I have a 4 hp 20 gallon 220Volt Sears compressor. It is RED in color. I'm pretty sure the compressor is made by devillbiss. I bought this compressor used and cannot find a pdf manual for it. You can order parts but not a manual on the sears website... not sure it this is a porter cable or not... it is sears, of course but someone else made the compressor... any ideas.. this is a horizontal compressor, 4 hp, 20 gallon, 8.5 cfm at 90psi... etc.. any help greatly appreciated!