Hvac Type 1 Study Guide Questions And Correct Answers

It is generally recommended that solderless piercing type valves only be used on _________ or__________ tubing material {Ans: copper, aluminum}What should you watch for when recovering refrigerant from a system that experienced a compressor burn-out {Ans: signs for contamination in the oil}(True/False) Appliances with non-operating compressors cannot always achieve desired evacuation level utilizing system-dependent recovery equipment {Ans: True}Small appliances are equipped with a process tube onto a _____ type access fitting can be installed {Ans: piercing}(True/False) None of the hydrocarbon refrigerant are approved for retrofit into existing household refrigerators {Ans: True}After recovering refrigerant, if nitrogen is used to flush debris out if the system, what do you do with the nitrogen? {Ans: the nitrogen may be legally vented}