Can I use a dust separator in addition to Auto Clean on my dust extractor?

You will always need to use an Autoclean Dust Extractor when you are working on plaster or concrete.
The separator within this system is even more efficient in coping with the dust flowing into the extractor which will give the filters a longer life span.
If you are working with timber dust, you can use the
standard M Class Dust Extractors but also run the separator in conjunction so that it also improves the performance of the machine.