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Originally Posted by R Leo
They used to use R12 but have switched to R134a. Really old refigerators used R717 (ammonia) and R764 (sulphur dioxide). Some commercial equipment uses R502 but I've never heard of a refigeration (like a refrigerator or freezer) system using R11 or R22.
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Reminds me of when a friend and I were getting rid of a bunch of junk on his property. There was an old gas refrigerator from an old camper we needed to get rid of. We diecided to just bust it up so we could throw it into the scrap metal we were hauling off. Never figured it still had a charge in it.
Never smelled ammonia like that before!
We had to run like hell and get a hose and flush it down for about a half hour before we could even get close to it.
