Daikin Pathfinder AWV Installation, Operation And Maintenance Manual page 95

Table 65: Preventative Maintenance Schedule
General
Complete unit log and review (Note 3)
Inspect unit for loose or damaged components and visible leaks
Inspect thermal insulation for integrity
Clean and paint as required
Electrical ( * including the VFDs)
Sequence test controls *
Check contactors for pitting, replace as required *
Check terminals for tightness, tighten as necessary *
Verify solenoid plug(s) tightness and gasket integrity
Clean control panel interior *
Clean control box fan filter * (Note 7 )
Visually inspect components for signs of overheating *
Verify compressor and oil heater operation
Refrigeration/Lubricant
Leak test
Check liquid line sight glasses for clear flow
Check compressor oil sight glass for correct level (lubricant charge)
Check filter-drier pressure drop (Note 6)
Perform compressor vibration test (optional)
Perform oil analysis test on compressor oil
Condenser (air-cooled)
Rinse condenser coils (Note 4)
Clean epoxy coated condenser coils (Note 4)
Check fan blades for tightness on shaft (Note 5)
Check fans for loose rivets and cracks, check motor brackets
Check coil fins for damage and straighten as necessary
For IWSE coils, torque all hose clamp connections to a minimum of 7
ft-lbs (84 in-lbs)
NOTE: 1 Monthly operations include all weekly operations.
2 Annual (or spring startup) operations include all weekly, monthly, and quarterly operations.
3 Log readings can be taken daily for a higher level of unit observation.
4 Coil rinsing and 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.
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Operation Weekly
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95 IOM 1242-8 • PATHFINDER
System Maintenance
Monthly Annual
Quarterly
(Note 1) (Note 2)
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MODEL AWV CHILLERS
®
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