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compressor motor

Discussion in 'Troubleshooting and Repair' started by em are, May 7, 2014.

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  1. em are

    em are

    1
    0
    May 7, 2014
    I have a small oilless piston type air compressor which I am trying to repair. When turned on only the cooling fan runs. I bypassed a circuit board, which the power was routed thru, and applied power directly to the motor. When power was applied the motor oscillates but does not rotate. Does the circuit board control the current to the motor to allow rotation and if so can it be tested?
     
  2. Electric Al

    Electric Al

    85
    7
    Jan 16, 2014
    I would get in touch with the manufacturer , and maybe they can troubleshoot it for you !
     
  3. Sinewave

    Sinewave

    129
    2
    Feb 15, 2013
    Could be the starting capacitor. Though most of the cooling fans run off the motor shaft directly. But you could try it again an using a pencil, give the motor a flick in the direction of rotation. It it runs, then the capacitor is faulty.
     
  4. elebish

    elebish

    177
    12
    Aug 16, 2013
    Sounds like a bad start capacitor or a bad winding in the motor. Ed.
     
  5. shrtrnd

    shrtrnd

    3,826
    527
    Jan 15, 2010
    How long has the motor been out of service before you got it. You don't have any seized bearings do you?
     
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