Gardner Denver Base Mounted Compressor L90

Danger: High voltage – Hazard of shock, burn, or death. Be careful with electricity: only work on screw compressors which are not powered.

Only for L90RS-L132RS: There is a risk of electric shock from charged capacitors! Disconnect the system from the mains and wait 10 minutes before touching electrical components.

Warning: Some parts of the system will still be pressurized after the system has been switched off. Small parts propelled at high speed by compressed air can penetrate the skin or destroy an eye.

Caution: Burn hazard – Hot surfaces. Be careful of the hot surfaces of machine parts when carrying out checks, making settings and doing maintenance.

Check for dirt accumulation on oil/aftercooler core faces and the cooling fan.

Clean the exterior fin surfaces of the cores by blowing compressed air carrying a nonflammable safety solvent, that will not damage aluminum in a direction opposite that of the cooling air flow.

Press the STOP button on the control panel and wait until the screw compressor comes to a stop and the screw compressor unit is depressurized.

Enter the pressure gauge reading

Relieve the screw compressor unit by slowly opening the screw plug (oil filling opening) with integrated air vent slots.

Danger! Only perform checks and carry out work on the screw compressor when the unit is out of operation, depressurized, and secured from being switched on again!

Is the unit out of operation and depressurized?

Is the unit secured 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. The snap latches must click into position.

Sign off on the air filter replacement

High voltage – Hazard of shock, burn, or death

 Be careful with electricity: only work on screw compressors which are not powered.

 Only for L90RS-L132RS: There is a risk of electric shock from charged capacitors! Disconnect the systemfrom the mains and wait 10 minutes before touching electrical components.

The power capacitors need this time to discharge.

Every 2000 hours operation or 6 months

1. Replace the oil filter element, air filter element, cool air inlet filter pad and control box filter (if app.) as indicated by the compressor controller, every 2000 hours or every 6 months, whichever occurs first.

Perform filter mat change as follows:

Danger! Air/oil under pressure will cause severe personal injury or death. Shut down the compressor, relieve the system of all pressure, disconnect, lockout and tagout the power supply to the compressor package before removing valves, caps, plugs, fittings, bolts and filters.

NOTICE!: Dispose of the oil filter cartridge properly - it is hazardous waste! Look for leaks!

Caution! Fire hazard and slip hazard! Do not spill any oil! Look for leaks! Immediately take care of any spilled oil!

Switch off the screw compressor unit, secure it against an accidental restart and ensure that it is depressurized.

Wait at least 5 minutes until the oil has settled, i.e. until the air has bubbled out.

Unscrew the oil filter cartridge with a suitable tool

Dispose of the oil filter cartridge properly

Lightly oil the seal of the new oil filter cartridge

Screw on the new oil filter cartridge and tighten by hand (see the notes on the oil filter cartridge)

High voltage – Hazard of shock, burn, or death

 Be careful with electricity: only work on screw compressors which are not powered.

 Only for L90RS-L132RS: There is a risk of electric shock from charged capacitors! Disconnect the systemfrom the mains and wait 10 minutes before touching electrical components.

The power capacitors need this time to discharge.

Every 4000 hours operation or 12 months

1. Visually check for leakage on the shaft seal,replace as required.

The tool kit is required to change the oil seal. If the oil seal is a lip seal, the wear sleeve must always be replaced.

2. Replace lubricant every 8000 hours. Under adverse conditions, change more frequently. Flush system if required.