Maintenance
5.3
Regular maintenance work
Page 42
BOGE Operating instructions for C 10 L...C 20 L series screw compressors
Oil change
Change:
–
After 9,000 operating hours, however, at the latest after two years.
–
For other types of oil the appropriate oil change intervals must be complied
with.
Building up a pressure cushion
To enable a quick discharge of the oil from the compressed air/oil chamber or
to overcome a height difference, a small pressure cushion (approx. 22 psig
system pressure) can be built up. This pressure cushion forces the oil through
the drain hose into a suitable collecting basin.
–
Switch off the compressor using the OFF button.
Draining old oil
Fig. 5.6: Solenoid valve on the suction controller with the cap nut screwed on
Note!
The service life of the oil, the oil filter and oil separators is reduced under the
following conditions:
–
When the compressor is operated at extreme ambient temperatures.
–
When the intake air is extremely soiled.
Caution: Risk of injury!
Press Emergency Stop button, open mains disconnection device and secure
against unintentional switch on by means of a padlock.
–
Switch off compressor. After ap-
prox 2 sec. screw cap nut (5) on
the bleed aperture of the mag-
netic valve (the nut is located in
the storage compartment of the
switch cabinet).
Caution: Risk of injury!
Danger of burning due to hot oil!
Always wear safety gloves!