Karcher HD 7-250 De Tr1 - Manual (Page 81)

Wartung.pm6.5 - GB
Page 4.11
Maintenance
BOGE Operating instructions for CM 9 series screw compressor module
Flushing the oil circuit
4.3 Regular maintenance work
Flushing the oil circuit with clean oil becomes necessary:
– When the oil is excessively soiled.
– Prior to changing the oil type.
ATTENTION!
Detailed information as to the flushing with BOGE oils you can obtain from
the following service number.
++49 / 52 06 / 6 01-0
Cleaning: – After 1500 operating hours,
however, at the latest after one year.
The service life of the compressed air/oil cooling unit depends on the
degree of soiling (dust, oil vapour) of the suctioned cooling air. Extreme
external soiling of the cooling unit leads to an increased temperature
in the oil circuit.
– Switch off the compressor using the OFF button.
CAUTION: Risk of injury!
Switch off the main switch and secure against unintentional switching-on.
ATTENTION!
Do not use any sharp objects for cleaning!
These could damage the cooling unit!
– Blow down the dirt with compressed air in the opposite direction to the
normal cooling air flow. Vacuum out the dirt using an industrial vacuum
cleaner.
Cleaning the com-
pressed air/oil cooling
unit (on site)
(only with
air cooling)
2
5
1 3
Fig. 4.7:
Oil drain with fitted oil drainage
hose Fig. 4.6:
Oil drain oil compressed air
receiver Fig. 4.5:
Solenoid valve on the suction con-
troller with the cap nut screwed on