Examen
HVAC: EPA 608 Certification Study Guide (with errorless answers)
- Grado
- Institución
Are there drop-in replacements for R-12 systems? Why or why not? correct answers 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? correct answers Ester based oils and they do not...
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