Automatic/Manual Filter Cleaning (see figure L)

Note: The automatic filter cleaning function is set to be on by default when the dust extractor is switched on.

The LED indicator A (5) will light up continuously.

When the automatic filter cleaning function is active, the flat-pleated filter (34) is cleaned by two blasts of air (pulsating noise). This activates as soon as the sensor detects that the airflow has dropped below a specific level.

Regular use of the filter cleaning function will increase the service life of the filter.

In order to achieve an optimum filter service life, deactivate the automatic filter cleaning function only in exceptional cases, e.g. for wet extraction.

Press the automatic filter cleaning button (10) to activate manual filter cleaning. This deactivates automatic filter cleaning and LED indicator A (5) goes out.

Press the manual filter cleaning button (9) to run manual filter cleaning. The flat-pleated filter (34) is cleaned using 2 blasts of air. The LED indicator M (6) will light up white for 2 s. If LED indicator M (6) goes out, the next blast of air can be triggered. To do this, press the manual filter cleaning button (9) again.

Note: For manual filter cleaning, please note that the time interval between each time a button is pressed should be 2–3 s. Continuously pressing the manual filter cleaning button (9) multiple times will cause the over-temperature protection of the dust extractor to be activated. The over-temperature protection will be automatically suspended after a while  see Rectifying Errors.

To switch off the manual filter cleaning, press the automatic filter cleaning button (10).

A flat-pleated filter with surface dirt is still fully functional. It is not necessary to clean the flat-pleated filter manually by shaking or blowing it out; this may even damage the filter.