I have a mysterious problem with a DC07. I have seen other posts from people who have had filters clog up after each use but the solution in that case was the fine-dust seal in the cyclone chamber. Well, that didn't fix it.
Here is what I have changed and cleaned so far...
- Cyclone unit jet-washed using an unusually high water-pressure shower
- Pre motor and hepa filters changed (twice)
- Fine dust collector seal between cyclone chamber and bin base
- Exhaust pre-filter seal
- Entry seal
I have attached some photos of the pre-filter after just use with new filters and a cleaned cyclone chamber. With the new filters the suction is very good right now and, for the first time in a long time, I can feel resistance to it being pushed along due to the good-as-new suction. However it won't stay that way if the filters continue to clog that quickly! This is my second attempt at changing all the filters. I know the paper pre-filter and the hepa filter soon clog up and won't let much air through. I found the newer paper pre-filters don't indicate that they can be washed. I am always washing the sponge part.
One thing I noticed is that the dust is a thin crescent on the opposite side to the exhaust inlet. I have attached some photos of this. This is strange since I would have expected the dust to be evenly distributed or focused at the same side as the exhaust inlet. Does this give any clues?