Hoshizaki 73180 service manual

Page 45

19)Replace the tap-line valve with a proper, permanent access valve.

20)Remove the drier, then place the new drier in position.

21)Braze all fittings while purging with nitrogen gas flowing at a pressure of 3 to 4 PSIG.

22)Use an electronic leak detector or soap bubbles to check for leaks. Add a trace of refrigerant to the system (if using an electronic leak detector), and then raise the pressure using nitrogen gas (140 PSIG). DO NOT use R-134a as a mixture with pressurized air for leak testing.

23)Evacuate the system, then charge it with refrigerant. See the nameplate for the required refrigerant charge.

24)Reattach and secure the reservoir hose, drain hose, and drain plug.

25)Install the auger assembly with the upper part of the mechanical seal attached. Replace the cutter, extruding head, and evaporator flange in their correct positions.

26)Open the water supply line shut-off valve and check for water leaks.

27)Plug the unit into the electrical outlet, then move the power switch to the "ON" position.

28)Allow the icemaker to operate until the gear motor starts. Check for water leaks.

29)Move the power switch to the "OFF" position, then unplug the unit from the electrical outlet.

30)Replace the removed parts and panels in the reverse order of which they were removed.

31)Plug the unit into the electrical outlet, then move the power switch to the "ON" position to start the automatic icemaking process.

5.Removal and Replacement of Mechanical Seal and Lower Housing 5a. Mechanical Seal

1)Move the power switch to the "OFF" position, then unplug the unit from the electrical outlet.

2)Close the water supply line shut-off valve.

3)Remove all ice from the storage bin.

4)While maintaining a hold on the door, remove the hinge stop pin from hinge (B). Pull out the bottom of the door slightly, then gently remove the door from hinge (A). See Fig. 10.

5)Remove the top panel.

6)Remove the spout.

7)Remove the upper rear panel. See Fig. 12.

8)Remove the clamp securing the drain plug, then lower the drain hose into a container. Remove the drain plug to drain the water from the reservoir and evaporator assembly.

9)After all of the water has drained, replace the drain hose, drain plug, and drain clamp in their original positions.

10)Remove the packing.

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Contents 100BAF-DS 100BAF-AD 100BAF-ADDS Hoshizaki AMERICA, INC Contents Page Important Safety Information Page Auxiliary Codes A-1 and Earlier Specifications 100BAFAuxiliary Codes A-2 and Later 100BAF-DS 100BAF-DS, 2. Auxiliary Codes A-2 and Later 100BAF-AD 100BAF-AD, 2. Auxiliary Codes A-2 and Later 100BAF-ADDS 100BAF-ADDS, 2. Auxiliary Codes A-2 and Later Front II. General Information ConstructionAuxiliary Codes Rear Auxiliary CodesIcemaking Unit Freeze Cycle Sequence of OperationFill Cycle Auxiliary Codes A-1 and Earlier Auxiliary Codes A-2 and Later Auxiliary Codes A-2 and Later Wiring DiagramIcemaker with Optional Drain Pump HS-0248 100BAF Series Performance DataIV. Service Diagnosis Diagnostic ProcedureIce Production Check Page Auxiliary Codes A-2 and Later Bin Control Check Float Switch Check Lower Float white Plastic Retainer Clip Float Switch CleaningOptional Drain Pump HS-0248 OverviewDrain Pump Check Priming Instructions Float Switch Cleaning No Ice Production Possible Cause Startup Diagnostic ChartsShutdown Fill Cycle and Refill Cycle Shutdown Removal and Replacement of Components Service for Refrigerant LinesRefrigerant Recovery Evacuation and Recharge R-134a BrazingComponent Important Notes for Component ReplacementRemoval and Replacement of Evaporator Assembly Components Upper Bearing Wear Check Removal and Replacement of Extruding Head Removal and Replacement of Auger Removal and Replacement of Evaporator Page 5b. Lower Housing Page VI. Maintenance Frequency Area Task Maintenance ScheduleCleaning Solution Cleaning and Sanitizing InstructionsPage Sanitizing Solution Page Cleaning Solution Page Sanitizing Solution Storage Bin Drain Condenser Auxiliary Codes A-1 and Earlier Skip to step VII. Preparing the Icemaker for Periods of Non-UseVIII. Disposal
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