Gardner Denver Base Mounted Compressor L90E

Ensure the screw compressor is out of operation

Secure the unit from being switched on again

Pull snap latch outward and remove housing base

Detach air filter cartridge while slightly turning it

Carefully insert new air filter cartridge in the housing

Close air filter with housing base ensuring snap latches click into position

Ensure the compressor is not powered before starting maintenance.

For L90RS-L132RS models, disconnect the system from the mains and wait 10 minutes before touching electrical components.

Press the STOP button on the control panel and wait until the compressor stops and is depressurized.

Verify the pressure gauge shows no more than 4.4 PSI.

Open the screw plug with integrated air vent slots to relieve any residual pressure.

Set the on-site main switch to '0' (OFF) and secure it against being switched on.

Be cautious of hot surfaces when performing maintenance.

Use appropriate safety equipment, including hearing and eye protection.

Follow safety precautions when performing the PRV check on an operating machine.

Testing the Pressure Relief Valve

Test the valve using one of the following methods

Note any local legislation considerations during testing.

Did the pressure relief valve close itself and is not leaky?

Ensure the compressor is not powered before starting work.

For L90RS-L132RS models, disconnect the system from the mains and wait 10 minutes before touching electrical components.

Press the STOP button on the control panel and wait until the compressor stops and is depressurized.

Verify the pressure gauge shows no more than 4.4 PSI.

Relieve the compressor unit by slowly opening the screw plug with integrated air vent slots.

Set the on-site main switch to '0' (OFF) and secure it against being switched on.

Be cautious of hot surfaces when performing maintenance.

Inspection and Replacement Tasks

Shut down the compressor and relieve the system of all pressure

Disconnect, lockout, and tagout the power supply to the compressor package

Ensure no oil is spilled to avoid fire and slip hazards

Remove oil residue and other deposits from the compressor coolers

Check for leaks and address any spilled oil immediately

Turn off the screw compressor unit and secure it against accidental restarts

Ensure the demister vessel is depressurized