First Off, Welcome To the Site & Your First Machine !! There WILL BE MORE !!!
Your machine is newer then most of us collect . I had a Problem like yours is having with the amount .You'll either Need to Clean your Coin Mech ?? or replace it (I had to Replace It ) And Are you Sure the Cans arn't hung up in the Drop chute ? There are Many diffrent type dispencing systems Screw drive -Lever Drop- Rolling Trays OR Hoppers
I'd search the Net for a Manual with luck you might find one ?? But There Are Guys here that know
WAY more then Me !!
Good Luck !!
Ltransam