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I have an Electrolux Commercial Upright vacuum Model U129C. It has a device which turns off the motor driving the beater bar if something gets stuck in it. There is a simple reset button to restart the beater after clearing the obstruction. Just recently on flat dense low pile surfaces the switch cuts in after just a few seconds and turns the beater bar off. This doesn't happen on high pile carpet but the motor doesn't quite sound normal. There is no obstruction - the beater bar can spin freely when disconnected from the belt.. The motor still works but seems to sound a little slower and more labored. If the beater head is lifted off the carpet it works fine but cuts out as soon as it is lowered onto dense carpet. Is this a motor problem? ie motor is running too slow so as soon as the extra friction of running on dense carpet happens it triggers the safety device?

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  • aday712 Jun 01, 2009

    Thanks. I don't want to buy a new motor if that is not the problem (obviously!)



    The question is how does this cut-off switch work? ( the one that shuts off the beater bar if obstructed). My theory is that it works off engine rpm - so when this drops due to obstruction then it shuts the motor down.



    So in my case it seems that the motor under no load is beginning to 'die' and so is already running at too low a speed - so with the drag of running along tight piled carpet the rpm quickly drops further and reaches the critical level shutting the motor off.



    Is this explanation likely?

    Or could there be another way that the cutoff switch would work? necessitating replacing some part other than the motor?



    Alan Day

  • aday712 Jun 04, 2009

    The basic question is how does this cutoff switch work? 2 suggestions so far

    1 - motor problem - motor failing - rpm dropping - so resembling condition of obstructed beater bar
    2. Low voltage. Meaning house voltage is temporarily low? Or some circuitry inside is malfunctioning? In nay case how does low voltage explain the normal function ie how the switch cuts off the motor when beater obstructed?

    Any other ideas?

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The motor is having a problem.There might be two reasons...either the coils inside it got heated up which will be needing rewinding or you can buy a new motor or there r capacitors attached sometimes u can make a check on that also if that's gone Kaput.

Posted on Jun 04, 2009

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It seems like the motor needs replacing if its making the noise, repairs will be expensive.

Posted on Jun 01, 2009

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Sir this is not vaccum cleaner problem it is problem of low voltage

Posted on Jun 02, 2009

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Drive belt is slipping.

Remover cover from the bottom of the power head or base if upright style. Usually just 2 to 4 screws.

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http://geeksquad.fixya.com/ThreadView.aspx?prdid=0&thid=783793
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I am trying to change the belt on an Electrolux Model 1717 Upright Vacuum and I am having difficulty disassembling the vacuum to remove the beater bar and belt.
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http://electrolux.com/ Customer Service 1-800-896-9756
Electrolux Home Care Products – North America
P.O. Box 3900 Peoria, IL 61612
Thanks, Don the Vac Man
Go Ahead. Use Us.

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