10. Service and maintenance
40
Fig. 18
1 Oil reservoir
2 Oil filler cap R1"
3 Oil-level indicator
4 Upper fill level
5 Lower fill level
6 Bleed ball valve R1/2”
7 Drain hose
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 (- 2 - Fig. 18) to
relieve the screw compressor of any residual
pressure in the system
•
Remove the oil screw plug
•
Open the oil drain (- 6 - Fig. 18) from the pressure
reservoir
•
Drain the oil at operating temperature through the
drain hose (- 7 - Fig. 18)
•
Close the oil drain
•
Fill with oil up to the mark “maximum oil level”
(- 4 - Fig. 18) (approx. 4 US-Gal.)
•
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, (see Section 7.4)
•
The oil level must lie between the “maximum oil level”
(- 4 - Fig. 18) and “minimum oil level” (- 5 - Fig. 18).
•
If necessary, top up the oil.
Oil change interval
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 SO
2
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 (also see Section
10.14).
10.5
Change 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!
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