air leaks from the regulator when I turn the pressure down.

by bernie howse
(newfoundland )

Its a porter cable pancake compressor and not very old and has,nt been used all that much. But its been leaking for a while now and I don,t know what the problem would be ???????


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Bill says...

Bernie, if the air line to your tool from the compressor is charged with, say, 100 PSI air, when you turn the regulator down from that 100 PSI level to a lower setting, say 80 PSI, then the higher air pressure downstream of the air compressor will bleed back out of the regulator. This is called relieving, and is normal, but, it should stop after the downstream air reaches the new set point.

If air continues to bleed out of the relieving port on the air regulator, likely the internal seals (diaphragms) have failed, and it's time for a new regulator.

Cheers,

Bill

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Oct 23, 2011
compressor air leaks
by: Bernie

I guess that I might need a new regulator, Because it still leaks air still after the pressure gets down to where it should be and its always cutting in to rebuild pressure. Thank so much for your help.Bernie

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Yup, I agree. The regulator innards are consumables and they do wear out.

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Porter cable compressor keeps blowing 20 amp breakers

by justin
(keokuk iowa )

its a c2150 4gal compressor with a 1 hp motor it will run for awhile then just blow the breaker

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Bill says...

Justin, if the compressor starts without blowing the breaker, and then runs for a while, and then blows the breaker, what is happening with the compressor when the breaker pops? Has it reached cut out pressure?

What is the pressure in the tank when the breaker blows? Is it the same pressure every time?

Your compressor problem might be a pressure switch shorting out, or it might be the motor failing, I can't be certain with the info provided.

Cheers,

Bill

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Nov 05, 2010
I have the same exact issue
by: Glenn

I have a porter cable air compressor double stack that is doing the exact same thing. with no pressure on it, the compressor will fill to 140 PSI and shut off as normal. After I use it and the compressor kicks back on to fill back up it kicks the breaker. Any suggestions on what is causing this and how to fix it.

Thanks

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Glenn,

Wander over to the Valves page, and click the link to the Unloader Valve page. I think this may be what's ailing your machine, at least, it would be the first thing I would check.

Bill


Oct 01, 2010
compresser
by: Anonymous

the tank builkds to full pressure 140 psi the motor does get a little warm though

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When it gets to 140 PSI, does it blow the breaker when it shuts off, or when it tries to start, or at some other time?

Bill


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Porter Cable compressor will not build pressure

by Rich
(Lexington, SC)

I found (garbage picked) a Porter cable compressor model CPL6025, with pump model D22621, manf date 2-14-02. It appeared in good shape, so I took in home. It was holding about 60 lbs of pressure in the tank.

I checked the relief valve (pulled ring out) and it vented properly/easily. I checked the oil level, and it was clean and filled to the proper level.

I plugged it in (110 V) and turned it on. The compressor started ok, but I noticed it will not fill, and I feel big puffs of air from the top. It appears that the reed valves are rusted/broke.
Here are my questions: Is it a simple matter to replace the reeds? ($12 for four from Porter cable website). What else should I be looking at, or prudent to change while I'm in that area? Is their a dissambly procedure, and if so, where?
Thanks for your site...I will be passing this on to my DIY friends.

Rich

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Bill says....

Simple is based on your skills and capabilities, Rich. I cannot comment on those.

I would replace all valves and gaskets if I tore it down.

See my video on the AIR VIDEOS page about my $10 air compressor for some additional ideas if you decide not to fix it.

Cheers,

Bill

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new porter cable will not pressurize

by John
(NJ)

I'm new to air compressors. I just bought a new Porter Cable max 150 PSI compressor. I plugged it in and attached a nailer. I turned it on and I turned the dial to the max. It's been plugged in for 15 minutes and it's making a lot of noise... but the pressure is not building! what am I doing wrong?

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Bill says....

Making a lot of noise? What? Barking, mooing, thumping?

DIY compressors are loud as a norm, so the fact that yours is isn't surprising. What type of noise might be important, though.

Unplug the compressor. Open the tank drain and bleed any air in the tank down to zero PSI. Close the tank drain. Plug the compressor back in.

Does is start? Do you see any pressure build on the tank gauge?

Beside the pressure switch and operated by it will be a small valve. This is the unloader valve. While the compressor is running, NO air should be coming out of the bottom of this valve. Is there air coming out when the compressor is running. If so, read the pages on this site that relate to Check Valve and Unloader Valve for details.

Let us know what, if anything, this did to help, OK?

Bill

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Mar 03, 2011
original poster
by: Anonymous

I should have posted a follow up! I went back to the store and exchanged it, the one that I got was broken or needed to be adjusted somehow.
Thanks!

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