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Old 06-17-2018   #7
-=Jeff=-
 
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Join Date: Jul 2007
Location: Bartlett, IL
Posts: 7,158
Default Re: R-12 to R-134 conversion

Quote:
Originally Posted by secondchance View Post
High pressure switch for 134a opens (and open is fan run position) at 240 psi or close to it - high pressure switch for R-12 will not work correctly. Also, high pressure switch for 134a is almost none existent.
You can find them, just need to know where to look
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