UnIT maInTenanCe
www.DaikinApplied.com 99 IOM 1206-7 • TRAILBLAZER
™
MODEL AGZ CHILLERS
Table 88: 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
Megger compressor motor (Note 4) X
Refrigeration
Leak test X
Check sight glasses for clear ow X
Check lter-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 5) X
Check fan blades for tightness on shaft (Note 6) X
Check fans for loose rivets and cracks X
Check coil ns 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. Never Megger motors while they are in a vacuum to
avoid damage to the motor.
5. Coil cleaning can be required more frequently in areas
with a high level of airborne particles.
6. Be sure fan motors are electrically locked out.
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