My compressor fills up fine but when it goes to refill ...

My compressor fills up fine but when it goes to refill its self the motor turns on then turns off. I let it sit for a little while then it works.

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Bill says...

Hello there. Yes, this is a weird one!

When your compressor has been sitting unused and you plug it in or switch it on, it starts and runs fine up to cut out pressure. Then, when you have used some air to the cut in pressure point, your pressure switch trips, the motor starts, then stops, and you wait for a while, and then it starts again?

I need a bit more info to try and help;

~ How long from the motor turn on to the motor turn off?
~ How long do you wait before the compressor starts properly?
~ When the compressor reaches normal cut-out pressure, do you hear it unload?
~ Can you feel the motor to determine if it's excessively hot after filling the tank the first time?
~ How does the motor shut off? Does the pressure switch trip again, or is it still calling for air and the motor just stops?

It might be a pressure switch issue, but I'm not absolutely confident at this time. If the motor gets too hot, it might be a thermal overload with an auto reset issue.

Cheers,

Bill