Hoshizaki FS-1022MLH-C service manual Important Notes for Component Replacement

Page 43

4)Close the low-side valve and high-side valve on the gauge manifold.

5)Disconnect the gauge manifold hose from the vacuum pump and attach it to a refrigerant service cylinder. Remember to loosen the connection and purge the air from the hose. See the rating label inside the icemaker for the required refrigerant charge. Hoshizaki recommends only virgin refrigerant or reclaimed refrigerant which meets ARI Standard 700 (latest edition) be used.

6)A liquid charge is required for charging an R-404A system (to prevent fractionation). Place the service cylinder on the scales: if the service cylinder is not equipped with a dip tube, invert the service cylinder, then place it on the scales. Open the high-side valve on the gauge manifold.

7)Allow the system to charge with liquid until the proper charge weight is met.

8)If necessary, add any remaining charge to the system through the low-side.

CAUTION! To prevent compressor damage, use a throttling valve or liquid dispensing device to add the remaining liquid charge through the low-side service valve with the unit running.

9)Close the high and low-side service valves. Close the high and low-side gauge manifold valves, then disconnect the gauge manifold hoses.

10)Cap the service valves to prevent a possible leak.

B.Important Notes for Component Replacement

CAUTION

When replacing a component listed below, see the notes to help ensure proper operation.

Component

Notes

 

 

Compressor

• Install a new drier, start capacitor, run capacitor, and start relay.

Expansion Valve

• Install a new drier.

 

• Attach the expansion valve bulb to the suction line in the same location as the previous

 

bulb.

 

• The bulb should be between the 10 and 2 o'clock positions on the tube.

 

• Secure the bulb with the clamp and holder, then insulate it.

 

 

Pump-Down

• Install a new strainer and drier.

Solenoid Valve

• Use copper tube of the same diameter and length when replacing valve lines.

 

 

 

Fan Motor

• Install a new fan motor capacitor.

 

 

 

Evaporator Assembly Components. See Fig. 7.

Upper and

• Inspect the upper bearing for wear. See "V.B.1. Upper Bearing Wear Check." Replace if

Lower Bearings

necessary.

 

• When replacing the upper bearing it is advised to also change the lower bearing at the

 

same time.

 

 

Evaporator

• Install a new drier.

 

• Inspect the mechanical seal and O-ring prior to installing the new evaporator. If worn,

 

cracked, or scratched, the mechanical seal should also be replaced.

 

 

Gear Motor

• Install a new gear motor capacitor.

43

Page 42 Page 44
Image 43
Page 42 Page 44
Contents SRC-10H Hoshizaki AMERICA, INC Contents Page Unit Important Safety InformationSerious injury Indicates important information about the use and careFor SRC FS-1022MLH-C Specifications IcemakerSRC-10H Condensing UnitIcemaker FS-1022MLH-C II. General Information ConstructionCondensing Unit a SRC-10H Icemaking Unit Sequence Cycles and Shutdown Sequence of OperationDrain Cycle Shutdown Cycle Sequence Flow Chart Control Board Sequence Flow Chart FS-1022MLH-C/SRC-10HControl Board Control Board Control Board LayoutEnergized Components Min Max LED Lights and Audible Alarm SafetiesNo. of Beeps Type of Alarm Reset Options Every 5 sec Sequence StepS1 Dip Switch Setting Infrared Sensor Shutdown Delay Controls and AdjustmentsSeconds 1.6 minutes Factory Default S1 Dip Switch Setting Dispense Time S1 Dip Switch Setting Drain Timer IntervalBin Control S1 Dip Switch MechanicalBackup Shutdown DelayIII Wiring Diagrams Safety Low-Pressure Switch Manual Reset Control Low-Pressure SwitchHigh-Pressure Switch FS-1022MLH-C with SRC-10H Performance DataDiagnostic Procedure IV. Service DiagnosisIce Production Check Page Page Page Control Board Check 5VDC Page Infrared Sensor Check Bin Control CheckMechanical Backup Bin Control Check Page Float Switch Check Float Switch Check and CleaningFloat Switch Cleaning Page No Ice Production Diagnostic ChartsNo Ice Production Possible Cause Startup No Ice Production Possible Cause Shutdown Service for Refrigerant Lines Removal and Replacement of ComponentsBrazing Refrigerant RecoveryEvacuation and Recharge R-404A Evaporator Assembly Components. See Fig Important Notes for Component ReplacementComponent Evaporator Assembly Upper Bearing Wear Check Removal and Replacement of CutterRemoval and Replacement of Auger Removal and Replacement of Extruding HeadRemoval and Replacement of Evaporator Page Removal and Replacement of Gear Motor 6b. Lower HousingPage Cleaning Procedure VI. Cleaning and MaintenanceCleaning and Sanitizing Instructions Cleaning SolutionFloat Switch Assembly Reservoir Cover Sanitizing Procedure Initial Sanitizing SolutionSanitizing Procedure Final Maintenance Frequency Area Task Maintenance ScheduleRemove the water from the icemaker water supply line Preparing the Icemaker for Long StorageDrain the evaporator
Top Page Image Contents