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Franklin combo motor


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  • Franklin combo motor

    anyone familiar with the Franklin combo motor sitting on a 82-90?

    The connector on the motor has 6 wires. labeled as follow:
    - ground
    - line
    - neutral
    - motor
    - motor forward
    - motor reverse

    This is my theory:
    the line-neutral circuit is the normal run winding
    the motor forward/motor reverse circuit with capacitor is the start winding parallel to the run winding.

    Am I right these motors have 2 startwindings? 1 to make the motor run forwards and one to run in reverse?
    There is only 1 startswitch in the motor that confuses me.
    There are 2 double contacted relays in the chassis for sweep operation
    someone ideas?

  • #2
    Re: Franklin combo motor

    Line (x) and the return (nil) run the main winding.

    (ct) and (x) are basically the same wire connected thru the klixon

    (ct) and (y) are the hot side of the start winding that is separated and connected by the reverse switch for the sweep and jumped inside the plug for the table.

    (z) is the neutral end of the start winding that runs in series with the start switch thru the reverse switch that connects it to the capacitors.

    When the reverse switch is actuated (ct) and (z) are connected to the hot side of the start winding and (y) is now neutral.

    The start switch breaks the connection on the neutral side of the start windings taking the capacitor and start windings out of the circuit when the motor gets to certain rpms.

    There is only one start winding in the circuit. When the motor is going forward, the hot and neutral are the same wires for the main and start windings. In reverse, the phase is flipped upside down in relation to the mains by swapping the hot and neutral for the start windings only.

    The reason for the double contacts in the chassis is to distribute the load because of the amps being pulled at start up.

    Hope this helps some.



    • #3
      Re: Franklin combo motor

      Made a picture, based on your description. Now I can explain the sweep reverse for myself. Thank you!


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