refrigerant and recovery Exam With Complete Solutions.
the recovery process on an R-12 or R-134a A/C system should continue until a stable vacuum held by the system for - 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 - b only the ozone layer filters out most of the suns harmful - ultraviolet radiation the reduction of ozone in the stratosphere could cause - 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 - both a and b R 134a refrigerant must be reclaimed to meet which of these purity standards - j2099 if the required charge level of refrigerant for MVAC system is 40 ounces which of these is correct charge level measured in pounds - #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 - a only which of these identifies a cylinder of R1234yf - white with red band
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