Rainbow Vacuum smells like something is burning.

The D4 model Rainbow has a Thermal Cut Off
This has to be manually replaced. It is attached to the Field 120v D4
If this has blown, then most likely something is causing. The Armature Tall 120v D4 could be going bad.
You can also speak with our technical support team Contact Us

RainVac

Belt for Power Nozzle EXCEPT the PN 12
or...
Motor Rainbow 120v
is most likely going bad. You can also call out technical support team if needed... Contact Us

RainVac

The response by Lynnette is in reference to the power nozzle....if you are having this issue with the main unit, then it could be the armature is starting to go bad. Have your Rainbow in front of you and give us a call. We can walk you through some steps to narrow it down.

www.rainvac.com
800-523-0510

Belt can reamin intact but still jam and burn. It won't necessarily break. I suggest you remove the bottom of the vacuum where the bristles spins and where the belt is located. You may have something jammed in there. You may need to remove the bristle to get the belt out. Inspect the belt and replace after clearing the obstruiction.

You may have damaged a bearing or bearing housing and that could be causing the motor armature and field to rub together which in turn causes the motor to draw a significantly increased current to overcome the friction. It could be a simple fix if it is a bearing but if it is the housing then it is likely toast. I used to repair motors years ago and the cost then was not bad. However if the motor is heat damaged, as happened to my power rack last year, it was cheaper to buy a new one than replace the motor. A burned out motor is not worth repairing these days.

Hi, there is no reset button on a Rainbow vacuum.

All SE series vacuums have a built in thermal and load fuse on the motor, and if it blew, it has to be replaced, or wired directly, with out it on there.
Motor brushes are usually the source of a non working Rainbow D4 and SE and all model Rainbow vacuums and when they burn out, they usually take the motor armature with them, from excessive heat and flare electrical arking to the armature. It is probably the thermal and load fuse, that is your problem, if you did not smell any electric burning type of smell, before it quit. It could be the power switch, but not as likely as the fuse. If you have any more questions let me know. I am a Rainbow seller, and a Rainbow expert also.

Thank you,
Ralph

the vacuum is either shorting or the motor or brush assembly is rubbing something.

Your belt is worn and that is why there is a burnt rubber smell. You need to change your belt. You can find a replacement belt and instructions here:

Rainbow Replacement Belts

If pieces are missing or broken I would try and replace the piece. You can usually get these items cheap on Ebay.

Check the carbon motor brushes, there might be arcing on the armature. New brushes may help if the armature is ok.