You're welcome. Last week we were trying to spray some primer on Dan's car again and the d*** compressor blew some fuses again. We packed it in for the night and the next day I decided to fix it once and for all. I found two problems. The fuse box I had installed specifically for the compressor was badly burned inside from all those fuses blowing. Also, when the compressor shut off it was not unloading the heads again, but was letting air from the tank escape too.

I bought a new fuse box, and removed the check valve to see what was going on there. The new check valve I had bought has a circlip on the bottom so you can remove the plastic disc that acts as the check valve. When I dismantled it I found a piece of black crud had become lodged under the corner of the plastic piece, keeping it from sealing. I cleaned it up and replaced it, and last weekend we got through the entire weekend of spraying with no more problems.

It looks like our tank (which is probably 8 years old) is rusting inside and that is where I think that piece of dirt came from. But the fuses stayed cool this time. No sin on this setup, when we are at the shop it gets a real work out.

Don