I have an old Monitor Top refrigerator that I want to modernize. It still works, so it still has four pounds of poison locked inside of it and the evaporator is rusting so it is only a matter of time before it leaks by itself. My question is, is there any special way to get rid of the sulfur dioxide? Can it be safely purged to the atmosphere or does it have to be bottled and neutralized?

I want to modernize this refrigerator with a non-toxic system, most likely out of a modern dorm refrigerator. A quick Google search of "monitor top conversion" should bring up some results - one at antique vintage appliances and another at an HVAC-R forum that provide examples of what people have done.

Thanks!

Joe