Maintenance Inspection Schedule
Weekly Monthly Semi
Annual
Annual Inspect/Service These Items
Electrical
• •
Check Compressor clutch operation
• •
Inspect D.C. fan motors
• •
Inspect wiring harness for damaged wires
or connectors
•
Clean and re lubricate power studs at
condenser
Refrigeration
• • •
Check refrigerant level
• •
Replace receiver drier
•
Check refrigeration lines for signs of
rubbing, damage, and oil leaks
•
Perform acid test on compressor oil
Structural
• • • •
Visually inspect unit for loose or broken
parts
• • • •
Clean defrost drains
• • • •
Inspect belts for proper tension
• • •
Clean entire condenser and evaporator
coils
• • •
Check all mounting bolts
Note: Use only PAG (Poly Alkylene Glycol) compressor oil in R-134a systems
Do not mix PAG compressor oil with other synthetic oils
Keep PAG oil in tightly sealed containers. If oil becomes contaminated with
moisture (colour will change to milky) or standard oils, dispose of properly – Do
Not Use
Note: When servicing a R-134a system, use only those service tools certified for
and dedicated to R-134a refrigerant and PAG compressor oils
` Residual or non HFC refrigerants or oils will contaminate the R-134a
System
Note: Recover all refrigerant and re cycle or dispose of properly
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