34
8. Servicing and maintenance
8.5
Change of the oil filter cartridge
Danger
.
Only replace the oil filter cartridge, when the screw
compressor unit is out of operation and depressuri-
zed ! Be careful with hot oil : Danger of scalding !
Do not spill oil !
For the changing intervals, see the maintenance
schedule.
If the oil filter cartridge is monitored (option), a high
differential pressure is indicated at the operating panel.
If the corresponding LED lights up, change the oil filter
cartridge.
Make sure that the screw compressor unit is depressu-
rized. Change the oil filter cartridge as follows :
• Unscrew the oil filter cartridge using an appropriate
tool
• Dispose of the oil filter cartridge according to the re-
gulations
• Oil the gasket of the new oil filter cartridge slightly
• Screw on the new oil filter cartridge and tighten ma-
nually (take notice of the instructions on the oil filter
cartridge)
• Check for leakage
• Check oil level
• If required, top up oil.
8.6
Change of the oil fine separator
Fig. 22
Note
Dispose of the oil filter cartridge in line with the regu-
lations - special waste - ! Check for leakage !
Changing intervals for oil filter cartridges
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, etc.) have a strong influ-
ence on the oil change intervals. For such applications,
the required changing intervals could be shorter.
Note
Dispose of the fine separator cartridge in line with the
regulations - special waste - ! Check for leakage !
For the changing intervals, see the maintenance
schedule.
If the oil fine separator cartridge is monitored (option),
a high differential pressure is indicated at the operating
panel. If the corresponding LED lights up, change the
oil fine separator cartridge.
Make sure that the screw compressor unit is depressu-
rized. Change the oil fine separator cartridge as fol-
lows :
• Unscrew the fine separator cartridge using an ap-
propriate tool
• Dispose of the fine separator cartridge according to
the regulations
• Oil the gasket of the new fine separator cartridge
slightly
• Screw on the new oil filter cartridge and tighten ma-
nually (take notice of the instructions on the fine se-
parator cartridge)
• Check for leakage
Danger
.
The pressure reservoir is under pressure ! Only
work on the screw compressor unit, when it is out of
operation and depressurized !
Be careful with hot oil : Danger of scalding !
Do not spill oil !
Fig. 23
