Why is my CT26/36/48 (M & H Class) Dust Extractor warning signal beeping without extracting hazardous or dangerous dusts?

To safely bypass the warning signal on your CT26/36/48 Dust Extractor you should set the hose diameter on the vacuum to a size smaller than the actual hose size.

This does NOT affect the airspeed, but the air flow sensor will trigger at a lower setting due to the "expected" smaller diameter hose. 

If problems persist please contact Festool service for a technican to examine your tool.