2002 won't cut off

by Allan
(New york)

Portor cable 2002 type 5 changed pressure switch and still won't cut off when it reaches pressure pops prv over and over

Comments for 2002 won't cut off

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May 17, 2017
Popping PRV
by: Bill

Hey Allan, thanks for taking the time to update us.

Yup. RTFM (loosely translated, read the blinking manual / label). We've all been there, buddy.

May 16, 2017
Problem solved
by: Allan

When pressure switch went bad I also changed prv but bought a 120 psi instead of a 200 psi so it kept popping. Replaced with 200psi now it works like it should. "Read lables carefully"

May 16, 2017
Pressure switch
by: Doug in s.d.ca.

Yeah - The idea there is primarily to rule out everything but the switch. Or, worst case, find that a short exists in the wiring AT the switch.

Anyway, I hope we get a ruling from the OP soon.

May 15, 2017
Short somewhere else
by: Bill

Yeah, I wondered about that, Doug.

But, since there's only the power cord to the ON/OFF switch, a short there would not affect the running of the compressor if the tank pressure had reached cut out, and the pressure switch was working.

Or, if a short on the motor side, if the pressure switch had reached cut out and stopped power flow to the motor circuit, a short there could not continue to power the motor.

I like your suggestion as to how to further diagnose the problem. Thanks for that.

May 15, 2017
2002 won't cut off
by: Doug in s.d.ca.

A bad pressure switch is certainly a possibility.

Did you change it to try to solve this problem?

Either way, unplug it and disconnect either wire to the pressure switch. Tape it off or otherwise ensure it's not touching anything. Plug it in. Turn it on. Is it running? If so, you have a short somewhere else.

If it does not run, then try the same thing with the other wire to the switch. Reconnect the other one.

May 14, 2017
Porter Cable won't quite
by: Bill

Now that's really odd, Allan. I don't see how, if the pressure switch you installed has the correct cut in and cut out that it won't cut the power to the motor when the cut out pressure is reached.

There's only two wires on the switch, one from the compressor ON/OFF and the other to the motor circuit.

I can only surmise that if the cut out pressure of the new switch is correct, then that new switch isn't working.

Sorry, I can't see it being anything else.

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