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English
7.3 Replacing the lter
Thesensorcapcontainsalter.Theltermustbeexchanged,ifyoudetectanysoil.
z Unscrew the sensor cap.
z Push the soiled lter from above out of the sensor cap, using a suitable tool (e.g. a small
screwdriver).
z Placeanewlterlooselyintothesensorcap.
z Screwthesensorcapontheswanneck.Thelterwillbepressedintothecorrectposition.