Author Topic: SEBO BS36 - Motor Issues (Read 5275 times)

TOWERINFERNO · « **on:** August 13, 2018, 09:42:57 pm »

Hi All,

I'm new here (hello) and I'm hoping someone can help me diagnose the problem I have with my Sebo BS36 Comfort.

When running the vacuum motor I get a burning smell along with a dodgy noise (the burning smell set the fire alarm off!) Ive stripped the vacuum motor out and I think it looks fine, however there was a lot of carbon soot in the housing and over the motor etc.

I'm not sure what I need to get my SEBO back up and running??

Any help would be very much appreciated.

Many thanks,

Keir

macman · « **Reply #1 on:** August 14, 2018, 06:53:15 pm »

What you have described are the classic symptoms of a burnt out motor: check the carbon brushes, the odds are they down to the metal.

TOWERINFERNO · « **Reply #2 on:** August 14, 2018, 07:36:24 pm »

Hi buddy,

Many thanks for getting back to me. It looks like there is still a little life left in the brushes see photo?

MVacs · « **Reply #3 on:** August 15, 2018, 02:18:23 pm »

Bench test the motor while you have it out.

Dysonboy · « **Reply #4 on:** August 16, 2018, 12:02:22 am »

Quote from: TOWERINFERNO on August 14, 2018, 07:36:24 pm

Hi buddy,

Many thanks for getting back to me. It looks like there is still a little life left in the brushes see photo?

Commutator looks a little burnt out... They do go black, but normally that deep of colour they are burnt.

ryevac · « **Reply #5 on:** August 16, 2018, 11:08:51 am »

You can clean commutator with a fibreglass pen and replace brushes with good quality ones.

I have saved a few using the above method but generally once the commutator has started to get really hot it's life and reliability is reduced i found.
Easy answer is to replace the motor for a hassle free future. Nothing worse than spending a couple of hours working on a machine reconning the motor and it fails a couple of months later down the line, especially if it's a paying customer.

I haven't done a massive amount of work on this model, but if it has an exhaust filter - is that ok ?

macman · « **Reply #6 on:** August 16, 2018, 11:47:11 am »

I'd agree with the above. With most Dyson motors of the DC04/07/14 era, it's generally not worth it. With Sebo motor prices though, it's worth a try with just new brushes.