I keep blowing the breaker when i turn it on

When i turn on the compressor the breaker blows.


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Bill says...

To eliminate the most common cause of this happening to an air compressor, please unplug it, drain all the air from the tank, then plug it in / start it.

What happens now?

Please post a comment here with your answer so I can follow our discussion.

Cheers,

Bill

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Apr 23, 2013
919-165120 trips breaker after reaching 90 psi
by: Luis

Bill, I plug the 919-165120 air compressor to a dedicated outlet for washing machine. Motor works fine but trips when it reaches 90 psi.

Would it pose a danger if I use the compressor continously even when the switch is on auto all the time?

I use the comp for light automotive jobs. Any thoughts is highly appreciated.
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Luis, one of the reasons why it might trip out at 90 PSI is that your pressure switch is shorting out at that pressure.

If your air compressor is 100% duty cycle rated, you can run it for longer periods of time before it overheats and shuts off on thermal.

If the compressor motor is blowing a breaker regularly at 90 PSI, if it were mine, I wouldn't use it until it is repaired as if the breaker is popping due to a short, you have the ingredients of a fire happening.

I'd get it fixed first.

Bill


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Craftsman 5 HP model 919165250 is blowing breaker after a few seconds of running

by Steve
(Sinclairville, NY, USA)

Craftsman 5 HP model 919165250 is blowing breaker after a few seconds of running

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Bill says...

Steve, my first thought is that your compressor problem is power related. You may not have enough juice in the lines to the compressor if other appliances are pulling power at the same time, or you are using an extension cord that is too small to carry the power needed.

More likely though, if the former are not the case, you may have a run capacitor issue. See info on that linked from Troubleshooting on the site map page.

Cheers,

Bill

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Craftsman - Compressor seems like it wants to start, but breaker kicks in and shuts it off

by Noel Ortiz
(Tulare, Ca. 93274)

I noticed a little nit of smoke coming where the regulator is housed. I have a craftsman electrical air compressor rated 120/250. I got it at yard sale and took in to get repaired and I can remember how many gallons it is. I want to say it was a 22 gallon.

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Bill says...

Hello Noel. My first check is always this. Unplug it or shut the air compressor off. Drain the tank to zero. Close the drain and try to start the air compressor.

Also, please make sure you have clean power and no extension cord.

Anything different?

Please post your answer as a comment here so I can follow the thread.

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Compressor throws breaker as soon as I plug it in

Just as soon as I plug it in it bogs down for a second and throws breaker. Just all of a sudden started.

30 gal 6 hp upright craftsman
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Assuming no change in the power supply which means that means that other power using devices are pulling power from the same circuit that were not before, Michael?

Does this happen if the air tank on the compressor is empty, too? Good time to test the PRV by using it to blow down the tank.

Please post a comment here with your response.

Cheers,

Bill


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