Posted by aarcuda on September 27, 2001 at 13:19:23: via: or 65.64.7.197
In Reply to: HC Accidents ??? posted by jg/oz on September 24, 2001 at 16:36:38:
I particularly like the part of the story that says "The system was built for R12 and the seal materials are not compatible with the other refrigerants found. This probably caused the service port Schrader valve seals to swell, which would prevent the pressure in the system from reaching the gauges."
I guess it wan't possible to verify this condition BY LOOKING AT THEM after the fact. They must have swelled quite a lot to keep them sealed after the guages were attached. sure. maybe they couldnt be removed afterwards because the swelled too much. ya, thats it.
I thought the seals in an R-12AC system needed to be changed when converting to 134 because the r-12 type seals would leak and not because they would swell. (now I know how to get rid of those pesky o-ring leaks - throw some of that leak stop in it. what was it again, some 134, some r12 som hcs and some r22?).
anyways, the story sounds bogus. especialy the spontaneous combustion part and the part about the pressure remaining in the system a week later