Refrigerant and recovery Exam A+ Pass Verified 2025 New Update

Refrigerant and recovery the recovery process on an R-12 or R-134a A/C system should continue until a stable vacuum held by the system for - Answer- 2 minutes technician a says that the refrigerant container should be placed in a cooler storage area before use technician b says that the vapor in the container should be slowly vented into a refrigerant handling unit - Answer- b only the ozone layer filters out most of the suns harmful - Answer- ultraviolet radiation the reduction of ozone in the stratosphere could cause - Answer- an increase in skin cancer and eye cataracts technician a says that sunlight striking CFC molecules can cause chlorine to be released technician b says that chlorine atoms react with ozone to produce chlorine monoxide - Answer- both a and b R 134a refrigerant must be reclaimed to meet which of these purity standards - Answer- j2099 if the required charge level of refrigerant for MVAC system is 40 ounces which of these is correct charge level measured in pounds - Answer- #number of ounces /16 2.50 technician a says that recover/recycling/recharging equipment for R-1234yf refrigerant requires integration with a refrigerant identifier technician b says that recovery/recycling/recharging equipment for R-1234yf refrigerant uses a 17mm O.D quick coupler on the low side service hose - Answer- a only which of these identifies a cylinder of R1234yf - Answer- white with red band a container of recycled R-134a refrigerant that is being tested for non-condensable gases (air) should be - Answer- stored out of direct sunlight the epa allows the use of R-134a recovery only provided that the - Answer- equipment meets j2810 standards technician a says that it is OK to use a disposable refrigerant tank to store recycled refrigerant technician b says that it is ok to fill an approved refrigerant tank to 70% of its gross weight rating who was right - Answer- neither before a container of a stored recycled refrigerant is used the container must be checked for - Answer- non condensable gases recovery equipment for R-134a refrigerant must meet standards set by - Answer- SAE alternative refrigerants use a unique set of service fittings that - Answer- prevent accidental mixing of refrigerants technician a says that R-744 refrigerant is accepted by the EPA as an alternative for retrofit technician b says that R-134a refrigerant is accepted by the EPA as an alternative for retrofit - Answer- b only SAE standards J2099 specifies that the maximum level of non-condensable gases in recycled R-134a should not exceed - Answer- 1.5% by volume when service equipment hoses with manual shutoff valves are not connected to an A/C system, the valves should be in the - Answer- closed position technician a says that R-1234yf may be used to retrofit an R-134a system technician B says that R-1234yf is an ozone depleting gas - Answer- neither a technician who successfully completes the training and certification in an EPA approved section 609 program can legally service MVAC systems that uses any of these refrigerants EXCEPT - Answer- R-22