The extraction arm captures the polluted air with pinpoint accuracy. Once you have finished your work, close the shut-off flap. Previously this had no "side effects", but now the contactless airflow switch Airflow Switch AFS2.2 switches the air volume of the filter system down or off for you. If you need the extraction system again, simply open the shut-off flap and the extraction system starts up again so that the air volume flow starts up again or the air flow rate is switched up a level.
Technical description:
A magnet attached to or molded into the throttle valve causes a contactless closing or opening of a reed relay when the throttle valve is turned. A new elegant holder for the sensor and for the socket can be easily clicked onto the tube of the suction arm.
