Alas.. it uses r134a! I have gauges, and our maint guy here can do it as well. as it stands now, I have put some superseal in it, but it must not have water in the housing for that to work. I found that out about half way thru after I had recharged it. this stuff reacts to the air and the moisture and then seals the metal leaks. i still have a very little ammt of refrigerant in there as I have halfway decent high pressure, but very little low pressure. Im going to add one last can of refrigerant to it and cycle it dry (running for 2 mins max)for the evening then watch it. Hopefully that will get it done. I read an article where an engineer at a FORD motor plant used it in a chiller for oil in a lathe machine. water passed around the coil, then thru an oil tank. it sealed it up. hopefully I can get it this time.
im also armed with the specs from current on the pressures so I can get it close to there. if this dont work, then yes, I am looking for a new unit. I found one on ebay but it uses r-22 so that makes it expensive.