Question about Craftsman 3 gal. Air Compressor, 1.5 hp, Horizontal k

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My Compressor wont restart.

I may have used a faulty extension cord. How do I fix my Compressor. When I plug it up the motor doesn't start up.

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  • dflo64 Apr 09, 2009

    I've got a craftsman 3 gallon 1.5 hp electric compressor. Worked fine up to 40-60 psi, while using it . it started buzzing as if it was trying to cycle. I released the air pressure and turned it on again. It will not run to build pressure it just makes a buzzing sound. I also checked the sight glass for oil, it looks like it maybe low. Could this be the problem?

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Start capacitor is probably fried

Posted on Mar 25, 2009

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You can try plugging the compressor directly into the wall and see if it refills with air without trippiing the circuit breaker. Using an extension cord should be done with a #12 or #10 wire gage type, smaller type will cause a power loss in the cord and will cause the compressor motor to trip the circuit breaker.
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This may seem a bit simplistic but how are you hooked up to the outlet? Are you using an extension cord or is the compressor plugged in only using the supplied power cord?
If you are using an extension cord then you are going to pop the breaker every time you use it. Infact the manual states

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If your not using an extension cord and it's ran in the past where it's plugged in now then check the circuit because there must be new draw on the breaker

You said the breaker is 20amp. correct? The compressor should be run on a breaker dedicated to the compressor only.

Even though you should use a longer hose instead of a longer power cord you can get away with it. But forget about wire gauge size you need to think wire diameter. The extension cord I made for my compressor is approximately 3/4" thick. That is the only way I was able to use an extension cord on mine. A good place to get that size cable is a boat supply store. The cable used for shore power on boats works.
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