Sorry for the afterthought...the issue with the floating ice is familiar to me. It is VERY COMMON that line cleaners are sent out to maintain these systems. All they do is acid flush the lines and clean the taps. If the level is low in the tank, they chug water in to top it off. That is why I am interested in branching out past the " normal " refrigeration service. Customers are suffering from " hit and run " service. We need to make a difference and just do it right the first time !!! Thanks again.