Question about Dyson DC21 All Floors Stowaway HEPA Bagless Canister Vacuum - Iron/Titanium/Yellow
When is turn on brush is turning on and off during vacuuming.
Posted by Anonymous on
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Posted on Jan 02, 2017
Your Dyson has A clutch unit this engages the brush roller when you pull the handle back to vacuum.
Check the clutch control knob which is at the bottom left side of machine looking from the front.
It should rotate to drive position when handle is pulled back.
If it doesnt turn the knob by hand to drive & try the machine.
If you still have no brush rotation after doing all this then UNPLUG machine from mains supply.
Now lay machine on its side & remove the sole plate, This is the cover over the brush roller.
Turn the 3 plastic screws to unlock postition & lift sole plate off.
Now try to yurn brush roller using your hand. It should turn freely if it is difficult to turn look for any foriegn object obstructing the roller.
If no obstruction found then remove the brush roller from the machine & check the bearings in the ends of the brush roller one or both may be siezed up if they are then new brush roller will solve the problem.
If bearings are good then either the clutch is faulty or the second belt which goes clutch to motor has snapped & will need replacing.
It is difficult to fully explain the clutch removing procedure,
But there are service manuals available for these repairs at this site
Posted on Jul 05, 2008
Stand vacuum up and with it plugged in. Rotate knob between carpet and bare floor and back 5 times leaving it on carpet when finished. Rotate vacuum back from upright position and lay vacuum on the floor, rotating it onto its side. Turn vacuum on.
Posted on Dec 23, 2008
Your machine has 2 belts one goes clutch to brush roller second is motor to clutch.
You need to remove the clutch unit from the machine & replace the motor to clutch belt.
Its A lot to try and explain try this site for help.
Posted on Jan 11, 2009
Sounds like you have two separate problems here. If the brush bar does not rotate, probably the belt is broken. This is easily replaced, but you need to be precise about which model you've got so you get the right belt.
Loss of suction is due either to a blockage or, quite often, to a split in the short length of clear plastic hose that leads back from the brush bar enclosure. Repair is possible but replacement is better.
If you need more help, post here again.
Posted on Apr 21, 2009
Apparent common failure is that either the thin yellow and or blue motor drive wires that run from the LH side of the vacuum where the "control board" is located down into the hinge / ball area become stretched and then fray and eventually break. Happened to my Dyson twice. First repaired under warranty, second took about 20 minutes. You need a Torx screwdriver to remove the LH panel ( 4 screws) and also an access panel (2 screws) at the side of the ball which permits access to the blue / yellow wire connectors. I replaced with a new wire and connectors having fed the wires through the access hole making sure sure enough wire was available for the movement of the handle. Also ensure that when the covers are replaced they do not trap any wires underneath.
Posted on Oct 04, 2009
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