CLA Connect Open Forum

Bad contactor/motor SC40BC2

  • 1.  Bad contactor/motor SC40BC2

    Posted 02-12-2018 23:20
      |   view attached
    I had a customer call me and tell me that she satisfied the vend and pushed start and the machine filled with water and then it just counted down without any agitation. I had the same problem about a month ago and it was the breaker on the overload relay.
    I checked it and she enough it was tripped. so I checked the contactors by pushing them down.
    the front two worked for the clockwise or counterclockwise motion,  but when I pushed down the spin contactor I  only heard a click, it sounded like it was coming from the motor.
    i figured it was a bad contactor, purchased and installed it, only to have the same results, when I engage the the contactor, I only get a clicking sound from the motor.
    the question I have is, does this mean my motor is bad? Or is there other  components on the motor that might be bad, other than the motor.
    just seems strange..........any help would be great

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    scott badarak
    Store Owner/ Employee
    san diego CA
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  • 2.  RE: Bad contactor/motor SC40BC2

    Posted 02-13-2018 05:55
    Before you condemn the motor look closely at the connection. It could be burnt? That is what it sounds like to me.

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    Curt Harrington

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  • 3.  RE: Bad contactor/motor SC40BC2

    Posted 02-13-2018 09:16
    There was no sign of burnt wires when I replaced the contactor.
    is there a separate capacitor for the spin cycle on the motor?

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    scott badarak
    Store Owner/ Employee
    san diego CA
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  • 4.  RE: Bad contactor/motor SC40BC2

    Posted 02-13-2018 10:16
    Check the connections at the motor. I bet one of them is not making a good connection?

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    Curt Harrington

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  • 5.  RE: Bad contactor/motor SC40BC2

    Posted 02-13-2018 11:56
    Do you know how to use a meter?  Check that you have 220V coming in at the back of the washer.  Check leg 1 & 2, 1 & 3, 2&3.  Since you have replaced the relay I am guessing that is not the issue.  Keep us posted.

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    James DeLeo
    NY / NJ
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  • 6.  RE: Bad contactor/motor SC40BC2

    Posted 02-13-2018 13:28
    If the motor runs by engaging manually, then I would suggest that you look into the drain valve and drain system for clogs. If the water can not drain fast enough, it will put an extra load on the motor and trip the internal reset/breaker. Single phase machines are very sensitive to that type of overload and will eventually burn up the motor if you don't fix the real problem, such as not draining properly.
    Good Luck,
    Bruce Kusgen
    All Pro Laundry Equipment
    Lee's Summit MO

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    Bruce Kusgen
    All Pro Laundry Equipment / Owner and
    Distributor Employee
    Ed Brown Distributors
    Dallas TX
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  • 7.  RE: Bad contactor/motor SC40BC2

    Posted 02-13-2018 13:32
    If it doesn't run by engaging manually, then the motor could be bad, there could be a bad centrifugal switch or capacitor. Might need a qualified service tech for that one.
    Good Luck,
    Bruce Kusgen
    All Pro Laundry Equipment
    Lee's Summit MO

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    Bruce Kusgen
    Distributor Employee
    Ed Brown Distributors
    Dallas TX
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  • 8.  RE: Bad contactor/motor SC40BC2

    Posted 02-13-2018 20:28
    The first two contractors work properly When they're pressed  manually counterclockwise and clockwise,  then the third contactor when pressed only clicks, the clicking is coming from the motor.
     I guess my real question is,  can the motor be bad if it's working properly in the forward and reverse motion ?

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    scott badarak
    Store Owner/ Employee
    san diego CA
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  • 9.  RE: Bad contactor/motor SC40BC2

    Posted 02-13-2018 22:35
    Edited by DAVID CHAMLEE 02-14-2018 15:40
    Answer is YES
    The Wash winding is seperate from the Spin/Extract winding.
    Think of them as two seperate motors.

    One moves at low speed, One moves at high speed.
    Sometimes the windings short together inside the motor. That will cause major problems.

    The "clicking" is mysterious. I've never heard a "clicking"
    I have heard many a buzzing, and humming as the motor tries to turn.
    I have also heard "sparking" from the motor plug.

    The windings have seperate wires going to the relays, so checking the wiring at the motor plug, and along the wires between the motor and relays is and important first step in finding the problem.

    An experiment, if you feel comfortable with electricity;
    Press down the Wash relay/contactor that turns the drum in the Same Direction as the Extract is supposed to be turning.
    Now Quickly move to press the extract relay. (releasing the wash relay in the process)
    Does the motor seem to want to speed up? (but can't)
    Or does it drag down to zero?

    Can you turn the drum (from front, with door open) as the extract relay is being press? (2 people job, recommended. 2 fingers on the Drum Rim Only!)
    Can you turn the drum before the relay is pressed, and then it stops turning easily when relay is pressed? (2 people, 2 finger job, drum rim only)

    The above may indicate a bad motor.

    If the motor tries to slowly come up to speed, then a bad capacitor or start switch may be the culprit.
    As may a broken wire someplace.


    When replacing (or rewinding) a bad motor, check and replace all related components
    Relays, start switch, capacitors, should all be checked.

    "Something" made that motor go bad.

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    DAVID CHAMLEE
    Service Technician since 1986
    and sometimes Laundromat Owner
    CCR
    Santa Barbara, CA
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  • 10.  RE: Bad contactor/motor SC40BC2

    Posted 02-13-2018 23:46
    Excellent advice David thank you .
     The clicking sound I referred to, you can actually feel it on the motor when I'm behind the machine I can reach up and push in th extract  contactor with one hand and my other hand on top of the motor I can feel it clicking inside.

    i will try your advice with the drum and contactor spin test and I
    will let you know what happens.

    If this helps....the machine had a very slight high pitch sound that was very intermediate during extract the last few weeks.

    During extract the sound would come for a 5 seconds , then away for 30 seconds and then come back for 5 seconds.

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    Scott Badarak
    Multiple Store Owner
    San Diego Ca
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  • 11.  RE: Bad contactor/motor SC40BC2

    Posted 02-14-2018 15:39
    A high pitched squeal, or whine, during extract is usually telling you that the motor bearings are bad, and ready to seize up, or do something bad.
    Never ignore those bearing sounds, they just get more expensive to repair.


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    DAVID CHAMLEE
    Service Technician since 1986
    and sometimes Laundromat Owner
    CCR
    Santa Barbara, CA
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  • 12.  RE: Bad contactor/motor SC40BC2

    Posted 02-17-2018 14:19
    The motor should have a internal overload in it.. that could be bad.. You can bypass them

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    HENRY DANIELS
    Store Owner/ Employee
    AHOSKIE NC
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  • 13.  RE: Bad contactor/motor SC40BC2

    Posted 03-05-2018 22:25
    Problem solved. Fond a bad connection at the capacitor, must have come loose, then melted and lost connection.
    cut ant put new terminals on, been working great for two weeks. Saved me 900 for new motor.
    thank you for everyone's input.

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    scott badarak
    Store Owner/ Employee
    san diego CA
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