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sweep motor tripping

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  • sweep motor tripping

    I have a machine that the sweep motor trips about 2 to 3 times a day. Replaced with a known working motor still does it. Any ideas??

  • #2
    Re: sweep motor tripping

    If it's just the stator that's been replaced, more than likely it's in the centrifugal mechanism. The frisbee/springy thing on the rotor shaft of the gearbox. (assuming Westinghouse/A.O. Smith here).

    Please post type of motors in use there.
    "Where are we going, and why are we in a hand basket?"

    --Kat

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    • #3
      Re: sweep motor tripping

      I have replace the whole motor and gearbox with a working one.

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      • #4
        Re: sweep motor tripping

        Hows 'bout bad bearing on the sweep driveshaft, bad rod end, bad pillow block or torque tube end, worn bushings &/or pin in the sweep arms, or sweep dragging on the flat gutter?

        C

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        • #5
          Re: sweep motor tripping

          ...or maybe cruddy S points, a weak capacitor, or a poor connection in the plug? Tried running it off the table plug? Is there a big arc in the motor &/or the contact when it starts? Tried a different chassis on this machine?
          These are areas I'd look at.

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          • #6
            Re: sweep motor tripping

            i would also check for burned/bad pins, connectors in the c-1 plug on the chassis side and the machine side- this can also cause an intermittent problem like that

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            • #7
              Re: sweep motor tripping

              i would also check for burned/bad pins, connectors in the c-1 plug on the chassis side and the machine side- this can also cause an intermittent problem like that

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              • #8
                Re: sweep motor tripping

                ok i don't know how that got up there twice

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                • #9
                  Re: sweep motor tripping

                  Capacitors (as already mentioned) would be my first thought. Check them out
                  All I want in life is to turn wrenches and climb around pinsetters/pinspotters again :/

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                  • #10
                    Re: sweep motor tripping

                    How is the best way to check the capacitors?

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                    • #11
                      Re: sweep motor tripping

                      To test a capacitor, remove the connection from one terminal and take a resistance reading with a volt-ohm meter. Connect the meter and wait approximately one minute for the capacitor to charge up. A reading of 50,000 ohms or more indicates a good capacitor. A reading of zero ohms indicates a shorted capacitor. No reading indicates an open capacitor.
                      A shorted capacitor in a sweep or table motor will prevent the electrical brake from operating causing the motor to coast.
                      An open capacitor in a sweep or table will prevent the motor from starting. [img]/content/btubb/images/%%GRAEMLIN_URL%%/laugh.gif[/img] [img]/content/btubb/images/%%GRAEMLIN_URL%%/wink.gif[/img]
                      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

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                      • #12
                        Re: sweep motor tripping

                        ARE YOU USING AN EXTERNAL MOTOR START SWITCH OR ARE YOU USING THE INTERNAL SWITCH WITH THE CENT. MECH. ? DOES THE MOTOR OVER HEAT WHEN IT TRIPS

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                        • #13
                          Re: sweep motor tripping

                          Well since ya changed the motor, its not a motor problem. Most like likely the upper or lower sweep contacts or a capacitor going bad-CSM 1 or 2 or both. Could also be a mechanical bind somewhere also. We have a tool that I made up out of an old Proshop handheld finger and thumbhole sander, that I made a motor crank fitting to put on it to check for mechanical binds without having to hand crank through from 0 to 0 degrees. Can only be used with machine unplugged though. We blew alot of capacitors out last year and started converting to the new siemens enclosed T and S relays. They sure seem to be good relays. No failures yet in 8 months now and no blown caps yet either.

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