Product Manual

6. Remove the drain valve by unscrewing the retaining nut underneath the bowl.
7. Remove the O-ring from the bowl and clean the bowl. Position a new O-ring on the bowl.
8. Remove the O-ring from the drain valve and position a new O-ring on the drain valve. The latter is
supplied with each new filter kit.
9. Reinstall the drain valve in the bowl using the retaining nut (tightening torque 3 Nm).
10. Reposition the new filter element with the 2 new O-rings.
11. Screw the bowl completely on the head.
A small amount of acid-free vaseline may be applied to screw threads and O-rings to
facilitate the assembly.
4.3 Service intervals
QMF, QPF, QCF filters
The filter elements of oil mist filters (QMF, QPF) should be replaced after 4000 hours. The gauge or pop-
up is not a measure, as a typical oil mist filter operates in the steady state mode during its life and this
mode is e.g. 200-220 mbar.
Note that the indicator or gauge will not move into the red area but will stay yellow or orange during
operation.
Instruction book
2920 7150 20 17