MMHVAC-SA HVAC System Semi-Annual

Items to Check & Initial Completion:

AIR COMPRESSOR
1. ___ Drain tank and check traps
2. ___ Change compressor oil and check pressure
3. ___ Check belt(s), replace as required
4. ___ Change intake filters as required
5. ___ Check unloaders and check valves
6. ___ Check pressure safety valve
7. ___ Check motor operating conditions and lube
8. ___ Check P.E. switch, starter and alternator
9. ___ Record compressor run time. If excessive, check for
       leak(s)


REFRIGERATED AIR DRYER
1. ___ Check refrigerant pressure (33#)
2. ___ Check refrigerant temperature (35 degrees F)
3. ___ Clean condenser coil and cover grill
4. ___ Check drain trap and bypass valves


FILTER AND PRESSURE REDUCING STATION
1. ___ Check filters. Replace as needed.
2. ___ Check oil filter. Replace as needed.
3. ___ Check pressure reducing valve settings
4. ___ Check low pressure safety valve


ALTERNATOR
1. ___ Check operation and setting
2. ___ Check all electrical connections


BOILER, CHILLER, CONVERTOR, PUMPS AND ZONE VALVES
1. ___ Calibrate all controllers
2. ___ Calibrate all transmitters and receiver gauges
3. ___ Check all P.E. switches
4. ___ Check all control valves. Repack those on repack
       schedule. Repack leaking valves and record all repack
       dates.
5. ___ Check all pilot positioners
6. ___ Check all auxiliary control devices


FAN SYSTEMS AND HVAC UNIT CONTROLS
1. ___ Review sequence of operation
2. ___ Check all dampers and lube with silicone based
       lubricant
3. ___ Check pilot positioners
4. ___ Check all control valves. Repack those on repack
       schedule. Repack leaking valves and record all repack
       dates.
5. ___ Calibrate all controllers
6. ___ Calibrate all transmitters and receiver gauges
7. ___ Check solenoid air valves, P.E. switches and air
       valves
8. ___ Check all auxiliary control devices
9. ___ Perform housekeeping on control panels


MATERIALS REQUIRED
1. Belts
2. Suction filters
3. Oil filters
4. Particle filters
5. Oil lubricants
6. Grease
7. Drain trap gaskets
8. Clean-up materials


Comments and Recommendations:

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