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My portable air compressor turns on but wont turn

My portable air compressor turns on but wont kick off,keeps running and when i manually turn it off it wont turn back on

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  • chad bigger Mar 15, 2009

    i looked and it doesnt have a relief valve at all, and i know what im looking at, i bet thats my prob, thanks i will let you know. chad

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Check the operation of the relief valve. This is usually located near the regulator and gauge and has a small ring that you fit your finger in and pull outward. When you do so, compressed air should be released. If this is stuck or cant be released, there is your problem. It is quite dangerous to let the tank reach pressures beyond that allowed by the relief gauge. Usually 120-150 PSI.

Posted on Mar 07, 2009

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Check the rating tag on the safety valve that is letting the pressure off of the tank. I'm pretty sure that it is less than the 200 psi that you are seeing.
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Best regards, --W/D--

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