Well, I never really "designed" the air system in the shop, just have hoses running about and today it bit me in the butt. I have a fixture that uses pneumatic solenoids to fixture a part. I guess oil got into one and killed the solenoid. I tried to take it apart and clean it out to no avail - some tiny tiny parts inside were galled and bent. A new solenoid is $176! Luckily I found some used but working ones on ebay - four for $15! (woohoo!).
Anyway, it illustrated the fact that I *really* need to get the oil out of my air lines. Its a Jun Air compressor with 6 rotary screw heads and it chows through oil like a mofo.
I bought this on eBay just now
But I am not sure that's gonna do it, although I am sure it will help. I have one machine in particular that needs really clean air, so I was thinking of putting a piece of copper pipe on the wall vertically, about 6 feet long, then having a U on the bottom and the air comes in one side of the U, goes all the way up the pipe, then back down a few feet and into the machine that needs the dry/clean air. The idea being that the copper pipe will take heat out of the air and also help the oil/water fall out of suspension and gather at the bottom of the U. Then in the bottom of the U, I'd put a purge valve to drain it out once every so often. Then going out of my piping it would go into the filter above I just bought then into the machine.
What do you guys think? Will that get me nice clean air free of oil? If you think that would work, maybe I could build the oil seperator copper-pipe thing over at the compressor and allow myself nice clean air to all machines, instead of just the one?
While I'm asking ?'s, does anyone have a good way to flush out air hoses that have oil in them due to oil from the compressor condensing in the air hose? I was thinking I could hook up an oil luber to the start of the air hose but fill it with degreaser and blast air/degreaser down the hose, but maybe thats bad? I'd hate to eat away the lining of the hose or have some degreaser residue left in there when I hooked it back up to my machine.