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Mp39 Pt Chart

Mp39 Pt Chart - I use mp39 (401a) on all r12 medium temp. Poe and mp39 just read on duponts site that only ab or mo is recommended with mp39. I wonder if somebody installed it and found it was too much capacity with r22 and switched to. Both work very well, with any oil in short coupled applications. 134a has been nothing but a nuisance with it's low. The dupont suva refrigerant webpage shows names for their refrigerants like hp62 (404a), hp80 (402a), hp81 (402b), mp39 (401a) and mp66 (401b) and ashrae has. Wouldn't 134a be a better choice with poe on a. I'm pretty sure 401a doesnt play nice with mineral oil at low temps but ok for. Too many problems with high head pressure with 409a and having to. Recently encountered another old r12 two door box running mp39 that had a compressor less than two years old with a failed compressor.

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