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www.DaikinApplied.com 89
IOM 1242-2 • PATHFINDER
®
MODEL AWV CHILLERS
Figure 78: Preventative Maintenance Schedule
Operation
Weekly
Monthly
(Note 1)
Annual
(Note 2)
General
Complete unit log and review (Note 3)
X
Inspect unit for loose or damaged components and visible leaks
X
Inspect thermal insulation for integrity
X
Clean and paint as required
X
Electrical ( * including the VFDs)
Sequence test controls *
X
Check contactors for pitting, replace as required *
X
Check terminals for tightness, tighten as necessary *
X
Clean control panel interior *
X
Clean control box fan filter * (Note 7 )
X
Visually inspect components for signs of overheating *
X
Verify compressor and oil heater operation
X
Megger compressor motor
X
Refrigeration/Lubricant
Leak test
X
Check liquid line sight glasses for clear flow
X
Check compressor oil sight glass for correct level (lubricant charge)
X
Check filter-drier pressure drop (Note 6)
X
Perform compressor vibration test (optional)
X
Perform oil analysis test on compressor oil
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, check motor brackets
X
Check coil fins for damage and straighten as necessary
X
NOTE:
1 Monthly operations include all weekly operations.
2 Annual (or spring startup) operations include 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.
6 Replace the filter if pressure drop exceeds 20 psi.
7 The weekly fan filter cleaning schedule can be modified to meet job conditions. It is important that the filter allows full
air flow.
Summary of Contents for Pathfinder AWV Series
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