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Capacitors Blowing Up

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  • Capacitors Blowing Up

    I am having a problem with a pinsetter blowing out a sweep capacitor, I have now changed out the sweep motor(General Electric) and the machine chassis(Omega-tek upgraded five board). I am scratching my head so hard that i'm about to draw blood, if anyone has any suggestions as to what can be causing this. My last bit of info on this is that I had another machine that was blowing up caps. and found that the allen bradley contactor had lost the screw that attaches the upper contacts to the mechanism. This Chassis did have an allen bradley contactor as well.

  • #2
    Re: Capacitors Blowing Up

    caps generally only blow up when it is tying to start and stop a motor at the same time. 99% of time its the sweep contacts in chassis, particularly if you have a certain Vendors AB contacts. only other thing i could think you'd be a dropped screw in the wireway or somethin shorting the capacitor wires. maybe the C1 plug is cracked letting wires jump current.

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    • #3
      Re: Capacitors Blowing Up

      With the chassis & motor both being taken out of the picture. Only thing left is Wire way & C1 plug.

      Start pulling the covers !!
      Even a old dog can bury a bone

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      • #4
        Re: Capacitors Blowing Up

        Originally posted by GPPLmech:
        I am having a problem with a pinsetter blowing out a sweep capacitor, I have now changed out the sweep motor(General Electric) and the machine chassis(Omega-tek upgraded five board). I am scratching my head so hard that i'm about to draw blood, if anyone has any suggestions as to what can be causing this. My last bit of info on this is that I had another machine that was blowing up caps. and found that the allen bradley contactor had lost the screw that attaches the upper contacts to the mechanism. This Chassis did have an allen bradley contactor as well.
        <font size="2" face="Verdana, Helvetica, sans-serif">If it is an AB contactor, check the screw in the lower set of contacts. If it is loose or missing your motor is trying to start/stop at the same time. I've had a few of my caps to blow for this reason.

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        • #5
          Re: Capacitors Blowing Up

          If I read your post right......you said you switched chassis and motor ?????? Yet the problem remained with the machne ??
          Even a old dog can bury a bone

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          • #6
            Re: Capacitors Blowing Up

            My first check would be the machine side C1, check for cracks as mentioned and any burned pins while you're at it
            All I want in life is to turn wrenches and climb around pinsetters/pinspotters again :/

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            • #7
              Re: Capacitors Blowing Up

              Did you change both or just one cap.?somtimes the caps blow if one has gone bad and the other one takes the load of both. Then after a while it will go "Kabluoee". to check disconect the wires and grab your ohm meter, set it to the highest scale setting, it should read slowly but stedly go up to 50,000 ohm. If not you have a bad cap.
              There is always more to life, but would someone tell me what it is!

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              • #8
                Re: Capacitors Blowing Up

                yes i go along with coors,is motor ok on another machine and is chassis good on another machine.is another chassis good on the problem machine.
                good luck.
                maister

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                • #9
                  Re: Capacitors Blowing Up

                  Wound up finding a small "nut" in amongst the terminal strips to the sweep wiring. Thanks for all the help.

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                  • #10
                    Re: Capacitors Blowing Up

                    just to let you know. I had the same problem and it was a bad sweep reverse switch.

                    Comment

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