Maintenance Schedule - McQuay WSC Operating Manual

Maintenance Schedule

aintenance Check List Item
I. Unit
· Operational Log
· Analyze Operational Log
· Refrigerant Leak Test Chiller
· Test Relief Valves or Replace
II. Compressor
· Vibration Test Compressor
A. Motor
· Meg. Windings (Note 1)
· Ampere Balance (within 10% at RLA)
· Terminal Check (Infrared temperature measurement)
· Motor Cooling Filter Drier Pressure Drop
B. Lubrication System
· Clean Oil Cooler Strainer (water)
· Oil Cooler Solenoid Operation
· Oil Appearance (clear color, quantity)
- Oil Filter Pressure Drop
· Oil Analysis (Note 5)
· Oil change if indicated by oil analysis
III. Controls
A. Operating Controls
· Calibrate Temperature Transducers
· Calibrate Pressure Transducers
· Check Vane Control Setting and Operation
· Verify Motor Load Limit Control
· Verify Load Balance Operation
· Check Oil Pump Contactor
B. Protective Controls
· Test Operation of:
Alarm Relay
Pump Interlocks
Guardistor and Surgeguard Operation
High and Low Pressure Cutouts
Oil Pump Pressure Differential Cutout
Oil Pump Time Delay
Continued on next page.
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OM Centrif Micro ΙΙ-5