Jun-air Compressor stopped working today. HELP!

Joined
Aug 13, 2001
Posts
45
Loc
Coronado, CA, USA
Hi Everyone!

My Jun-air compressor has been acting funny lately. Wouldn't kick on when I was joining frames and the pressure would get low. So last night I drained the water out of the tank and went to empty the little bit of water in the filter and that broke. Went to home depot and bought a new filter. Installed the filter and added oil because that was very low (my employees don't give a @#$%&* about maintenance)and NOW the thing won't turn on.
I flip the switch and the light goes on, it humms for a few seconds then shuts off as if a little cuircut breaker cuts the power maybe because the pump might not be turning.
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I bought it used and have no warranty! :eek:

Larson has a new one for $1,450 plus shipping from Chicago,
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I made this face when I heard the price plus shipping!

I was think about tearing into the top of this thing to see if I can find something wrong with it.

Any advice from the wise masses out in framing land??????

Wish you all BIG sales!!!!

Thanks,
Glenn

P.S. business has been O.K. not our normal summer sales :rolleyes:
 
We don't have a nice JUN-AIR model, but is it possible it has some sort of safety/shutoff mechanism that is being triggered? (too much oil, input airflow restriction, broken pressure cutoff switch, etc)
 
Glenn, I'm sure someone will be able to offer a quick and easy fix.

But just in case they don't, remember that LJ sells to a very specialized market and their compressor is VERY quiet.

Shop around. Try farm supply stores as a first choice, then hardware stores or even Sears.

If you have an attic or basement in which to put the compressor, do it. The price of several yards of tubing will save you about 75% on the cost of a new compressor.

Kit
 
Most compressors have a thermal switch that will shut them off if they over-run, or if the oil gets low and the motor or the compressor heats up.

It's usually a simple little (usually) red reset pushbutton. I'm not familiar with the Jun-Air, but an air compressor works exactly like a piston engine. I wouldn't be digging into it too much.

If it's belt driven, see if you can turn the pulley(s) by hand. If they both turn relatively easily, it's probably a thermal protect switch issue. If the motor won't turn(very unlikely), it can be repaired at any shop that repairs electric motors. If the actual compressor is frozen up and won't turn, search the good ol' Yellow Pages for a compressor sales/service company.

We have a big outfit here that sells and services compressors. The name of the outfit is Patton. Just Patton. I'm pretty sure it's at least a multi-state business, if not nationwide.
Good luck!
 
If you are a Larson Juhl customer try there tech services phone number. They may be able to help you or put you in touch with a repair service.
 
OK! Here the scoop. This is a generic fix and may not apply.

Many compressors use a pressure relay. looks a lot like a big electrical relay but is activated with air pressure. Many manufactures don't include a spark suppression circuit with leads to failure just like you described. It like points in a old car, the contacts weld themselves together. You can if you are comfortable with working on stuff like that, take the cover off the regulator, remove the contacts, file them down and put them back. Or replace the regulator.

Good luck
framer

Please unplug it first and let the air out before attempting to working on it.

[ 08-02-2004, 03:17 PM: Message edited by: framer tg: ]
 
This is exactly that part I had to replace on ours last year. Ours had the opposite problem - it wouldn't turn off.

Since its running for a short time and turning off, I'd guess it to be some kind of safety sensor (overheat, low/too much oil, etc) or possibly the pressure relay switch. There aren't many parts to a compressor.
 
Bob Shirk is right - there is no place better than LJ's tech services for that kind of problem with a product that they carry.

Pat
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That's an expensive compressor and I'd get it fixed. In the meantime, get a cheap relatively quiet compressor from somewhere like Home Depot. Then send your compressor to a repair center. You need a back-up compressor anyway.
 
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