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IOM 1264-1 • NAVIGATOR
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MODEL WWV CHILLERS
50 www.DaikinApplied.com
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Figure 29: 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
Megger compressor motor
X
Refrigeration/Lubricant
Leak test
X
Check liquid line sight glasses for clear flow
X
Check oil sight glass for correct level (lubricant charge)
X
Perform compressor vibration test (optional)
X
Perform oil analysis test on compressor oil
X
Evaporator and Condenser (water-cooled)
Confirm correct water flow and pressure drop
X
Confirm appropriate water treatment
X
Clean and Leak Test tubes
X
Clean Flow Sensor
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 Replace the filter if pressure drop exceeds 20 psi.
5 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 Navigator WWV
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