McQuay PFS 155C, Руководство по эксплуатации и обслуживанию

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OM 135 PFS 155C - 315C 45
Maintenance Schedules
I. COMPRESSOR
A. Performance Evaluation (log condition and analysis)# O
B. Motor
•
Measure winding insulation resistance using a megohmmeter X
•
Ampere balance (within 10%) X
•
Terminal check (tight connections, porcelain clean) X
•
Motor cooling (check DC voltage across GDR coils)# X
C. Lubrication System
•
Oil line temperatures (no abnormal temperature drop)# O
•
Oil appearance (clear color, quantity, as viewed through
sightglass)#
O
•
Oil filter change X
D. Compressor capacity change #
•
Compressor loads
•
Lower leaving chilled water temp. control X
•
Record motor amps X
•
Compressor unloads
•
Raise leaving chilled water temp. control X
•
Record motor amps X
•
Reset leaving chilled water control to design
•
Observe water temp. And record amps X
E. Internal compressor check X
II. CONTROLS
A. Operating controls
•
Check water temp. Setpoints against operating temps. X
•
Check panel is clean and dry X
•
Verify motor overload control setpoints X
•
Verify wiring terminations are tight X
•
Check contactor contacts (replace if required) X
•
Check MicroTech service test X
B. Protective controls (test operation of)
•
Alarm relay (if connected) X
•
Pump interlocks X
•
Guardistor relays X
•
High pressure switches X
III. WATER-COOLED CONDENSER
A. Performance evaluation (include water press. drop)# O
B. Test water quality X
C. Clean condenser tubes X
D. Eddy current test --tube wall thickness X
E. Seasonal protection X
KEY:
O = performed by in-house personnel
X = performed by qualified HVAC service personnel
# = Test to be performed with compressor circuit in operation