now we will clean out the bottom plate.

remove the plastic shell that is covering Torx screws.

remove it using a Stanley knife.

remove the screws ( at both sides ) and remove the plastic frame.

You'll see there will be a lot of dirt in the frame. blow (or vacuum clean) it. and put it back. also clean out the holes.

the machine is now clean and good to use again. I advise to do these hole guide one a year. Clean the "normal" filters everytime you use the machine. (just take out the fluff)