Unit Maintenance
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IOM 1207-6 • TRAILBLAZER
®
MODEL AGZ CHILLERS
Table 89: Planned Maintenance Schedule
Operation
Weekly
Monthly
(Note 1)
Annual
(Note 2)
General
Complete unit log and review (Note 3)
X
Visually inspect unit for loose or damaged components
X
Inspect thermal insulation for integrity
X
Clean and paint as required
X
Electrical
Check terminals for tightness, tighten as necessary
X
Clean control panel interior
X
Visually inspect components for signs of overheating
X
Verify compressor heater operation
X
Test and calibrate equipment protection and operating controls
X
Verify Solenoid Plug(s) Tightness and Gasket Integrity
X
Refrigeration
Leak test
X
Check sight glasses for clear flow
X
Check filter-drier pressure drop (see manual for spec)
X
Perform compressor vibration test
X
Acid test oil sample
X
Condenser (air-cooled)
Clean condenser coils (Note 4)
X
Check fan blades for tightness on shaft (Note 5)
X
Check fans for loose rivets and cracks
X
Check coil fins for damage
X
Notes:
1. Monthly operations include all weekly operations.
2. Annual (or spring start-up) operations includes all weekly
and monthly operations.
3. Log readings can be taken daily for a higher level of unit
observation.
4. Coil cleaning can be required more frequently in areas
with a high level of airborne particles.
5. Be sure fan motors are electrically locked out.
