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EPA 608 HVAC Certification Study Guide Q&A Verified 100%
EPA 608 HVAC Certification Study
EPA 608 HVAC Certification Study
EPA 608 HVAC Certification Study Guide Q&A Verified 100% 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 ...
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