Sears Craftsman 6 horse 60 gallon compressor won't hold...

I have a Sears Craftsman 6 horse 60 gallon compressor won't hold pressure. It runs but i will not hold pressure while I'm using it


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Bill says...

My first thought is that your air using appliance is using more air than the compressor can produce.

A 6HP compressor motor should generate around 24 CFM of compressed air at about 90 PSI.

What air tool are you using, and what is it's demand in terms of CFM and pressure usage?

Thanks,

Bill

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Sep 10, 2010
CFM
by: RICK

I HAVE A RIGID COMPRESSOR AND I THINK I'M HAVIVNG
THE SAME PROBLEM GREG IS HAVING,WHEN USING TOOLS, THE COMRESSOR GIVES ONE BURST OF AIR STARTING THE TOOL FOR A FEW SECONDS, AIR REBUILDS IN LINE WHEN TRIGGER IS RELEASED.

Aug 15, 2010
Air pressure or volume
by: greg

The compressor is adequet size... i used to have no problem running tools... sanders, ratchets etc.... filling a bike tire or blowing off my clothes... but as soon as i draw air the pressure or volume drops out... puzzled must be in the regulator???

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Hi Greg:

Still not much info here for me to help diagnose the problem. If I understand correctly, your compressor builds pressure to the cut out pressure level, and the tank is full of air at that pressure, right?

Is it taking longer for the air pressure in the tank to build to cut out pressure than normal?

Yes, it's possible that you have a regulator problem, but since a regulator reduces the air flow to the tool, and you say that the tank pressure drops very quickly as soon as you use a tool (an this didn't happen before), then, I rather think that you've got a "compressor won't build pressure" issue.

Follow the links on this page to see if this information helps.

http://www.about-air-compressors.com/compressor-will-not-build-pressure.html

Bill


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Sears air compressor only fills to 25PSI

Why does my sears air compressor only fill to 25 lbs?






Bill ponders...

Howdy, and how's things in Parry Sound?

A bit more information would be useful.

What is the motor HP of the unit?

When the pressure in the tank gets to 25 PSI, does the compressor stop or does it keep running?

Does it continue to run after reaching 25 PSI and the air pressure doesn't increase?

If you could give me a bit more information, I would be pleased to try and help you pinpoint the problem.

My initial response is to suggest, without having full information, that it might be your pressure switch that's causing the problem.

Give me some more info, OK?

Cheers,

Bill

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Aug 07, 2013
pressure drops off as soon as i start using a tool
by: larry k

I recently got this compressor from a friend, we hooked it up to 220 and plumbed it in. It builds pressure to 150psi in 60gal tank and motor shuts off. And as soon as i start using using my sander i get a burst of air then it slowly stops running my sander within 30seconds or so. I have to wait for compressor to build pressure again the switch turns on at 100psi and still wont keep up with usage.
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30 seconds of use by a sander is consuming a lot of compressed air, Larry.

What is the HP of your compressor, and what is the demand of compressed air - both PSI and CFM - for your sander?

It is possible that the regulator is wonky, though on the surface it sounds like your sander can use more air than your air compressor can deliver.

B.

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