IV. Removal and Replacement of Components
WARNING
•The appliance should be diagnosed and repaired only by qualified service personnel to reduce the risk of death, electric shock, serious injury, or fire.
•Move the control switch and the power switch to the "OFF" position and turn off the power supply before servicing. Lockout/Tagout to prevent the power supply 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 appliance and storage bin are clean after the appliance is serviced.
•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
•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
•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 flow.
•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).
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