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Air compressor not restarting
- Thread starter David
- Start date
It is dedicated 220v. I could connect a 110V motor as well as I have 110V in the space.
I have the day off tomorrow so I should be able to dig into this a bit further.
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What's the value of the capacitor on the motor. I'll check if my ESR tester can test the size you have.
I actually don't know. I have to pull the covers off to see if they have markings.
It's actually warmer today, 19C vs 14-17C the other days when it wasn't working.
I did have the door to the lean to open when it filled the first time today so that may have kept to overall interior air temp low enough to not trip the thermal.
I'll cycle it a few times and see how it does.
I did have the door to the lean to open when it filled the first time today so that may have kept to overall interior air temp low enough to not trip the thermal.
I'll cycle it a few times and see how it does.
Thermaled out for the fourth recharge. Motor was 117F. This leads me to think everything is fine. It's just getting too hot inside the lean-to. 230 degree air coming off the head into a small enclosed insulated space is going to warm things up quickly. Maybe an exhaust fan to suck the hot air out.
I was just going to suggest that. Recall how hot the exhaust air is into the cooler and then how cool it is on the outlet. Perhaps duct the fan on the compressor after the radiator to outside. Put an inlet vent near the bottom of the enclosure to bring in cooler air that moves up cooling things as it rises to the inlet of the fan on the compressor.
You already have a fan blowing air through the radiator right? Just duct that air outside the enclosure.
edit: Or even duct it into the shop instead to keep the noise away from your neighbors. The heat will help in the winter and likely not warm up the shop all that much during the summer.
Unfortunately the shop side of the wall the compressor is on is covered with cabinets.
I'll add a vent at the bottom and top of the door and put the exhaust fan on the top vent.
Need to make a muffler for the compressor intake as that will drastically reduce the noise
slow-poke
Ultra Member
It could be if that space is really small.
I still think you have a marginal capacitor(s). My 60 gallon Sanborn is enclosed under the stairs leading from the garage to the basement. Basically trapped between close proximity concrete walls on three sides and stair case on the third that has most of the risers blocked for sound dampening and it gets plenty warm in the garage on a hot day, high 20's for sure and mine runs fine.
I expect the problem will get worse with time and the motor windings will get hotter and hotter, hopefully not too hot. I hope I'm wrong. Capacitors are cheap and testing is free if you can borrow a meter.
I still think you have a marginal capacitor(s). My 60 gallon Sanborn is enclosed under the stairs leading from the garage to the basement. Basically trapped between close proximity concrete walls on three sides and stair case on the third that has most of the risers blocked for sound dampening and it gets plenty warm in the garage on a hot day, high 20's for sure and mine runs fine.
I expect the problem will get worse with time and the motor windings will get hotter and hotter, hopefully not too hot. I hope I'm wrong. Capacitors are cheap and testing is free if you can borrow a meter.
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What's leading me to think it's the heat is that it ran fine in the garage and outside during the winter when it was cold.
I think I can test them with my new fancy pants tester. No idea how to do that though so I best do some research.
As I said, I have the tester. But quick question. How old is the compressor?
Unknown, I've had it for a year. I'd guess it's less than five years old.
Unfortunately the capacitance test doesn't test the ESR.
slow-poke
Ultra Member
Usually the tolerance is written on the capacitor either in % or absolute.
The 177uF is interesting, Capacitors degrade to a lower value over time, so that's why I say interesting. Capacitors appear to be okay, assuming that 177 value is within the stated tolerance. Too high will cause increased start current.
If your centrifugal switch is dirty such that it is kicking out late that would cause over current briefly consistent with the overload trip.
The 177uF is interesting, Capacitors degrade to a lower value over time, so that's why I say interesting. Capacitors appear to be okay, assuming that 177 value is within the stated tolerance. Too high will cause increased start current.
If your centrifugal switch is dirty such that it is kicking out late that would cause over current briefly consistent with the overload trip.