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HVAC: EPA 608 Certification Study Guide Questions and Answers 100% Solved
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HVAC: EPA 608 Certification Study Guide Questions and Answers 100% Solved Are there drop-in replacements for R-12 systems? Why or why not? ️️No because the new refrigerants are incompatible with the oils and lubricants used in R-12 systems. What type of oil is used in R-134a and what oils will it mix with? ️️Ester based oils and they do not mix with other oils What type of lubricant is used with HCFCs? ️️Alkylbenzene lubricant What is difference b/w ternary blend a azeotropic blend? ️️Ternary blends are three-part mixtures whereas azeotropic blends are blends of two or more compounds that act like a single
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