Vilter Manufacturing Compressor Unit VSS204

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

Ensure all required parts are available

Select heater cartridge type for removal

Remove heater cartridge from thermowell

Heater Cartridges with Turck connectors

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

Install the command shaft onto the compressor discharge manifold

Secure the command shaft assembly to the discharge manifold

Verify components of the shaft seal assembly are present

Remove bolts (281) securing shaft seal housing (218) to compressor

Insert two bolts (281) into threaded jacking holes to assist in removing shaft seal housing (218)

Remove mating ring (219C) from compressor shaft

Remove oil seal (230) from shaft seal housing (218)

Tap out cup assembly (219B) from the back side of shaft seal housing (218) using a brass drift and hammer

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 oil.

Shut down the compressor unit as per the Stopping/Restarting procedure in Section 4.

Isolate the compressor unit as per the Compressor Unit Isolation procedure.

Drain Oil From Isolated Oil Line

Close oil supply valve and oil filter outlet valve.

Remove plug from drain valve on oil pump strainer.