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Help with compressor
I'm sure this has been done to death but my 20 gallon horizontal, cast
iron, belt drive compressor just quit. No burnt smell. Power is getting to it. Not a click or or a growl. Just dead. Would a dead start capacitor do this? 115 volt single phase. Cap says 400-480mfd 110volt. How to check cap? Dont want to buy new motor. Thanks |
Help with compressor
Sounds like the cap went, can you turn the motor by hand? Is it free
spinning? How bout the comp motor can you spin that as well? If all this works then I would replace the cap. I just happened to be looking at motors yesterday and the one for my IR is 144.00 Searcher |
Help with compressor
Don't overlook the possibility of a reset button on the motor. One I had
was painted over green. When it stopped, I assumed (there's that word) that it was the pressure switch, so I bought one of those ($50) and adapted it (several hours, trips to hardware store). When it still didn't run, I found a red button under the green paint in the motor endframe, gave it a push. That was all it needed. - - Rex B Shopdog wrote: Sounds like the cap went, can you turn the motor by hand? Is it free spinning? How bout the comp motor can you spin that as well? If all this works then I would replace the cap. I just happened to be looking at motors yesterday and the one for my IR is 144.00 Searcher |
Help with compressor
Hey, I forgot about that little button. Yeah try that first, plus just for
giggles make sure you have power to the outlet. Your switch could also be bad, I have had to replace that on mine but the symptoms were different. It would run and pressurize the tank but when it shut off it would not release as normal. Searcher |
Help with compressor
I stuck another slightly smaller cap on there and still nothing. I don't
know how to test caps. The online sites that explain testing kinda stump me. Motor turns freely, Comp turns freely. I took belt off. Nothing. I won't buy a new motor for this even at 75 dollar HF prices. Maybe a washing machine motor. Another scrounge -a-thon. Thanks |
Help with compressor
On Tue, 16 May 2006 13:12:20 -0700, daniel peterman wrote:
I stuck another slightly smaller cap on there and still nothing. I don't know how to test caps. The online sites that explain testing kinda stump me. Motor turns freely, Comp turns freely. I took belt off. Nothing. I won't buy a new motor for this even at 75 dollar HF prices. Maybe a washing machine motor. Another scrounge -a-thon. Thanks If it makes no humming noises at start, if it does nothing, it is not a capacitor issue. Just trace where electricity goes with a multimeter. i |
Help with compressor
On Tue, 16 May 2006 20:42:28 GMT, Ignoramus19822
wrote: On Tue, 16 May 2006 13:12:20 -0700, daniel peterman wrote: I stuck another slightly smaller cap on there and still nothing. I don't know how to test caps. The online sites that explain testing kinda stump me. Motor turns freely, Comp turns freely. I took belt off. Nothing. I won't buy a new motor for this even at 75 dollar HF prices. Maybe a washing machine motor. Another scrounge -a-thon. Thanks If it makes no humming noises at start, if it does nothing, it is not a capacitor issue. Just trace where electricity goes with a multimeter. And be careful to check what voltage you are looking at - this is one of those times where a Wiggy or test lamp will lie to you if you aren't asking it the right question. If it's a 240V motor and a component goes open (like one of the contacts in the pressure switch or motor contactor) you could see 120V from the feed on each end, yet that one open component keeps it from going. Or the breaker is half-tripped and it looks fine when you check it and get 120V to ground on both sides - because the 120V is going all the way around the circuit and showing up on the other breaker pole. If you check for 240V across the 2-pole breaker, you get nothing. And if you get a breaker that is half-tripping like that, change it out with a new one. The handle tie or internal common trip mechanism is supposed to prevent that from happening. A half trip breaker or a single-phase situation from switching only one side of the motor feed power (found on swimming pool pumps a lot - Never let your Pool Man play with the Electricity) can easily get induhviduals killed if they start poking around inside the equipment without properly killing the source power, and checking to make sure it's really dead. And you don't want a friend or loved one to be that person. -- Bruce -- -- Bruce L. Bergman, Woodland Hills (Los Angeles) CA - Desktop Electrician for Westend Electric - CA726700 5737 Kanan Rd. #359, Agoura CA 91301 (818) 889-9545 Spamtrapped address: Remove the python and the invalid, and use a net. |
Help with compressor
On Wed, 17 May 2006 12:44:36 -0700, daniel peterman wrote:
All contact seem to be fine. Outlet is hot 115 volts. No humming, no sparking, no nothing. Overload reset has been reset at least by pushing on it. I suppose it could be bad. I'll bypass it and see what happens (no load of course). Thanks for the input. I'm just gonna keep the pump and the belt and pulleys and scrap it. The tank has a pinhole anyway. If this is a cheap old compressor, I would scrap the entire thing, with the possible exception of wheels. Offer it free, known broken, on freecycle or craigslist, make it someone else's problem in one day. i |
Help with compressor
Normally I would tss it after careful scavenging but gave it one last
chance. I did what I should have done all along and picked up my favorite tool. THE HAMMER. Started tapping around on the motor with it plugged in. Nothing. Then I lightly hit the red reset button and sure enough it runs. I guess pushing that button wasn't enough but a hammer persuaded it. Works fine now and a small hammer is gonna be right there beside it at all times. |
Help with compressor
On Thu, 18 May 2006 08:11:31 -0700, daniel peterman wrote:
Normally I would tss it after careful scavenging but gave it one last chance. I did what I should have done all along and picked up my favorite tool. THE HAMMER. Started tapping around on the motor with it plugged in. Nothing. Then I lightly hit the red reset button and sure enough it runs. I guess pushing that button wasn't enough but a hammer persuaded it. Works fine now and a small hammer is gonna be right there beside it at all times. It still leaks through holes in the tank, though, right? i |
Help with compressor
The holes are more like hairline cracks. Barely visible. I know this is
a bit unsafe but I set the pressure to only rise to about 60 psi. I solderedup the cracks with silver solder. I just need it to get me thru this spraypainting job then it gets the craigslist treatment. |
Help with compressor
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Help with compressor
I have a portable tank and always run the spray gun off that secondary
reciever. As for the hazard of standing near the other tank I never do that and I never have anyone at my house that could be in the line of fire. I'm always at the end of a 75' air hose. Good cautionary advice from all ya'all. |
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