Not a plumber, or named Dan, but I have a couple questions. Did it work ok when the disposer was first installed? Sounds like a plumber installed this? so I'm guessing the plug was knocked out. If not, I'm guessing it would have overflowed.
When you start it, does it sound normal? Does it sound like it's running? Does it get to a point that it sounds like it quits running? Do you have your owner's manual? It probably has a section on problems and probable solutions in the back...maybe this is one of them.
Ok, lots of questions and no answers. If it's not overflowing, then it sounds like it is draining. Which would make me think it's not running right. Maybe look for an appliance forum and hit them with the make and model number for some professional ideas. Jim.
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