Comments on: Tearing apart my Miele S5210 vacuum cleaner

By: robert

robert — Sun, 29 Jan 2012 15:13:44 +0000

Thank you, Thank you. After dismantling the whole machine, the motor was still jammed,then I nociced that one of the screws of the motor cover worked itself loose ((????))jamming the blower. I replaced the screws and added lockwashers, cleaned the whole v-cleaner.Now we have a vacum cleaner! Thanks again, My Son in law almost threw the v-c in the garbage.
The most usefull article in the internet.

By: Merv

Merv — Fri, 30 Dec 2011 05:27:52 +0000

Gteat tutorial. Thanks for putting it together. I used it to fix a jammed cord.

By: Simon

Simon — Thu, 24 Nov 2011 17:19:51 +0000

No, it wasn’t necessary on mine. I am not sure what would happen when that’s needed. I would probably try to find something similar (from a power tool repairer maybe?) and make it fit.

By: Dave Coulson

Dave Coulson — Thu, 24 Nov 2011 13:55:55 +0000

By the way, the “thingy” is a Klixon thermal fuse, rated at 18A. It’s hard to find any equivalent fuses, because you need the high current rating, and nobody seems to make an 18A rated fuse quite as small as this one.

Here’s a link:
http://www.klixon.com/klixon/motor-protector-3mp-self.htm

By: Dave Coulson

Dave Coulson — Thu, 24 Nov 2011 13:46:12 +0000

Thanks for a first-class tutorial on the Miele S5210. Well done, it saved me a load of time and effort.

My vacuum cleaner suffered the same fault as yours, and I have found out what caused it in my case. Taking apart the motor, I removed the triac PCB assembly. I noticed that one leg of the fuse had fractured, and there was evidence of sparking across the fracture. Prior to the failure, the vacuum motor had suddenly started making more noise, which turns out to have been due to the intermittent connection through the thermal fuse. After a few minutes, the sparking destroyed the triac and the unit died…but the thermal fuse was still OK! (apart from having one leg sheared off). I was able to repair the sheared leg and replaced the triac, and all is now fine and tickety-boo.

So the problem in this case was not poor filtering, but cracking of the thermal fuse, probably caused by the vibration. I wonder if the motor manufacturer ever assessed the thermal fuse for vibration susceptibility….

By: Fernando

Fernando — Tue, 01 Nov 2011 18:30:19 +0000

By the way, have you replaced your carbon brushes?
Thanks in advance.

By: Fernando

Fernando — Tue, 01 Nov 2011 11:56:05 +0000

Great page!
Well, my broken one is a german model s536. I guess carbon brushes are gone (11 years old). I could disassemble it but don’t know how to get to those brushes, it seems the motor is a little different. Beside the fact i cannot get Miele parts here in Brazil. My wife will go to Germany soon and will bring new ones. It will take a while…Anyway, thank you for your post, it is brilliant!

By: Tim

Tim — Mon, 24 Oct 2011 19:58:50 +0000

Thank you so much mate!! Brilliant step by step guide. I’m a total washout at DIY which makes it even more impressive!! I was able to take the hoover appart and repair a frayed power cable. The hoover is working as good as ever!! Saved me buying another hoover. Well done!!

By: Simon

Simon — Wed, 12 Oct 2011 17:20:19 +0000

Hi Leo, sorry I have to manually approve comments and was a bit slow. I don’t know what the other part actually is. Some kind of thermal cutout I think. But I don’t know where you could get one from. If you’re replacing the original motor with a less powerful one then you might be fine using the old electronics? I’m not really an expert but a TRIAC rated for the more powerful motor will certainly be fine for the lower powered one I think.

By: leo schrader

leo schrader — Wed, 12 Oct 2011 12:01:16 +0000

Hi again there on the other side of the world!
Posted yesterday, but can’t seem to find the post.
Maybe I’, not allowed to?
Anyway, I”LL try aagin:
looking for the make of the “thingy”
I trashed the old 2200W motor because I wrecked it while trying to release the bottom bearing.
I can get a replacement 2000W motor but it doesn’t include the motor electronics. I found the triac (thanks for that!) but still need the other part.

could anybody………?! Hope so.

kind regards,
Leo
Amsterdam