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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.
1. Run the compressor until warm. Close the outlet
valve(s) (2) and stop the compressor. Wait until
the pressure is released through the automatic
blow-down valve. Unscrew the oil filler plug (4)
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 the drain
plug (3). Drain plugs are fitted on the air receiver
and compressor element. Catch the oil in a drain
pan. Unscrew the filler plug to speed up draining.
After draining, reposition and tighten the drain
plugs.
3. Remove the oil filter (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
gasket contacts its seat, then tighten one half turn
only.
5. Fill the air receiver until the oil level reaches the
thread. Take care that no dirt drops into the
system. Reinstall and tighten the filler plug (4).
6. Run the unit unloaded for a few minutes to
circulate the oil and evacuate the air trapped in the
oil system.
7. Stop the compressor. Let the oil settle for a few
minutes. Check that the pressure is released by
opening an air outlet valve (2). Unscrew filler
plug (4) and add oil until the oil level reaches the
thread. Reinstall and tighten the filler plug.
The prescribed interval for compressor
oil change is not to be exceeded in any
case. When the oil exchange interval is
exceeded, this could lead to serious
damage to the compressor.
In case the compressor oil lifetime has
been exceeded, please consult the Atlas
Copco Customer Center for appropriate
cleaning and flushing instructions.
In this case, contact Atlas Copco.
Never add more oil. Overfilling results in
oil consumption.
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