They also come with the motor to turn the paddle inside the filter after shutting it down...
With these types of DCs, they return the air back to the shop with very minimal dust [emoji1360]
The 'minimal' in 'very minimal dust' can refer to the
particle size that is returned back into the shop - since the smaller the particles the worse it gets (from a health standpoint, as the smaller the particle the easier it is for you to aspirate it deeper) it could be an idea to
not turn the paddle on a regular basis.
The issue with (different model but same working principle) I ran into was that 'turning the paddle' destroyed the fine dust impactation on the filter that was actually needed (with the filter can we had) to reach an acceptable level of filtration for the very fine particle sizes. Our finding had been that we needed a certain load on the filter surface (to close the pores even further) to get the separation to a level where the fine material fraction was actually collected - a freshly cleaned filter was counter-productive and way less effective.
Also the regular cleaning cycle massively reduced the durability of the filter through the wear and tear from the repeated mechanical agitation.
I hope YMMV, but in case you restart the device (after the filter had been loaded and a cleaning cycle actually did something) and it emits a puff of dust while spinning up (or the area around the outlet filter gets dirty with fine dust over time) you should think again about feeding the exhaust air directly back to your shop - I solved my issue by adding an additional housing around the collector with a large surface filter to trap the fine dust that escaped.
This has some basic information about how such filters work, possibly it is of interest to someone.
