Specifications

42 Centrifugal Chillers IMM WMC-2
Maintenance Schedule
I. Compressor
A. Performance Evaluation (Log & Analysis) * O
B. Motor
• Ampere Balance (within 10%)
X
• Terminal Check (tight connections, porcelain clean)
X
• Motor Cooling (check temperature)
X
C. Vane Operation
• Compressor Loads:
Operate Manual Switch X
Record Motor Amps X
• Compressor Unloads:
Operate manual Switch X
Record Motor Amps X
• Vanes Will Hold (place manual switch in "hold")
Observe Water Temp and Record Amps X
D. Internal Compressor Check X
II. Controls
A. Operating Controls
• Check Settings and Operation
X
• Check Vane Control Setting and Operation
X
• Verify Motor Load Limit Control
X
• Verify Load Balance Operation
X
B. Protective Controls
• Test Operation of:
Alarm Relay X
Pump Interlocks X
III. Condenser
A. Performance Evaluation O
B. Test Water Quality X
C. Clean Condenser Tubes X
D. Eddy current Test - Tube Wall Thickness X
E. Seasonal Protection X
IV. Evaporator
A. Performance Evaluation (Log Conditions And Analysis) O
B. Test Water Quality X
C. Clean Evaporator Tubes (as required) X
D. Eddy current Test - Tube Wall thickness (as required) X
E. Seasonal Protection X
V. Expansion Valve
A. Performance Evaluation (Superheat Control) X
VI. Compressor - Chiller Unit
A. Performance Evaluation O
B. Leak Test:
• Compressor Fittings and Terminal
X
• Piping Fittings
X
• Vessel Relief Valves
X
C. Vibration Isolation Test X
D. General Appearance:
• Paint
X
• Insulation
X
VII. Electrical
A. Capacitors, Replace every 5 years from startup, include bus
bar. Consult McQuay for parts and instructions.
Key: O = Performed by in-house personnel X = Performed by McQuay Service personnel