CPF6025VP Blowing a breaker?

by Joe Cook
(Duncanville, TX)

Porter Cable CPF6025VP air compressor - http://www.about-air-compressors.com

Porter Cable CPF6025VP air compressor - http://www.about-air-compressors.com

I have a 6 hp Porter Cable, model # CPF6025VP that I have been using connected to the same outlet for 12 years with no problems.


Now, it recently started growling and then blowing the breaker.

I plugged it directly into the wall socket and it appeared that it would work there, but now it is blowing the breaker again. Any suggestions?
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Joe, first off, I am astonished that any manufacturer says that you can run a 6 HP electric motor on 120 Volts, as the specs (I checked) seem to indicate for this model of Porter Cable air compressor.

That it starts at all, even with no air in the tank in a nice and dry, warm (not hot) environment is amazing.

If you have a moment, wander over to the Sitemap page under Electrical, and have a read of the page compressor power supply to see what I'm talking about.

Having ranted thusly :-) I suspect that it won't take very much of a backload or change in operating conditions for your compressor to exhibit the symptoms your Porter Cable air compressor is.

Troubleshooting this compressor may be as simple as, before you start it again, emptying the tank completely. Then try again. If it starts with an empty tank and runs to cut out, it suggests that the problem might be your unloader valve. Please check that out (see unloader valve page for details).

If this is not the problem, please post a comment here.

Cheers,

Bill

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Apr 10, 2014
No start, hums and blown breaker problem solved.
by: Anonymous

I have a Porter Cable 26 gal vertical with 2hp? no oil type of motor. It would not start. It would hum and trip the breaker. Removed cover shroud to motor and discovered that one of the wires to the start capacitor near the spade connector was broken. The white wire to the run capacitor was almost broken. Vibration had evidently caused this. Stripped 1/4" from each wire and crimped on new plastic covered female spade connectors using pieces of shrink tubing to reinforce the wires near the connectors. Problem solved.
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Thank you for this update. Quite often a humming compressor motor indicates a start capacitor problem. That it may be the wires that are causing that and they need to be checked is real good advice.

Cheers,

B.

Dec 18, 2013
Compressor blows breaker when pumping back up
by: George

I have a CPF6025VP with very low hrs. The compressor pumps up fine to 130 psi. However, when air use bleeds down and pump tries to kick in, the motor hums, turns slowly and won't pump at all, unless you bleed the tank almost all of the way down. If left humming, it throws the breaker. Any thoughts??
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Sure George. Have a read of the troubleshootin page about why air compressors don't start, and then check out your unloader valve and if not that, maybe the start cap.

B.

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20 Gal. C5101 compressor blows breaker, wont start.

by terry
(G.P.)

Ive had this compressor for about 5 years always plugged into same plug in my garage. recently it just quit.i emptied tank and will not start up again.just hummms and then blows breaker.
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If you are getting that humming sound and the tank is empty, to me that sounds like your start capacitor has failed, Terry.

See the page on this site about how to test it. See the store for replacement caps.

Bill

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porter cable air compressor blows breaker at panel

porter cable air compressor model #cpf23400s-2,runs fine stops when reaches set prussure and holds air,but when you start to use it and air starts going down, compressor trys to turn on, but blows breaker.i just replaced pressure switch,no help.

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Bill says...

When replacing the pressure switch, did you ensure that the unloader valve, which is commonly operated by that switch, was working?

If the unloader doesn't do it's job, there is compressed air trapped over the piston that makes the motor work overly hard to start. In trying to do so, the motor draws more than the electric circuit can supply, and the breaker pops.

Let us know, would you?

Cheers,

Bill

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Model c 2150 sat unused for 2 yrs now will not run

by al
(texas)

c 2150 used about 30 hrs no problems.Sat unused in garage for2 yrs.plugged in to use and will not start up.Have checked it over and cant find any reason it wont start up.
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There are quite a few things to check, when an air compressor won't start, Al.

The page with those checks is found under Troubleshooting on the sitemap page.

Please have a look at that page, do the checks, and if you are still stuck, post a comment here indicating what you did and what you found, and we'll press on.

Cheers,

Bill

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Porter Cable Pancake compressor and it will not start

by Jack
(Oxford, Mi, US)

When the unit is plugged in nothing happens. no click, no hum nothing. I was wondering of the Porter Cable pancake units have a internal circuit breaker? The unit worked fine 6 months ago and it has sat around doing nothing during hte six months. ther was no air left in the tank.

All of the outlets work fine. I have not yet take the covers off to see if ther eis a switch or a cable connection issue.

Any ideas would help out alot.

Thanks
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Jack, if there is not air in the tank then there should be power flowing through the pressure switch to the motor circuit when the compressor is plugged in and turned on.

You don't say what model of Porter Cable air compressor you have.

Regardless, if power is not getting to the motor it cannot start, and the fact that it isn't making any noise at all when you power it up suggests that power is not getting to the motor.

Check that, then update us here as a comment as to what you found or didn't find, if you would.

Cheers,

Bill

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