Devilbiss PRFBC5525vp Blows breaker.
by Cary Honeywell
(Perth, Ontario, Canada)
I picked up a used Devilbiss PRFBC5525vp that likes to pop breakers. It starts up and runs for 2 seconds then crashes.
I replaced the capacitor in the motor hub (150 MF rather than the 135) and had the other capacitor checked at a shop. It was ok.
The motor turns by hand quite freely and even took the main outlet off to make sure there was air being pushed. What am I missing or is it that second capacitor?
_ Cary _
Hi there Cary...
I tried to find the specs and a photo of your Devilbiss PRFBC5525vp air compressor on line with no luck, so I'm kind of shooting in the dark here.
Often, but not always, the compressor symptoms you describe are related to power supply.
Good that you checked the caps and replaced one. See the page under troubleshooting for how to check the other one if you wish.
As a comment here, tell me about how you are getting power to your air compressor, and the amperage of the breaker your air compressor is plugged into.
devilbiss 432 rotation
on a devilbiss 432 and facing the flywheel which is the correcy rotation
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Devilbiss DF5020 blows the circuit breaker?
(Gilbert, AZ, USA)
Devilbiss air compressor (photo: www.devap.com)
My air compressor tries to start but ends up blowing the breaker if there is air in the tank. I figured that under 40 - 50 psi it starts the same way as when there is more air but ends up getting full power and runs fine. With anything over 50 psi the motor tries to start and seems to run, but with real low power, but ends up giving up and blowing the circuit breaker. Its a 5 hp 20 gallon devilbiss model# DF5020 compressor. What could this be?
Ninos, the first thing that comes to mind is whether or not your unloader valve is doing its job.
Please empty the tank of air, close the drain, start the compressor (hoping it does) and let it run up to cut out pressure.
If it gets there, monitor the unloader valve to be sure it is working properly. If not, that is likely your Devilbiss air compressor problem.
If that doesn't seem to be the problem, please add a comment here.
Devilbiss compressor hums for about five seconds then trips breaker
(winterhaven fl united states)
Compressor info: Devilbiss Charge Pro Air 60 gal tank. General Electric Motor 5KCP49SN2021Y...MO-3022-1 208-240 volt 15 amp,non reversable, thermal protected.
Compressor History: 7 yrs old and was used 30 hours a week for three yrs.
Since then only about two hrs a week every week. Has worked perfect except, i had to replace pressure switch once about three yrs ago and motor rebuilt about the same time due to a bearing starting to make some noise.
Compressor has now sat untouched for the past year.
Problem: Upon restarting the compressor started right up. Built up pressure untill pressure switch cut it off at correct 135psi setting.
when the pressure drop for switch to cut back on it did but, hummed a few seconds and trip breaker.
Things i have tryed and looked at: Check for water in tank ( even tho i do have an automatic unloader installed) and tank was free of water.
Next i drained the tank of all air pressure and checked oil which was ok. Next with the switch on compressor set to off i fliped breaker that was red, off then on then off then on agin. breaker felt fine with no loose play, so i left it on. Went back to compressor, fliped switch from off to auto on compressor...Same thing, hummed for a few seconds and triped breaker. The motor it self has a reset button but was not being affected. At that point i turned switch on compressor back off,and reset breaker agin. Went back to compressor and removed belt.
Turned switch on and the motor started and ran perfect with no noise. I then turned the flywheel by hand and found no problem. I put belt back on and checked tightness and straightness,was ok then tryed restart..same thing, hummed for a few seconds and triped breaker. The only other thing i can think of is i did was replace the breaker with the same size as old. Same problem. The compressor is and always has been on its on dedicated circuit. Any help would be great. Thanks (hope i havent typed to much for you to read, i'm 70 yr old and do not type to good)Jerry...
Good typing, and good information to help me help you, Jerry.
What I think you have is a failed start capacitor. See the page on this site about how to check, and let us know as a comment here if that was the problem.