Vilter Manufacturing Compressor Unit VSS222

Ensure safety precautions are followed

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

Disconnect connectors from actuator

Note orientation of components to aid in installation

Remove E-clips, Locking Retainers, Grooved Bolts and Washes securing actuator assembly to actuator mount

Remove actuator assembly from actuator mount

Check the refrigeration system for leaks with a suitable leak detector

Review the microprocessor log and log sheets

Check refrigerant levels in vessels

Compressor Shaft Bearing Clearance Inspections

Check that all necessary tools and equipment are in place

Ensure force applied does not exceed 300 to 500 lbs at point of contact

Determine Maximum Applied Force

Main Rotor Bearing Axial Clearance Inspection

Remove center member as per Drive Coupling Replacement procedure

Install and zero dial indicator on compressor frame

Record measurement after pushing coupling towards motor

Re-zero indicator and reposition fulcrum on motor

Ensure all required parts are available

Select the type of heater cartridge

Remove heater cartridge from thermowell

Heater Cartridges with Turck connectors

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)