Porter Cable c2002 compressor short cycling

by Clarence McMahan
(Strafford, MO USA)

I have a porter cable 6-gallon pancake compressor c2002. As I'm using the tank, most of the time it works fine, kicking on at 120 lbs and off at 150 lbs. But, sometimes it will kick on at 120 lbs and off at 125 lbs, and keep cycling like that till I turn it off and dump some pressure (say to 90 lbs), then the compressor will start cycling normal again, only to start that short cycling again later on. Got any ideas??

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Apr 04, 2016
short cycle
by: Doug in s.d.ca

This is a new one...

It's likely a flakey pressure switch, which is a two-wire thing straight into the tank.

But before you change it, have you actually drained the tank of water?

If not, do that and retest.

If you did, then pull the cover and remove the pressure switch. If it's not dry, let it dry and then re-install. Retest.

If you're lucky it'll be working now. If not, replace the pressure switch.

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My C2002 porter cable compressor will not shut off

by Jim
(wisconsin)

I have a C2002 porter cable compressor that continues running, I have replaced the check valve, installed a regulator kit and replaced the pressure switch.

If I set the regulator at 80lbs it continues to run past 120 lbs never to shut off.

I always have pressure and it will hold its pressure forever.

When I use it I shut the compressor on and off manually.

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Dec 15, 2015
C2002 run on
by: Bill

if you pull on the PRV and air comes out, and you push it back in to stop the air flow, it's a pretty good bet that the PRV will open itself and dump air when the pressure gets to it's cracking point. That's it's purpose.

When you say "If I set the regulator at 80lbs it continues to run past 120 lbs never to shut off." the air regulator has no control over the On/Off of the compressor motor. It's the pressure switch that does that.

If your air compressor runs and the tank pressure bypasses the cut out setting of the pressure switch, it's typically a pressure switch failure or improper wiring that's causing that.

You say you've replaced the pressure switch. If it was working, when the tank pressure reached the cut out setting, the switch should trip off. If it's not the switch itself is likely the problem as long as the tank air pressure reaches and bypasses the pressure switch cut out setting. What is that for your switch, Jim?

Dec 15, 2015
My C2002 porter cable compressor will not shut off
by: Jim

Bill,
You asked me if the PRV blows off. No, because I haven't let it run that long for fear that the compressor could blow up and do damage or injury.

Dec 14, 2015
C2002 won't stop running
by: Bill

Does it run until it blows off the PRV Jim?

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Model C2002 keeps turning on and off

by Pat
(Ottawa Ontario)

Have a Porter Cable model C2002. Runs up to set pressure then turns off as it should. After a few seconds it starts again and runs for a few seconds and then shuts off. This sequence continues even though no air is being consumed. Compressor gets very hot when this is happening. There are no air leaks. Any suggestions and where can I source parts near Ottawa Ont? Thanks

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Apr 11, 2016
Just following
by: Doug in s.d.ca

Just following

Apr 11, 2016
Model C2002 turning on and off
by: Bill

As noted in the troubleshooting pages, this problem may indicate a bad pressure switch.

If it is the switch, removing it, and Googling replacement pressure switch for C2002 will find you on line sources. You remove the switch so you know what it looks like to acquire the new.

I don't know any bricks and mortar stores that sell C2002 parts.

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