Vilter Manufacturing Compressor Unit VSS127

Open any other valves that may trap liquids to prevent serious injury and/or damage to equipment.

Follow local lock-out/tag-out procedure. Ensure compressors are depressurized before starting work.

Removal of Type C Sure-Flex Coupling

Shut down the compressor unit, refer to Stopping/Restarting procedure in Section 4.

Turn disconnect switches to the OFF position for the compressor unit and oil pump motor starter, if equipped.

Allow compressor, motor, and surrounding components to cool prior to servicing.

Mark locations of hubs prior to removal.

Notify VilterTM prior to performing a compressor replacement

Shut down and isolate the compressor unit

Disconnect all cables from sensors on compressor and actuators

Remove bolts securing C-flange to compressor (if equipped)

Ensure adequate ventilation and refrigerant vapor detectors are in place as per ASHRAE standards.

Wear rubber gloves and a face shield to avoid skin contact with condensate or oil.

Use appropriate lifting devices and ensure they are capable of lifting the weight of the component.

Install lifting eyes on oil separator manhole cover, if required.

Secure appropriate lifting device to oil separator manhole cover.

Remove all bolts except top four bolts securing oil separator manhole cover to oil separator vessel.

Follow manufacturer’s instructions on lubrication

Check calibration and operation of all controls

Check calibration and operation of safety controls

Check oil cooler for evidence of corrosion

Check all pressure and temperature readings

Check micronic oil filter inlet and outlet pressures for excessive pressure drop

Is the pressure drop across the micronic oil filter greater than 45 psi?

Clean strainers each time filter cartridge is replaced

Check compressor sound for abnormal noises

Check shaft seals for excessive oil leakage

Is the oil leakage within the normal range of 6 to 15 drops per hour?