Review

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

• 1 Minute

• 2 minutes

• 3 Minutes

• 4 Minutes

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.

• A Only

• B Only

• Both A and B

• Neither A nor B

The ozone layer filters out most of the sun’s harmful

• Infrared Radiation

• Ultraviolet Radiation

• Gamma Radiation

• Alpha Radiation

The reduction of ozone in the stratosphere could cause

• An increase in skin cancer and eye cataracts.

• An increase in plant life growth

• An increase in the earth’s polar ice

• An increase in marine life growth

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.

• Tech A

• Tech B

• Both A and B

• Neither A nor B

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

• J2788

• DOT-4BA

• J2099

• J1991

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

• 1.75lb

• 4.50lb

• 3.75lb

• 2.50lb

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 17mm O.D. quick coupler on the low-side service hose.

• Tech A

• Tech B

• Both A and B

• Neither A nor B

Which of these identifies a cylinder of R-1234yf refrigerant?

• White

• Gray

• Light blue

• White with red band

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

• Chilled to 45 degrees Fahrenheit

• Stored out of direct sunlight

• Heated to 95 degrees Fahrenheit

• Stored for less than 6 hours