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craftsman compressor

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bubblegum
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2019/05/17 20:51:36 (permalink)
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craftsman compressor

model # 919167320 2hp 33 gallon   made in 2005.

compressor wont shut off so i was wondering whats up with it? I heard maybe a pressure switch but not sure. if anybody has had or knows about the reason i would appreciate it. 
Thanks Jim
post edited by bubblegum - 2019/05/17 20:54:39

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    AVB
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    Re: craftsman compressor 2019/05/18 07:45:01 (permalink)
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    First make sure the pressure switch is set in "AUTO" position. If in "RUN" it will not shut off.
     
    Now if it doesn't cycle in "AUTO" replace the pressure switch. Bad news here as the original style is no longer available and you need to substitute a suitable replacement. It will need for for air compressors with a pressure release valve or the motor will not be able to start up when the compressor pump is pressurized.
    bubblegum
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    Re: craftsman compressor 2019/05/18 15:50:19 (permalink)
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    ok thanks for the info... now that being said, i dont understand that last part.
     "It will need for for air compressors with a pressure release valve or the motor will not be able to start up when the compressor pump is pressurized".
    what is for for ?
    post edited by bubblegum - 2019/05/18 15:51:45
    AVB
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    Re: craftsman compressor 2019/05/18 17:18:23 (permalink)
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    bubblegum
    ok thanks for the info... now that being said, i dont understand that last part.
     "It will need for for air compressors with a pressure release valve or the motor will not be able to start up when the compressor pump is pressurized".
    what is for for ?


    Pressure Release Valve: The pressure release valve located on the side of the pressure switch, is designed to automatically release compressed air from the compressor head and the outlet tube when the air compressor reaches "cut-out" pressure or is shut off. The pressure release valve allows the motor to restart freely. When the motor stops running, air will be heard escaping from this valve for a few seconds. No air should be heard leaking when the motor is running or after the unit reaches "cut-out" pressure.
     
    If you don't relieve this via the cutoff switch (relay) then you either burn up your motor or simply will much larger motor then the 2 HP you have, more like 5+hp.
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