Maintenance Inspection Schedule (Rev. 04/03)
5
Refrigeration
•
Check refrigerant level and compressor oil condition.
•
Check suction pressure regulator regulating pressure on defrost or
heating cycle.
•
Replace dehydrator (every two years) and check discharge and
suction pressures.
Structural
•
Visually inspect unit for fluid leaks (coolant, oil, freon).
•
Visually inspect unit for damaged, loose or broken parts (includes air
ducts and bulkheads, if so equipped).
•
Inspect tapered roller bearing fanshaft and idler for leakage and
bearing wear (noisy).*
•
Clean entire unit including condenser and evaporator coils and
defrost drains.
•
Check all unit, fuel tank and electric motor mounting bolts, brackets,
lines, hoses, etc.
•
Check damper door adjustment and operation.
•
Inspect clutch.*
*With belt removed, spin bearings by hand. Listen for noise (bearings roll freely).
NOTE: Compressors are equipped with an oil filter. Every 2 years of operation or whenever there is a
major service procedure performed, both the compressor oil filter and filter-drier must be changed.
Fuel
Island
Pre-trip
Every
750
Hours
Annual/
3,000
Hours
Maintenance interval may be extended to 1000 hours when
equipped with bypass oil filter.
Inspect/Service These Items
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