Derrell W Sloan
06-15-2007, 12:41 AM
I have a porter-cable 6hp/30 gallon/135psi compressor that is acting up. When I turn it on it seems to draw a lot of current (lights dim) and sometimes it trips the circuit breaker. I removed the check valve and cleaned it - it appears to be just fine. At first I thought it might not be opening and the compressor was getting a lot of back pressure - this doesn't seem to be the issue. When it does reach full pressure, if I drain some air out and try to turn it on again it immediately trips the circuit breaker. I can rotate the pump by hand, it turns freely. Now I am thinking it must be something electrical. I also noticed that it seems to get much hotter when it runs than it use to. Could this be caused by one of the start capacitors going bad? Any other ideas?