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Appendix D: CenTraVac™ Chiller Annual Inspection List
Follow the annual maintenance instructions provided in the
text of this manual, including but not limited to:
1. Compressor/Motor
☐ Motor continuity.
☐ Motor meg test.
☐ Check motor terminals.
☐ Inspect motor terminal board.
☐ Check inlet guide vanes (IGV) for abnormalities.
2. Starter or Adaptive Frequency™ Drive
☐ Inspect starter contacts.
☐ Check all connections per manufacturer
specifications.
☐ Follow all manufacturer recommendations for
starter or Adaptive Frequency™ Drive (AFD)
maintenance.
☐ Inspect/clean/service the AFD cooling system
(water- or air-cooled AFD).
☐ Record all applicable starter or starter component
settings.
3. Oil System
☐ Annual oil analysis (follow recommendations).
☐ Clean and lubricate oil system as required.
☐ Electrical inspection.
☐ Pump motor continuity check.
☐ Run oil pump and check differential oil pressure.
4. Condenser
☐ Inspect for fouling and scaling in tubes.
☐ Check operation of condenser water flow sensing
device.
☐ Factory recommendation to eddy current test tubes
every three years.
5. Evaporator
☐ Inspect for fouling and scaling in tubes.
☐ Check operation of evaporator water flow sensing
device.
☐ Factory recommendation to eddy current test tubes
every three years.
6. Control Circuits
120
☐ Verify control parameters.
☐ Test appropriate sensors for accuracy.
☐ Ensure sensors are properly seated in wells with
thermopaste installed.
☐ Check evaporator leaving water temperature low
temperature cutout setpoint.
☐ Condenser high pressure switch check-out.
☐ Check adjustment and operation of the inlet guide
vane actuator.
7. Leak Test Chiller
☐ Check purge times and unit performance logs. If
warranted, pressure leak test.
☐ Review oil analysis. If required, submit refrigerant
sample for analysis.
☐ Inspect unit for any signs of refrigerant or oil
leakage.
☐ Check unit for any loose screws on flange, volutes,
or casing.
8. Purge Unit
☐ Review the purge the purge sections of this manual
and follow maintenance and/or inspection items
identified.
☐ Review purge pump-out data.
☐ Review overall operation of purge and service as
necessary.
9. Exterior
☐ Inlet guide vane linkage.
☐ Clean and touch-up painted surfaces as needed.
☐ Repair deteriorated, torn, or missing insulation.
10. Optional Accessories
☐ If applicable, lubricate factory-installed gantries.
☐ After the first month of operation, inspect Heresite®
or Belzona® coated waterboxes; thereafter, inspect
as needed.
☐ Inspect anodes.
☐ Inspect and lubricate hinged waterboxes.
☐ With water flow sensing option, bleed tubing from
waterboxes to transformers.
CDHH-SVX003C-EN
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