Quote:
Originally Posted by dieselbenz1
Vacuum pumps used for refregriation are certified intrinsically safe. So long as the vacuum pump is certified as such you would be good. Uncertified you would just be waiting for the event to happen!
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I think there at least two things wrong with that statement...
First.... that pump is safe when used in a CLOSED SYSTEM.... not tested or certified pulling potentially explosive gases into it...
Second.... a refrigerator pump is in the same category as an R4 with regards to Lubrication... it is lubed by the mix of oil in the refrigerant... which keeps going around the closed system.... so it will not last long if used without a relube designed into it....