Compressor Oil Leak
From contributor R:
I had a Grainger sixty gallon that started letting a little oil pass through - never so much that I saw it coming out the air gun. I found that my air and oil filters, plus a desiccant dryer stopped any contaminants from getting to my spray gun.
Contributor D has the right idea, though. Fill and bleed the compressor tank several times and replace any flexible lines that go to your gun. Air and oil filters are a must, and if you don't have a refrigerated dryer, the desiccant dryer works well for me.
From the original questioner:
That’s pretty much what I thought I would do, and just wanted that second opinion. I am considering getting a second sixty gallon unit to alternate with to help keep the first unit cool (less condensation) and have as a back up. I am a cabinet maker and only finish my own work, so finishing is a lesser part of what I do.
From contributor S:
There is no real good way to remove all the oil from your lines. What you need to do is put a coalescing filter down-line from your compressor. Depending on the make (Devilbiss, Graco, Sharpe), they will remove contaminates down to 0.01 microns. This will get rid of nearly all the oil.
Of course though, the best suggestion is a 3 stage desiccant system. The first stage is a water trap (mostly around 1-5 microns), the second is the coalescor (0.1-0.01 microns), and the last stage is a chemical desiccant system. They are a bead that absorbs the moisture. That would be the best way to go.
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