Karcher HD 7-250 De Tr1 - Manual (Page 78)

Wartung.pm6.5 - GB
Page 4.8
Maintenance
BOGE Operating instructions for CM 9 series screw compressor module
4.3 Regular maintenance work
Change: – After the first 500 operating hours.
– After 3000 operating hours,
however, no later than after one year.
– With each oil change!
– Switch off the compressor using the OFF button.
CAUTION: Risk of injury!
Switch off the main switch and secure against unintentional switching-on.
– Close e.g. ball valve at the compressed air outlet.
– Vent the compressor (as described in the beginning of the chapter).
– Wait approx. 3 minutes to permit the oil to settle.
CAUTION: Risk of injury!
Do not touch hot surfaces!
– Slacken screws on service cover and remove cover.
– Take out oil filter cartridge and remove from support body .
– Slide support body in the new oil filter cartridge.
CAUTION!
Over-current / Non-return valve must be fitted facing up.
– Fit oil filter cartridge with support body .
– Check o-rings on service cover for damage and replace if necessary.
– Fit service cover and tighten screws.
– Open ball tap at compressed air exit.
– Switch on compressor and run till it reaches operating temperature.
– Check tightness of service cover and re-tighten screws.
Changing the oil filter
(Fig. 4.4)
6
1
4
5
6
3
Fig. 4.4: Changing the oil filter / Changing the oil separators