal and Replacement of Rinse Pump Motor Removal and Replacement of Handle Removal and Replacement of Door Removal and Replacement of Spring Unit Removal and Replacement of SpringAdjustment of Door Opening/Closing Force Removal and Replacement of Flush Pipe Packing Installation Instructions Removal and Replacement of Thermistor Operation Board Removal and Replacement of Control Board or Operation BoardControl Board Page Cleaning and Maintenance Instructions Daily Maintenance Pump Filter Water Level Sensor Location Front Self-Cleaning Weekly Maintenance Monthly InspectionDescaling As Required Shutdown Long Storage, Relocation, Disposal, Transfer VI. Operating Instructions VII. Technical Information Water Circuit Wiring Diagram Auxiliary Code U-1, U-2, U-3, V-0, A-0Auxiliary Code A-1 and Later