Exam (elaborations)
HVAC EPA 608 Certification Study Guide With Complete Solution
- Course
- Institution
Are there drop-in replacements for R-12 systems? Why or why not? - Answer 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? - Answer Ester based oils and they do not mix with othe...
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