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 strage area before use.

Technician B: Says that the vapor in the container should be slowly vented into a refrigerant handling unit.

Who is right?

The ozone layer filters out most of the sun's harmful:

The reduction of ozone in the stratosphere could cause:

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 is right?

R-134a refrigerant must be recycled to meet which of these purity standards?

If the required charge level of refrigerant for an MVAC system is 40 ounces, which of these is the correct charge level measured in pounds

Technician A says that recovery/recycling/recharging equipment for R1234yf refrigerant requires integration with a refrigerant identifier.

Technician B says that recovery/recycling/recharging equipment for R1234yf refrigerant uses a 17mm O.D. quick coupler on the low side service hose.

Who is right?

Which of these identifies a cylinder of R1234yf refrigerant?

A container of recycled R-134a refrigerant that is being tested for non-condensable gases (air) should be:

The EPA allows the use of R134a recovery-only equipment provided that the:

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.

Before a container of stored recycled refrigerant is used, the container must be checked for:

Recovery equipment for R-134a refrigerant must meet standards set by:

Alternative refrigerants use a unique set of service fittings that

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.

Who is right?

SAE standard J2099 specifies that the maximum level of non-condensable gases in recycled r-134a should not exceed:

When service equipment hoses with manual shutoff valves are not connected to an A/C system, the valves should be in the :

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 technician who successfully completes the training and certification in an EPA-approved Section 609 program can legally service MVAC systems that use any of these refrigerants EXCEPT:

Electronic leak detectors for R-1234yf should meet:

Technicians servicing an MVAC system should do any of these EXCEPT:

Requirements for recovery/recycling/recharging equipment for R1234yf refrigerant are set by SAE standard:

R-1234yf refrigerant has a global warning potential (GWP) of:

R-1234yf is a preferred refrigerant over R-134a because

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?

Servicing MVAC system on hybrid and electric vehicles requires:

Technician A says that anyone servicing MVAC system 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?

Which of these is a flammable refrigerant, unacceptable under SNAP as a substitute for CFC-12

Empty disposable R-134a refrigerant containers should be