My CP compressor won't start when cold

by Robert Argiro
(Kirkville, NY)

It turns over very slowly and then trips the breaker. I have to shut it off and then wait for the click and retry several times before it eventually speeds up and starts, Any ideas seems like there is a load on it but I have tried two brand new units with same results.


thanks, Bob
________________
Bob, you need to visit the troubleshooting pages and read the one about cold weather and air compressors.

Like any lubed equipment, the oil in air compressors become sludgy when it's cold, and that's adding load to your compressor motor.

If the compressor power supply is marginal, as many are, that's why your compressor is popping breakers when it's trying to start when it is cold.

Bill

Comments for My CP compressor won't start when cold

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May 23, 2014
Similar problem solved using a different outlet
by: Anonymous

I too have a Harbor Freight compressor that wouldn't start when cold without repeatedly popping its reset switch. I moved the compressor to another branch circuit, and it fired right up. Both circuits are 15A, but there are several other appliances on the first circuit, and I think there just wasn't enough juice left for the compressor. (Both outlets are outdoors, so temperature is not a factor.)

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compressor kicks reset

by dan
(Dry ridge ky)

I bought a 2hp 4 gal twin air compressor from harbor freight about a year or two ago now it pumps about 40 pounds and kicks reset. Is the reset bad? if so where do I get one. I have not used this compressor very much.
________________
The reset you refer to is quite likely the thermal overload, and if it is kicking off then your motor is overheating.

Dan, there are lots of reasons why this might be happeing to your Central Pneumatic air compressor, and most of them are referred to in the troubleshooting section. Access it from the navigation bar, and read the pages about why this happens. There are some checks there for you too.

Post a comment here if you check everything noted on those pages and still have a problem.

Cheers,

Bill

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How much oil in a 8gal, 2HP Central Pneumatic Air Compressor

by Jose Valdez
(San Antonio, TX.)

Used air compressor I just received. I am trying to put oil but it does not fill the tank. I cannot see any oil through the clear marker. I have given it several minutes but it does not seem to fill. If I turn it on it spills the oil out of the plug on top. What should I try to do. Any help is appreciated. Thanks.

Jose

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Jan 27, 2014
oil
by: Doug in s.d.ca

If you don't already have the manual, look at the HF site and get one.
There are at least two versions, hopefully one of them is what you have.
From your description, I suspect you may have it overfilled.
Try draining the oil and refill very slowly. Most of these things only use a pint or so.

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Plastic Fan Needed for central pneumatic 95386

by KEN
(Warren oh 44483)


I have a central pneumatic 2-HP-8GAL.Mod-#95386
and im in hopes that someone may have the plastic cooling fan
on hand in there pile of CP compressors.

Many Thanks For Your Time,
KEN in warren oh.44483

KKennyh1@aol.com.-----------Of corse CP says part not
available.

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Feb 16, 2014
Re:Plastic fan
by: Ken

All the fins were broken off at the curled ends and I used epoxy to repair them,then I used floss handles as a back up (thanks to a critter depositing a walnut inside the motor housing)its working ok now but I don't trust it.so now im looking for one just in case it flys apart.

Thanks Ken

Feb 16, 2014
fan
by: Doug in s.d.ca

Is that one broken? Looks like it's in one piece.

If it is just slipping, I'd try roughing up the shaft a bit and epoxy it. Even Elmer's might work.

Otherwise, more specifics?

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