i called the place where we bought it from he said it sounds like it was set for only bottles he is sup to be calling me back. Im still waiting though

model # is DNCB501R/511-8   I do believe its 3 cans deep  and the problem is all of them are not vending right the single ones are doing the u buy 2 then takes your money once then it will let u buy 2 and so on the big ones with the water are giving u 1 and then u looose your money 3 times then it will vend another

sorry it has been so long thank you for all your help just thought you should know i figured out how to change the prices.

Thank you for your help it is really appreciated.  I will find all that information out when i go to service that machine again in about a week or so.  Although like i said i am new at this and am still learning about our machines so what do you mean by whether it's a single price machine or perhaps a four price machine.  Also how can you find out.

the model # says its an s-20 it has 3 rows of slide out hangers holds about 8 items to a row.  Then it has in between the 3 rows of hangers 4 square cups that hold items each of those rotate circle wrap around. this machine only takes coins. The company i work for has bought the vending company and it is one of the machine that has come with it.