Section 5 • Maintenance/Service
Maintaining Proper Operation | Compressor Unit Isolation for |
To ensure proper operation, the following items should | Maintenance/Service |
| |
be checked: | WARNING |
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•Calibrate all transducer and RTDs.
•Check capacity and volume actuator calibration.
•Check fuses in the PLC panel.
•Check for loose wiring connections in the PLC panel.
•Check relay and contact operation for relays in the PLC panel.
•Verify the operation of the suction and discharge check valves.
•Check for correct rotation of all motors on the pack- age (compressor, oil pump, and fan motors).
•Check that the piping to the oil cooler is correct.
•Check setup of soft starts and VFDs.
•Verify set points in the PLC.
•Check oil heater operation.
•Verify oil line check valve is installed for correct flow .
•Check for loose bolts on the compressor unit. Tighten any loose bolts.
When working with LFG, NG or other dangerous or flammable gases, ensure there are adequate ventilation and vapor detectors. Refer to national fire and building codes. Failure to comply may result in serious injury or death.
WARNING
Avoid skin contact with any condensate or oil. Wear rubber gloves and a face shield when working with condensate or oil. Failure to comply may result in serious injury or death.
WARNING
At shutdown, open any other valves that may trap liquids to prevent serious injury and/or damage to equipment.
WARNING
Follow local lockout/tagout procedure. Failure to comply may result in serious injury, death and/or damage to equipment.
NOTICE
Recover or transfer all gas vapor in accordance with local ordinances before opening compressor unit to atmosphere.
The compressor unit must be isolated and depressurized to atmosphere prior to servicing.
1.Shut down the compressor unit, refer to Stopping/ Restarting procedure in Section 4.
Suction
Figure
5 – 2 | VSG/VSSG • Installation, Operation and Maintenance Manual •Vilter/Emerson • 35391SSG |