Vilter Manufacturing Compressor Unit VSS243

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

Review manufacturer's instructions on lubrication

Check calibration of all controls

Check operation of all controls

Check operation of safety controls

Inspect oil cooler for corrosion

Shut down and isolate compressor unit

Remove components securing the command shaft assembly

Remove the command shaft and mounting plate from the compressor

Install a new o-ring (446) into the groove on the compressor discharge manifold

Apply clean compressor lubricating oil on the o-ring

Install the command shaft onto the compressor discharge manifold

Check entire system thoroughly for leaks

Grease valve stems and threads for the valve caps

Flush out sediment from water circuits

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