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Contactor replacement need wiring diagram for ckl36-1 contactor switch please

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  • yellowfast1 May 23, 2009

    This is a home unit goodman CKL36-1H, the contactor switch was taken out to be replaced. and there is two red wires two black wires and then the two wires from the thermostat and then the two lines in for the power. the switch taken out was a single pole and the one i have now is a two pole switch and i cant figure out were the wires go can you help me the single pole has a bridge on one side but the two pole doesn't so do i need to bridge this the person who took it apart cant be found and im lost on the wireing Thank you for any help you mite be able to give me Doni

  • yellowfast1 May 23, 2009

    im sorry but this is way over my head i need a easier way to under stand and i need to know were all of the wires go there is two red two blak and the two that come from thermostat some one els removed them and i dont know were to put them Thank You Doni

  • Dennis Boxerman May 11, 2010

    If this is a residential unit, please describe what is currently there. Should not be too dificult to do the fix.

  • Robert Moller
    Robert Moller May 11, 2010

    Compressor Contactor ?


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Onmost single-phase compressors with a single-pole contactor, there is a solidbar on one side of the contactor instead of having two contacts. One leg ofpower passes down the bar to the capacitor and to the run winding. It passesthrough the run winding of the compressor and from common back to thecontactor. It lands on the load side of the normally open contact of thecontactor. At off cycle, line voltage will be read from one side of thenormally open contact to the other: Line 1 on the line side and Line 2 on theload side via the windings.
Thecrankcase heater will be attached to the contactor with one leg on the loadside and one on the line side of the normally open contacts. At off cycle itwill have line voltage applied to it and will heat the crankcase. Once thecontactor is energized, both the line and load side of the normally opencontacts become one. Since you cannot feed a load with one line of power, thecrankcase heater will not work again until the contactor opens. This is asimple way to turn the crankcase heater off during the on cycle and to turn iton at the off cycle. Exercise caution when checking this type of setup becausepower is always present on the load side of the contactor.

Posted on May 23, 2009

  • Robert Moller
    Robert Moller May 23, 2009

    I was trying to explain why you need that contactor with the bar. During the off cycle it heats the oil in the compressor to prevent refrigerant flooding which will cause compressor damage.

    If you insist. The Power leads from the switch go to L1 and L2.

    The leads from the compressor go to T1 and T2. The thermostat wires go to the coil contacts on either side.


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