SAE 609
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 who is right
A only
The EPA allows the use of R-134a recovery-one equipment provided that the:
Equipment meets J2810 standards
Before a container of stored recycled refrigerant is used, the container must be checked for:
Non-condesable gases
R-1234yf is a preferred refrigerant over R-134a because
R-1234yf has a lower GWP
technicians servicing an MVAC system should do any of these EXCEPT
Store refrigerant in a disposable container
The ozone layer filters out most of the suns harmful:
Ultraviolet radiation
SAE standard J2099 specifies that the maximum level of non-condensable gases in recycled R-134a should not exceed:
1.5% by volume
The recovery process on an R-12 or R-134a A/C System should continue until a stable vacuum is held by the system for:
2 minutes
if the required charge level of refrigerant for MVAC system is 40 ounces which of these is correct charge level measured in pounds
2.50lb (1.13)
R-1234yf refrigerant has a global warming potential (GWP) of
4
the reduction of ozone in the stratosphere could cause:
An increase of skin cancer and eye cataracts
Technician A says that SAE standard J639 spells out details for system design, implementation and service Technician B says that SAE standard J639 specifies refrigerant fitting types and sizes for each refrigerant who is right
Both A and B
Technician A says that anyone servicing MVAC systems for hire must be trained and certified Technician B says that each piece of refrigerant handling equipment that is used to service motor vehicle air conditioners must be approved and certified who is right
Both A and B
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 Who's right
Both A and B
empty disposable R-134a refrigerant containers should be
Evacuated into a recovery/ recycling machine
Which identifies R-744
Gray
Which of these is a flammable refrigerant, unacceptable under SNAP as a suitable for CFC-12
HC-12a
R 134a refrigerant must be reclaimed to meet which of these purity standards
J2099
Requirements for recovery/recycling/recharging equipment for R-1234yf refrigerant are set by SAE standard
J2843
Electronic leak detectors for R-1234yf should meet
J2913
Which identifies R-134a
Light blue
Technician A says that it is OKAY to use disposable refrigerant tank to store recycled refrigerant Technician B says that it is OKAY to fill an approved refrigerant tank to 70% of it gross weight rating who's right
Neither A or B. Never store in disposable container or fill above 60% of gross weight rating
Alternative refrigerants use a unique set of service fittings that:
Prevent accidental mixing of refrigerants
A technician who's successfully completes the training and certification on an EPA-approved section 609 program can be legally service MVAC systems that use any of these refrigerants EXCEPT
R-22
recovery equipment for R-134a Refrigerant must meet standards set by:
SAE
Servicing MVAC systems on hybrid and electric vehicles requires:
Special service procedures to disable the high voltage system prior to service
A container of recycled R-134a refrigerant that is being tested for non-condensable gases (air) should be:
Stored out of direct sunlight
Technician A says that recovery/ 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 17.0 mm O.D. quick coupler on the low-side service hose. who's right
Technician A only
A recycled refrigerant container has been checked and found to be above the given pressure limit for the ambient temperature 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 who's right
Technician B only
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 whos right
Technician B only
Which identifies R-12 refrigerant
White
Which of these identifies a cylinder of R-1234yf refrigerant
White With red Band
When service equipment hoses with manual shutoff valves are not connected to an A/C system, the valves should be in the:
Closed position
