I found a Jun-Air!

I love that people on this forum try to buy old, broken air compressors and the OP says no thanks. And no one bats an eye. Where else can you get that?

I pulled this thread up to review some of the stuff I've done in the past. I'm bumping it because I'm doing some work on this stuff tomorrow and I don't want to have to search for it again. 

There are several of these on my local FaceBalls Market.  Learn something new everyday.

At the Morgan factory this morning i spotted this and had to put it here.

I could hear a thrum of something compressor like, but definitely not the piston compressor racket. It sounded like our rotary unit

Edit: nevermind, i now see JunAir is a major paint booth manufacturer in Europe 

Big Block Swap... Jun-Air style!

This is the reason that I bumped this thread last week.

I was never able to get the second compressor working on the gray one, so I just disconnected the power to one of the units and ran off of one. I needed to keep the non-op one in place though, because I couldn't find a proper plug to eliminate it altogether. It may be some odball European thread or something.

It still made plenty of silent air for my needs, but I hadn't used it in a long time and just found myself moving it around the basement for the past few years. Now I'm in the process of getting rid of stuff and decided to do something with this stuff.

I got the smaller green and yellow one from a friend a few years ago. He used it as an airbrush compressor for a while. He gave it to me when he sold his building. He said that it wasn't working anymore, but couldn't remember if the motor failed or if it was leaking. I put it down in the basement with the other one and never checked it out. It's an absolute mess though. It was covered in overspray and shop dust.

I plugged the green one in and I could hear the switch clicking, but it would shut itself off a second later. Further efforts to troubleshoot were limited to a few whacks with a rubber mallet, but no luck. I really wasn't that disappointed, because it helped me streamline my decision making process. 

I took a few measurements and decided to swap the one good gray compressor onto the green tank.

Cleaned it up as best as I could:

Everything is a little bigger and more heavy duty on the gray side of things, so I'm going to keep the original wiring with the larger compressor. The regulators are a little different, but I will probably see if I can mate the two pump regulator up to the green tank. It seemed to work fine wired for a single compressor on the gray tank, and I won't have to worry about overpowering the smaller switch. I'll just make sure to adjust it to shut off at a safe and reasonable pressure.

The big stuff seems to fit.

I still haven't made all the final connections yet. I may get rid of the quarter turn valve that my friend added and swap on the original Jun-Air valve from the gray tank, assuming that all the threads are correct.

I also have to fill the compressor with oil. I know that I put fresh oil in the bad gray pump when I was trying to get that one to work, but I don't remember if I changed the oil in the good one that I'm keeping. I salvaged the fresh, new but unused oil out of the bad unit, and will put it into the keeper.

At $47 per pint, it was worth the extra effort.

And it smells way better than the stuff that was in the yellow compressor!

I salvaged all the electrical stuff from the two bad pumps, along with the extra hoses and fittings from the gray tank, and then scrapped the rest. I should have everything that I need to make this work.