Preventive Maintenance Work Plan Chart Page 13
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35Preventive Maintenance Work Plan
Frequency Key
W – Weekly
M - Monthly Q - Quarterly
SA- Semi-Annually A- Annually SST - Seasonal Start-Up SSH - Season Shut Down
Split System Air Conditioners
Critical Tasks
Frequency Status
Date Completed Initials
Inspect all wiring for deterioration and tighten electrical contacts. Check for corrosion and
M
cleanliness.
Observe unit in operation, note any unusual noise or vibration.
M
Observe unit in operation, note any unusual noise or vibration.
M
Inspect and clean condenser coils. Remove accumulated dirt and debris.
M
Check operation of head pressure controls
M
Lubricate motor and fan bearings
M
Observe unit in operation, note any unusual noise or vibration.
M
Inspect and replace filters if necessary. Write installation date on the filter.
M
Lubricate fan and motor bearings.
M
Other recommended tasks
Check control sequencing
A
Inspect mounting bolts and tighten if needed.
A
Verify unit is properly grounded.
A
Verify proper operation of crankcase heater (if applicable).
A
Check for refrigerant leaks and repair as necessary.
A
Check refrigerant levels and recharge if needed.
A
Check for oil leaks and repair as necessary.
A
Check compressor oil level (excludes hermetically sealed units), if unit is equipped with a sight
A
glass.
Run machine, check action of controls, relays, switches and safeties or limit switches.
A
Verify unit operates at the proper suction and discharge pressures. Measure and record each.
A
Verify unit operates at proper discharge temperature. Measure and record temperature
A
difference across the coil.
Air Cooled Condenser
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