I've always hated that air compressors have to be so darned loud. But, maybe they don't have to be...MUHAHAHAHAHAHAAA.....
I know that these things are supposed to be cooled by the freon coming back to the inlet, but if it runs hot, just get a cooling fan. Or you could use 2 in parallel for faster air charging. I've got a compressor out of a 1 ton AC I will save for this. I'll put it on my list of things to do.
Have a great 4th of July and see you all Monday!