HYDAC FILTER SYSTEMS GMBH
Performing maintenance | 7
MoWa OLFP-3-6 3819798a en-us
45 / 76
2.
Carry out the pressure release of the filter housing.
In order to do so, fully screw out the vent screw counter-
clockwise by means of an Allen wrench
= 10 mm.
3.
Open the drain ball valve to empty the filter housing.
Collect the escaping fluid (≈ 27 liters) in a suitable con-
tainer. Fill the oil back into the tank of the hydraulic sys-
tem or dispose of it in an environmentally-friendly man-
ner.
Drain the filter housing only via the drain ball
valve with the air bleed screw opened.
Only open the filter housing after no fluid escapes from
the drain ball valve.
4.
Loosen the four screws of the filter cover and unscrew
them completely.