Compressor Oil And Oil Filter Change - Atlas Copco XAS 400 JD IT4 HOP Instruction Manual

COMPRESSOR OIL AND OIL FILTER
CHANGE
The quality and the temperature of the oil determine the oil
change interval.
The prescribed interval is based on normal operating
conditions and an oil temperature of up to 100 °C (212 °F)
(see section Preventive maintenance schedule).
When operating in high ambient temperatures, in very
dusty or high humidity conditions, it is recommended to
change the oil more frequently.
In this case, contact Atlas Copco.
1. Run the compressor until warm. Close the outlet
valve(s) (3) and stop the compressor. Wait until the
pressure is released through the automatic blow-down
valve. Unscrew the oil filler plug (2) by a single turn.
This uncovers a vent hole, which permits any pressure
in the system to escape.
2. Drain the compressor oil by removing all relevant
drain plugs (4). Catch the oil in a drain pan. Unscrew
the filler plug (2) to speed up draining. After drain-
ing, reposition and tighten the drain plugs (4).
3. Remove the oil filters (1), e.g. by means of a special
tool. Catch the oil in a drain pan.
4. Clean the filter seat on the manifold, taking care that
no dirt drops into the system. Oil the gasket of the
new filter element. Screw it into place until the gas-
ket contacts its seat, then tighten one half turn only.
5. Fill the air receiver until the pointer of the oil level
gauge is in the upper part of the green area. Be sure
that no dirt gets into the system. Reinstall and tighten
the filler plug.
6. Start the compressor and let it run unloaded for a few
minutes.
7. Stop the compressor, wait a few minutes and top up
with oil until the pointer of the oil level gauge is in
the upper part of the green area.
Never add more oil. Overfilling results in oil
consumption.
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