I want to know WHY my HEPA filter and cover blow off my unit with force each time I turn the unit on and start sweeping...Help?

Are you sure that you are correctly connecting the filter, and flipping the tabs to "lock" it into the "closed" position.

Turn the Dyson on its back as if you were servicing the beater brush and on the RH side you'll see the filter housing for the HEPA and a T-15 Torx screw. Remove this screw and then remove the cover for the HEPA filter.

This has a simple solution IF you have a air compressor with a high pressure nozzle. Outside the house, first remove the Dust bin completely and lay the unit down with the dust bin area up. now start blowing the nozzle at the hepa filter, Alot of dust will come out. Now start to rotate the filter while blowing the dust out. The filter will move one way easier, When there is no more dust reinstall the dustbin and check the suction and the rotation of the filter.
Tony

You have to remove rear cover (on the opposite side than the intake is) There are 2 kinds of HEPA and 2 kinds of filter covers:

HEPA encased in black plastic - on the bottom of the unit you will see two latches and you can use a flat screw driver release them and filter cover just pops out.

HEPA older style (white filter with black plastic frame) - there are 2 Phillips screws on the bottom of the unit and 2 more under the cord caddy. Use flat screw driver to remove the cord caddy (put it in between the housing and the caddy and it would come off)

If you need filters - they are HERE.
Good Luck

Called Dyson today about the cyclone canister clogging in my DC17 Animal. Turns out it's a problem with the black rubber gasket in the bottom of the canister. This also causes the HEPA filter to get lots of dirt and debris on top of it. They are sending me a new Cyclone canister with the corrected gasket. This will prevent anything but small particles of dust from entering the top of the cyclone and the HEPA filter should no longer collect all that stuff. Hope so!

I just fixed my HEPA filter not rotating!!

It involves taking apart the vacuum HEPA area. All screws are the same size. There are a LOT of 'em. Really straightforward putting it back together too.

ok, once you take the HEPA canister area off the vacuum, careful with the wires! Unplug them from the controller board. You open up the HEPA chamber by removing more screws until you see where the motor that turns the filter is mounted on the side. Remove motor from the green chamber. Note where the washer goes. Once the motor is off, you'll see that the center hub that drives the HEPA filter is rounded out. What I did was jam little bits of aluminum from a pop can into the space between the circle and the square to force the walls back to square. I started by folding a little piece of aluminum over and over so it was about three layers thick. Jammed that in. That wasn't quite enough thickness so I shoved another piece with it. If you can find something that is about 4 times the thickness of a pop can aluminum, that'd probably work too. Slight wedge shape on the tip would help. Any sort of tiny shim.

To test your work, just put a couple of holder screws into the HEPA cannister housing, plug in the cover/switch, plug in the HEPA moter. Turn it on for a few seconds to make sure the filter turns. Then you can add more thickness to the hub or put things back together.

do you have the SELF-CLEANING, rotating HEPA filter?

I just fixed my HEPA filter not rotating!!

It involves taking apart the vacuum HEPA area. All screws are the same size. There are a LOT of 'em. Really straightforward putting it back together too.

ok, once you take the HEPA canister area off the vacuum, careful with the wires! Unplug them from the controller board. You open up the HEPA chamber by removing more screws until you see where the motor that turns the filter is mounted on the side. Remove motor from the green chamber. Note where the washer goes. Once the motor is off, you'll see that the center hub that drives the HEPA filter is rounded out. What I did was jam little bits of aluminum from a pop can into the space between the circle and the square to force the walls back to square. I started by folding a little piece of aluminum over and over so it was about three layers thick. Jammed that in. That wasn't quite enough thickness so I shoved another piece with it. If you can find something that is about 4 times the thickness of a pop can aluminum, that'd probably work too. Slight wedge shape on the tip would help. Any sort of tiny shim.

To test your work, just put a couple of holder screws into the HEPA cannister housing, plug in the cover/switch, plug in the HEPA moter. Turn it on for a few seconds to make sure the filter turns. Then you can add more thickness to the hub or put things back together.

Not sure about you model, but some of the dyson's have the hepa filter under the dirt container. Remove the container, there is a cover that comes off and the filter is under that cover.

I just fixed my HEPA filter not rotating!!

It involves taking apart the vacuum HEPA area. All screws are the same size. There are a LOT of 'em. Really straightforward putting it back together too.

ok, once you take the HEPA canister area off the vacuum, careful with the wires! Unplug them from the controller board. You open up the HEPA chamber by removing more screws until you see where the motor that turns the filter is mounted on the side. Remove motor from the green chamber. Note where the washer goes. Once the motor is off, you'll see that the center hub that drives the HEPA filter is rounded out. What I did was jam little bits of aluminum from a pop can into the space between the circle and the square to force the walls back to square. I started by folding a little piece of aluminum over and over so it was about three layers thick. Jammed that in. That wasn't quite enough thickness so I shoved another piece with it. If you can find something that is about 4 times the thickness of a pop can aluminum, that'd probably work too. Slight wedge shape on the tip would help. Any sort of tiny shim.

To test your work, just put a couple of holder screws into the HEPA cannister housing, plug in the cover/switch, plug in the HEPA moter. Turn it on for a few seconds to make sure the filter turns. Then you can add more thickness to the hub or put things back together.

It maybe that the filter is in need of replacement. They need to be changed once a year.