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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 power switch to the "OFF" position then unplug the appliance from the
electrical outlet before servicing.
• Make sure all food zones in the appliance are clean after the appliance is serviced.
WARNING
• Repairs requiring the refrigeration circuit to be opened must be performed by
properly trained and EPA-certified 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-134a a mixture with
pressurized air for leak testing.
NOTICE
• Do not leave the system open for longer than 15-min. when replacing or
servicing parts. The Polyol Ester (POE) oils used in R-134a and R-404A
appliances 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 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).
IV. Replace of Components
A. Service for Refrigerant Lines
