Changing The Oil Filter Cartridge - Gardner Denver L Series Original User And Service Manual

The changing intervals can be found in the maintenance schedule.
Perform oil changes as follows:

Turn off the screw compressor unit, secure it against accidental restarts and make sure that the
demister vessel is depressurized.

Slowly open the oil screw plug to relieve the screw compressor of any residual pressure in the
system.

Remove the oil screw plug.

Open the oil drain from the pressure reservoir

Drain the oil at operating temperature through the drain hose.

Close the oil drain.

Fill with oil up to the mark "maximum oil level".

Close the oil screw plug.

Run the screw compressor for approximately 2 minutes.

Check for leaks.

Shut off the screw compressor.

Wait at least 5 minutes until the oil has settled, i.e. until the air has bubbled out.

Check the oil level.

The oil level must lie between the "maximum oil level" and "minimum oil level".

If necessary, top up the oil.
Changing times for lubricants
Operating conditions (e.g., coolant temperatures), the type of operation and the quality of the intake air
(e.g., dust content, ratio of gaseous foreign substances such as SO2 and solvent vapors) have a strong
influence on the oil change intervals.
In these cases, the operational life of the oil must be checked by performing an oil analysis.

8.6.4 Changing the Oil Filter Cartridge

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.
Fire hazard and slip hazard!
 Do not spill any oil!
 Oil residue and other deposits must be removed from the compressor coolers which are
exposed to hot air in accordance with the user manual.

Look for leaks! Immediately take care of any spilled oil!
Dispose of the oil filter cartridge properly, it is hazardous waste! Look for leaks!
DANGER
CAUTION
NOTICE
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