Daikin AWV024 - Preventative Maintenance Schedule

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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 lter * (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 ow X
Check compressor oil sight glass for correct level (lubricant charge) X
Check lter-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 ns 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 lter if pressure drop exceeds 20 psi.
7 The weekly fan lter cleaning schedule can be modied to meet job conditions. It is important that the lter allows full
air ow.