Rockola dr peper machine

Hello, I recently acquired a RockOla Dr. Pepper, 5 can, model ccc5-220 coin pop machine.  i cannot find any information about it at all.  i have contacted genesis who bought rockola in the 90's and they are trying to find it.  i saw 3 for sale on ebay but no information or manuals. can someone help?  thanx  works perfect by the way, just needs a shot of freon