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Reversing combo motor


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  • Reversing combo motor

    We have a Westinghouse combo motor that has all of the wires being the same color. When put on a machine, it starts running backwards. Which wires on the terminal board need to be reversed?
    Thanks for any input.

  • #2
    Combo Motors can't be reversed.
    Your windings are shot.

    All you can do is try and trace the wires from another combo
    If at first you don't succeed, try, try, again. Then quit. There's no use being a damn fool about it." -W.C.Fields


    • #3
      from the small pin the pin to the left should be leg from the thermal protect. Then you need an meter,set to omes,two wires should read about 4.1, the other two should read about 1.6. The two that read about 4.1 go on the other two pins that are not small. The other two wires that read about 1.6 goto the small pin and the center. Hope this helps


      • #4
        Start Winding 4.1 OHMS Red & Black or 1 & 4

        Run Winding 1.6 OHMS Yellow & White or 2 & 3
        If at first you don't succeed, try, try, again. Then quit. There's no use being a damn fool about it." -W.C.Fields


        • #5
          If you reverse the positions of the start wires it should run forward,like a westie backend. I have 2 westie combos that have both sets of wires black and red.
          70's MP/PBL/LBS,Q-Score
          Prolane Walker sport


          • #6
            Look close, aren't there numbers on those wires?
            This post is not an unpaid promotion of my business.


            • #7
              Originally posted by Ted View Post
              Look close, aren't there numbers on those wires?
              Yeah, 1-5????????????? Maybe it was the order they removed them or the order they first looked at each one or the order they wanted to install them on the terminal board!! They definately do not match the number on the terminal board.


              • #8
                ours used to be rewound locally.. and always ran backwards when put on a machine.
                By swapping the red and black wires with the ring terminals, from the winding where they connect on the board. This restored the correct rotation.

                if you swap the red and black from the plug, at the board end.. you'll run into trouble with your solid state switches.

                Having wires all the same colour doesnt help. but if you have the stator on the bench with the board on the right hand side, and the row of 3 terminal on the RH side we swap a wire from the middle terminal with a wire from the bottom terminal. But this may not be right for you if they have been rewound locally. So i do urge caution.


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