10. Service and maintenance
42
Fig. 16
1 Oil reservoir
2 Oil filler cap R1"
3 Oil-level indicator
4 Max. oil level
5 Min. oil level
6 Oil drain R1/2"
For the oil change intervals, see maintenance schedule.
Perform oil changes as follows:
•
Switch the screw compressor unit off and ensure
that it is depressurized, electrically isolate and
locked off.
•
Slowly open the oil filler cap (- 2 - Fig. 16), to
depressurize the screw compressor by releasing
any residual pressure in the unit
•
Remove the oil filler cap
•
Open the oil drain (- 6 - Fig. 16) for the pressure
reservoir and the oil cooler
•
Drain oil at operating temperature
•
Close the oil drain
•
Fill in oil up to the marking “maximum oil level”
(- 4 - Fig. 16) (approx. 9.5 litres)
•
Close the oil filler cap
•
Let the screw compressor unit run for approx.
2 minutes
•
Check for leakages
•
Switch the screw compressor unit off
•
Wait at least 5 minutes for the oil to settle and for
the air to disperse
•
Check oil level (see Section 7.5)
•
The oil level must be between the maximum level
(- 4 - Fig. 16) and minimum level (- 5 - Fig. 16)
marked on the oil reservoir.
•
If required, top up oil
Oil Change interval
The operating conditions (e.g. coolant temperatures),
the operating modes and the quality of the intake air
(e.g. content of dust, content of gaseous foreign matter
such as SO
2
, solvent vapours) have a strong influence
on the oil change intervals.
In this case the oil must be analyzed to check the
permissible length of time that the oil can be used (see
also Section 10.15). Under no circumstances should the
oil be used beyond its design life.
10.5
Change of oil filter cartridge
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.
CAUTION
Fire hazard and slip hazard!
•
Do not spill any oil!
•
Look for leaks! Immediately take care of
any spilled oil!
NOTICE
Dispose of the oil filter cartridge properly - it is
hazardous waste! Look for leaks!