Product Manual

4 Maintenance
4.1 Maintenance
When maintaining the filter, keep in mind the following:
• On filters with manual drain valve, open the latter at regular intervals to evacuate collected dust or
liquid.
• In case an automatic drain valve or a solenoid timer drain is installed, manual draining can be carried
out by turning the connection nipple of the automatic drain valve counterclockwise.
When the filter has to process air with a temperature higher than the specified maximum
temperature, the filter's lifetime will be reduced considerably!
4.2 Filter element change
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 no leakage is observed, point 6 up to 9
can be discarded.
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.
Instruction book
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