How do i fix the air compressor from blowing fuses when starting?

Compressor has work fine for 15 year.


Now when you try starting it, it blows fuse.

I've checked the check valve and it works.

I've even bypassed the pressure switch and it still blows. It's wired for 120 volt but it can be wired for 240 volts.

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Bill says...

Casey, it's blowing the fuse / popping the breaker either because you have an electrical fault, or the motor is drawing too many amps on start up.

You bypassed the pressure switch and still the fuse blows.

This suggests to me a motor issue. Can you pull the motor and take it to an electrical motor rebuild shop for a test?

Cheers,

Bill

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Jun 10, 2010
Took motor to local repair shop
by: Casey

Went to local repair shop. Told them I thought one of the capacitors were bad. He took them both off and tested them. One of them was bad. He replaced it with a new one. Ten minutes and %23.00 later I was back home with a compressor the was working once again.

Thanks very much Bill..............

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Makes me feel good. Thanks for letting me know, Casey!

B.


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Compressor dies after running for about 20 seconds needle acts like the switch got shut off and then restes after about 20 or so seconds

by samuel miller
(wilbur, Wa. usa)

The compressor starts fine and runs for around 20 to 30 seconds and acts like someone shut the key off because the volt gauge goes to zero and resets istelf after may 30 seconds. It dies everythime for some reason.

It's a Sullair,, sully screw 150 unit. rand like a chakp for about 5 hours and won't stay running 2 days later.

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Bill says...

Hello Samuel Miller. Thanks for writing in.

Are you using a multi-meter to check current? What do you mean by the "volt gauge"?

When the compressor is running for that short time, is there pressure being added to the tank?

My first guess is that you've got a pressure switch failure, but I can't be certain (yeah, like I ever am...!) since I don't have enough info.

Cheers, and sorry that your compressor isn't "good to go".

Bill

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