Question about Porter Cable Air Tools & Compressors
My porter cable 200 psi 3 gal oil air compressor when I turned on the power ran only a few seconds sounding like it was laboring and now will not run at all. I checked the power to the outlet, good. I checked the oil reservoir, proper level. I checked the bleed valve, closed. What else should I check?
The curcuit breaker on the motor. Probably a little round button that's about the size of a screw head.
Posted on Jan 05, 2013
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Posted on Jan 02, 2017
ARE THE POINTS BURNT IN THE PRESSURE SWITCH? DO YOU HAVE A LEVER ON THE SWITCH SET TO ON OR AUTO? IF YOU THINK ITS THE SWITCH JUST BYPASS IT AND TIE THE WIRES TOGETHER TO SEE IF IT RUNS. BEWARE YOU HAVE NO PRESSURE PROTECTION EXCEPT POP-OFF VALVE. MOST P.O.S. COMPRESSORS LIKE PORTER CABLE HAVE 3500 RPM MOTORS AND HAVE A THERMAL RELEIF BUTTON ON THEM. JUST PUSH TO RESET. MAKE SURE YOUR WIRNG OR DROPCORD IS LARGE ENOUGH GAUGE. SMALL GAUGE DROPCORDS KILL COMPRESSORS.
Posted on Jan 27, 2009
The bleed valve is an unloader of sorts that allows the compressor to start with-out a load. It closes when the pressure in the airline reaches about 20-25lbs with good volume. If air volume is not sufficient, the valve will not close. To solve the problem lets do a few tests. A long cord will reduce power and reduce air volume. Try powering the compressor with-out extension cord. If bleed valve closes when you do not use a cord, the compressor is not getting enough voltage, use shorter cord of the 12 gauge quality and more hose to reach work. If valve still does not close, check for air leaks on all fittings including around pressure switch and drain valve with soapy water. Repair as necessary and retest. If no leaks were found, temporarily plug bleed valve port with screw/bolt and run compressor till set pressure cut-off while counting minuites/seconds. The compressor should fill and shut off within three minutes or so. If it takes an unusually long time to fill, then the reed valves /valve plate is worn and leaking pressure back into cylinger. Leaking valves will usually result in very hot discharge airline/air. Reinstall the bleed valve after test. Parts and partslist are available at www.toolpartsdirect.com . Good luck on the repair and email if you have other questions.
Posted on May 06, 2009
Replace check valve the piston is getting stuck sometimes alloying the air to leak all the way down till it comes back on
Posted on Jul 21, 2009
Sounds like one of the following three possibilities:
Too small of service to the unit... You need 20 amp and #12 wiring.
Too long extension cord with too much voltage drop.
The "unloader" is defective. This is a little valve that MAY be a part of the pressure switch that bleeds cylinder head pressure at shutdown to make starting easier. At shutdown you can usually hear it "exhale".
Posted on Sep 09, 2009
Testimonial: "Thanks Gives me good ideas to try."
Check the head gasket. Mine just did the same thing. Mine was blown between the two chambers on top. It's very thin right there. I went to the auto parts store and bought some gasket and made my own for about $6. It's up a working great...finally. BTW the gasket kit is on back order right now at Sear's parts website. It appears we aren't the only ones with the problem!
Posted on Jul 19, 2010
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