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Author Topic: Mysterious wire on X1 auto  (Read 227 times)

Offline ringer

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Mysterious wire on X1 auto
« on: April 30, 2019, 11:53:12 AM »

I had to open the handle on an X1. The switch has 3 wires on the
downstream side: the normal brown live & blue neutral, also a
black wire on live. Its other end is buried somewhere in the handle.
I cannot find anything connected to it. Please what is this wire for?
I am nervous about a live wire going to somewhere unknown inside
a metal handle, is there any reason why I should not disconnect it?
Machine is labelled Class II with a 2 core flex.

Thank you

mark


Online ryevac

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Re: Mysterious wire on X1 auto
« Reply #1 on: April 30, 2019, 12:35:39 PM »
ila_rendered
Copied that pic from sams post
It should be connected to the BLUE neutral not the live.

 The metal shaft will probably be connected direct to the black, could be a choke though and this will discharge any stray static or live etc to neutral - as no earth on the cable.

Seen it myself, but never delved any further and nothing to worry about.
There is a stripdown thread on that model by beko which will confirm it goes to the blue.

If this machine has ever been rewired by anyone, then be careful they haven't done it incorrectly.

DO NOT DISCONNECT THE BLACK

 if you ever had a cable live fault shorting to the metal then it would be better for the vac to short to neutral and trip your consumer unit or blow a fuse - if you disconnect the black and it gets a fault, it could kill you.
The only failure is not to try.

Offline beko1987

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Re: Mysterious wire on X1 auto
« Reply #2 on: May 01, 2019, 10:11:04 PM »
The black wire is the earth for the metal handle, it fits right down the bottom of the plastic upper handle so it touches when fitted. As Mr Rye says, lob it on blue (or lob it on brown but don't ever touch the metal handle again!)
Collector and restorer of vintage vacuums, Dyson Appreciator! Come and see my blog, where I am uploading all my mountains of brochures, manuals and other vacuum cleaner paperwork, and also my youtube channel @beko1987!

Online ryevac

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Re: Mysterious wire on X1 auto
« Reply #3 on: May 02, 2019, 01:54:12 AM »
 :))
The only failure is not to try.

Offline ringer

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Re: Mysterious wire on X1 auto
« Reply #4 on: May 11, 2019, 01:42:45 PM »

Thank you who replied. I found that the resistance between the wire & the handle stem
is off scale > 20 Mohm. I think that this answers the Q: when the wire was connected
to Live, why did it not leave a trail of corpses?

I dont know, but I suspect that if the exposed metal stem **was** connected to Neutral,
this would violate the regulations. What I do know is: when I make this connection, the
machine (previously passing) fails its PAT. The meter says:
Riso < 0.1 Mohm
Ileak > 10 mA

Moral: If ever I need to PAT another Sebo vacuum, I will always open up the handle &
examine the wiring inside.
mark

 

 

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