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9
MAINTENANCE SCHEDULE
Maintenance Check List Item
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Req
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I. Unit
•
Operational Log
O
•
Analyze Operational Log
O
•
Refrigerant Leak Test Chiller
O
•
Test Relief Valves or Replace
X
II. Compressor
•
Vibration Test Compressor
X
A. Motor
•
Meg. Windings (Note 1)
X
•
Ampere Balance (within 10% at RLA)
O
•
Terminal Check (Infrared temperature measurement)
X
•
Motor Cooling Filter Drier Pressure Drop
X
B. Lubrication System
•
Clean Oil Cooler Strainer (water)
X
•
Oil Cooler Solenoid Operation
O
•
Oil Appearance (clear color, quantity)
O
•
Oil Filter Pressure Drop
O
•
Oil Analysis (Note 5)
X
•
Oil change if indicated by oil analysis
X
III. Controls
A. Operating Controls
•
Calibrate Temperature Transducers
X
•
Calibrate Pressure Transducers
X
•
Check Vane Control Setting and Operation
X
•
Verify Motor Load Limit Control
X
•
Verify Load Balance Operation
X
•
Check Oil Pump Contactor
X
B. Protective Controls
Test Operation of:
•
Alarm Relay
X
•
Pump Interlocks
X
•
Guardistor and Surgeguard Operation
X
•
High and Low Pressure Cutouts
X
•
Oil Pump Pressure Differential Cutout
X
•
Oil Pump Time Delay
X
IV. Condenser
A. Evaluation of Temp Approach (NOTE 2)
O
B. Test Water Quality
V
C. Clean Condenser Tubes (NOTE 2)
X
X
D. Eddy current Test - Tube Wall Thickness
V
E. Seasonal Protection
X
V. Evaporator
A. Evaluation of Temp Approach (NOTE 2)
O
B. Test Water Quality
V
C. Clean Evaporator Tubes (NOTE 3)
X
D. Eddy current Test - Tube Wall thickness
V
X
E. Seasonal Protection
X
