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Rash of interlocks

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  • Rash of interlocks

    As of this week I am having a rash of interlocks developing throughout the house. I have been going to each lane that has had a problem and adjusted the sweep and table switches to correct them. Is this something that I should expect to run rampant throughout the house?

  • #2
    Re: Rash of interlocks

    No.

    Check C1 pins and socket, contactors in the chassis, and your problems will go away.

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    • #3
      Re: Rash of interlocks

      first culprit would be sweep contactors. particularly if you have a certain vendors AB, or GE contactors.

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      • #4
        Re: Rash of interlocks

        Sounds like you’re on the right track adjusting the cam switches first. Very important the sweep and table stop where they are supposed to.

        The sweep stopping properly at first guard is usually the most important. If you can’t achieve this with cam adjustments so the sweep stops dead and consistent, you got coasting problems.

        Most common coasting problems usually caused by:

        Lower contacts (sweep/ table contactors) bad
        Burnt (or loose)C1 pins
        Weak or bad motor capacitors
        Loose gearbox (or worn brushes for National motors)
        Sticking centrifugal mechanisms
        Cam switches going bad
        Bad wire in motor plug

        Triac

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        • #5
          Re: Rash of interlocks

          Cams and contacts are our biggest culprits for interlocks. 99/100 times when the cams get adjusted and new contacts are installed interlocks are byebye
          All I want in life is to turn wrenches and climb around pinsetters/pinspotters again :/

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          • #6
            Re: Rash of interlocks

            Are they Natinal motors? if so don't forget to check the frictional braking of the motor, they have carbon brushes to help it to brake to stop the costing. That is if your problem is costing.
            There is always more to life, but would someone tell me what it is!

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            • #7
              Re: Rash of interlocks

              What kind of chassis are you running? [img]/content/btubb/images/%%GRAEMLIN_URL%%/confused.gif[/img]
              I've had enough of hope & chains.

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              • #8
                Re: Rash of interlocks

                The rest of the story... elco chassis with single board conversion. General Electric motors with the centrifical switch bypassed by a start relay. Found one lane to basically come down to a start relay that was mildly burnt up, causing motor to coast a little bit. Other lane that I was having problems with I replaced the sweep shaft, both cams, as well as the start relay. Not sure which part on the sweep replacement fixed the problem, but sweep now comes to a dead stop at all guards and at zero.

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                • #9
                  Re: Rash of interlocks

                  Glad to here that you got it fixed. I hate when I have a continuos interlocking problem.
                  There is always more to life, but would someone tell me what it is!

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                  • #10
                    Re: Rash of interlocks

                    Well done GPPL mech.
                    Maister

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