Looking for a operators manual for a Puma air compressor MODEL ASV-50-228

Thanks all, just got it from an old friend he bought it new in 89, and its never seen any hard usage, also I would like to know whats it worth. It is a 220 volt, 2 stage, 5 horse and a 50 gal tank. If someone could point me in the direction to find a operators manual, going to their web site ain't worth the time, I even called them at their TN office but got no replies.
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