Product Manual

4.3 Filter element change without inPASS™
The hand-tool icon on the figure indicates the items provided in a dedicated filter kit.
1. Before filter element change, check for any leakages at the bottom of the filter bowl
(connection of manual and automatic drain) during normal filter operation. If any leakage is
observed, replace the drain according to the instruction from section Drain replacement.
2. Isolate the filter from the air net.
3. Depressurize the filter by turning the connection nipple of the automatic drain valve
counterclockwise or by opening the manual drain valve.
4. Unscrew the bowl. A whistling noise will warn you if the bowl is not fully depressurized. If this
occurs, the bowl should be screwed back and the venting should be repeated.
5. Discard the filter element.
6. Position the new filter element on top of the bowl and align the filter element:
• For the DD+, PD+, UD+ and QD+ the inlet of the filter element should be aligned with
the inlet of the filter head.
• For the DDp+ and PDp+ the inlet of the filter element should be aligned with the outlet
of the filter head.
This is the only correct way the filter element can be installed, fitting the fin of the filter
element in the foreseen groove in the filter head.
Instruction book
2920 7199 41 27