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.

Porter Cable C2002 oil free air compressor
Porter Cable C2002 oil free air compressor

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

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C2002 won’t stop running
by: Bill

Does it run until it blows off the PRV Jim?

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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.

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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?


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