Hoshizaki 73202 Ice Maker User Manual


 
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IV. Removal and Replacement of Components
WARNING
• This icemaker should be diagnosed and repaired only by qualied service
personnel to reduce the risk of death, electric shock, serious injury, or re.
• Move the power switch to the "OFF" position and turn off the power supply to the
icemaker before servicing. Lockout/Tagout to prevent the power from being turned
back on inadvertently.
CHOKING HAZARD: Ensure all components, fasteners, and thumbscrews are
securely in place after the equipment is serviced. Make sure that none have fallen
into the storage bin.
• Make sure all food zones in the icemaker and storage bin are clean after
the icemaker is serviced. For cleaning procedures, see "VI. Cleaning and
Maintenance."
• When replacing evaporator assembly and water circuit components, make sure
there are no water leaks after the repair is complete.
A. Service for Refrigerant Lines
WARNING
• Repairs requiring the refrigeration circuit to be opened must be performed by
properly trained and EPA-certied service personnel.
• Always recover the refrigerant and store it in an approved container. Do not
discharge the refrigerant into the atmosphere.
• 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-404A as a mixture with
pressurized air for leak testing.
NOTICE
• Do not leave the system open for longer than 15 minutes when replacing or
servicing parts. The Polyol Ester (POE) oils used in R-404A units can absorb
moisture quickly. Therefore it is important to prevent moisture from entering the
system when replacing or servicing parts.
• Always install a new drier every time the sealed refrigeration system is opened.
• Do not replace the drier until after all other repair or replacement has been made.
Install the new drier with the arrow on the drier in the direction of the refrigerant
ow.
• When brazing, protect the drier by using a wet cloth to prevent the drier from
overheating. Do not allow the drier to exceed 250°F (121°C).