Changing Compressor Fluid. Quincy Compressor QGV

Section V - Servicing

Changing Compressor Fluid

The interval for changing the compressor fluid depends on the type of fluid used and the operating conditions of the unit. See

Section VI - Compressor Fluids for more specific information concerning fluid life of specific fluids.

Fluid change instructions:

For QGV-75 through 200

• Turn the compressor off by the main switch and perform proper lockout/ tagout procedure.

• Completely depressurize the compressor circuits (reference

‘Preparing for Maintenance or Service’ on page 70 and ‘Safety’ instructions on page 72).

• Slowly unscrew the plugs at the fluid fill and discharge port.

• Attach a pipe to the drain valve, open the drain valve and allow all the fluid to drain from the unit. In order for all fluid to be removed, fluid should be at running temperature (between 140°F and 175°F).

• Dispose of the fluid in accordance with

Local, State, and Federal environmental regulations.

• Remove the pipe, close the draincock and reinstall the plug.

• Fill the compressor with the appropriate amount of new fluid through the fluid inlet port.

• Check the fluid level at the sightglass.

• Replace the o-ring if necessary on the fluid filler cap and reinstall.

For QGV-20 through 60

• Press the emergency stop button and remove the right side cabinet panel (if applicable).

• Check the pressure on the reservoir pressure gauge and wait until the pressure in the reservoir tank drops to approximately 15 psig.

• Close the 1/4 turn valve on the blowdown valve.

• Remove the drain plug and attach the

1/4” NPT barb fitting and drain tube

(supplied with the unit) to the drain on the reservoir.

• Slowly open the 1/4 turn valve on the reservoir drain. The pressure remaining in the tank will force the fluid out. When air begins to escape from the tank, close the valve.

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• After closing the valve, remove the tubing and barb fitting and reinstall the drain plug.

• Remove the plug from the fluid fill port and refill the reservoir with the appropriate amount and type of fluid.

NOTICE!

R e f e re n c e s e c t i o n V I f o r m o re information regarding compressor fluids.

• Open the 1/4 turn valve on the blowdown valve and restart the compressor.

NOTICE!

The 1/4 turn valve on the blowdown valve MUST be open for the unit to blowdown during regular unit operation.

Quincy Compressor-QGV Series