This is a quick video I made of the 25 hp compressor running. If you notice I have painted this compressor. I made videos of it before so you can see the before and after. I told my wife that I was going to put the compressor in a video and she was horrified. She said it was the ugliest looking compressor she ever did see. So with that encouragement I took the thing apart and painted it. Looks good now, paint really makes a difference.
I was experimenting, which is my usual mode of operation. I have some extra balancing circuits here and I also added the time delay relay for the unloader valves. You can hear when it starts that it doesn’t start pumping for a couple of seconds.