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Faunsdale, AL | Had an ice builder cabinet at one dairy to make chilled water. It was R12 like most old stuff was back in the day. Actually had the two 5 hp cast iron Coplametic compressors hooked to it that had come off the two 1000 gallon flat top milk tanks we were replacing.
Anyway after a decade or more, it quit working and got the refrigeration guy in to check it. He walked into the milk room and got out his torch and fired it up. Green flame……he walked outside and flame cleared up…….opened lid of ice builder and flame got really green. The steel coils in the water had pitted through and we had to get a new one.
I never saw a refrigeration guy that worried about phosgene gas. Every one just fired up the torch and heated solder joints to disassemble and rebraze when reassembling. I’m sure some is created, but unless you’re in a confined space it’s not an issue. Probably one reason why the current crop of technicians are taught to purge with nitrogen though. That does help prevent oxidation inside the lines. | |
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How to tell if tractor AC has been retrofitted?
