Question about Dewalt 2 Hp 4 GAL Air Compressor
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Posted on Jan 02, 2017
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
Sounds like it isn't getting oil on the bearings. Take it apart yourself,after you get a diagram of it and find a parts source.
Posted on Mar 22, 2010
The short answer unfortunately is no. The internal motor that drives this compressor requires 220 and will not work properly with 110. Your only option would be to replace the motor with one compatible with 110. The cost of that would approximate a major portion of a replacement unit.
Sorry about the bad news.
Posted on Jul 08, 2010
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