I don't know anything about that particular model, but the general considerations are is it big enough (internal dimensions) and does it get cold/stay cold.
If it works, the refrigerant type is of no concern. Refrigerators in general are fully sealed systems--not like your car that uses flexible hoses that gradually leak refrigerant. A fridge can go indefinitely without a "recharge". There are people here using 50-year-old refrigerators!
If it's really old like mine, I'd be careful about the size. My ancient Beer Meister was built around the old Hoff-Stevens kegs, and it's not tall enough inside for Cornies or any of the other popular modern kegs. Fortunately, I have a Hoff-Stevens 1/4-bbl that fits and will work fine for my 5-gallon batches.