ASE 609 EXAM QUESTIONS AND ANSWERS
The recovery process on an R-12 or
R-134 A/C system should continue until a stable vacuum is held by the system for:
(A) 1 minute
(B) 2 minutes
(C) 4 minutes
(D) 5 minutes - Answers :(B) 2 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.
Who is right?
(A) A only
(B) B only
(C) Both A and B
(D) Neither A nor B - Answers :(B) B only
why is A wrong?
The ozone layer filters out most of the sun's harmful:
(A) Infrared radiation.
(B) Ultraviolet radiation.
(C) Gamma radiation.
(D) Alpha radiation. - Answers :(B) Ultraviolet radiation.
The reduction of ozone in the stratosphere could cause:
(A) an increase in skin cancer and eye cataracts
(B) an increase in plant life growth.
(C) an increase in the earth's polar ice.
D) an increase in marine life growth. - Answers :(A) 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.
Who is right?
(A) A only
, (B) B only
(C) Both A and B
(D) Neither A nor B - Answers :(C) Both A and B
R-134a refrigerant must be recycled to meet which of these purity standards?(A) J2788
(B) DOT-4BA
(C) J1991
(D) J2099 - Answers :(D) J2099
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?
(A) 1.75 lb (794 g)
(B) 2.50 lb (1.13 kg)
(C) 3.75 lb (1.70 kg)
(D) 4.50 lb (2.04 kg) - Answers :(B) 2.50 lb (1.13 kg)
How many ounces are in a pound? - Answers :16 oz
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.
Who is right?
(A) A only
(B) B only
(C) Both A and B
(D) Neither A nor B - Answers :(A) A only
why is B wrong?
Which of these identifies a cylinder of R-1234yf refrigerant?
(A) White
(B) Gray
(C) Light blue
(D) White with red band - Answers :(D) White with red band
A container of recycled R-134a refrigerant that is being tested for non-condensable
gases (air) should be:
(A) chilled to 45° (7°C).
(B) stored out of direct sunlight.
(C) heated to 95°F (35°C).
(D)stored for less than 6 hours. - Answers :(B) stored out of direct sunlight.
The EPA allows the use of R-134a recovery-only equipment provided that the:
The recovery process on an R-12 or
R-134 A/C system should continue until a stable vacuum is held by the system for:
(A) 1 minute
(B) 2 minutes
(C) 4 minutes
(D) 5 minutes - Answers :(B) 2 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.
Who is right?
(A) A only
(B) B only
(C) Both A and B
(D) Neither A nor B - Answers :(B) B only
why is A wrong?
The ozone layer filters out most of the sun's harmful:
(A) Infrared radiation.
(B) Ultraviolet radiation.
(C) Gamma radiation.
(D) Alpha radiation. - Answers :(B) Ultraviolet radiation.
The reduction of ozone in the stratosphere could cause:
(A) an increase in skin cancer and eye cataracts
(B) an increase in plant life growth.
(C) an increase in the earth's polar ice.
D) an increase in marine life growth. - Answers :(A) 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.
Who is right?
(A) A only
, (B) B only
(C) Both A and B
(D) Neither A nor B - Answers :(C) Both A and B
R-134a refrigerant must be recycled to meet which of these purity standards?(A) J2788
(B) DOT-4BA
(C) J1991
(D) J2099 - Answers :(D) J2099
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?
(A) 1.75 lb (794 g)
(B) 2.50 lb (1.13 kg)
(C) 3.75 lb (1.70 kg)
(D) 4.50 lb (2.04 kg) - Answers :(B) 2.50 lb (1.13 kg)
How many ounces are in a pound? - Answers :16 oz
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.
Who is right?
(A) A only
(B) B only
(C) Both A and B
(D) Neither A nor B - Answers :(A) A only
why is B wrong?
Which of these identifies a cylinder of R-1234yf refrigerant?
(A) White
(B) Gray
(C) Light blue
(D) White with red band - Answers :(D) White with red band
A container of recycled R-134a refrigerant that is being tested for non-condensable
gases (air) should be:
(A) chilled to 45° (7°C).
(B) stored out of direct sunlight.
(C) heated to 95°F (35°C).
(D)stored for less than 6 hours. - Answers :(B) stored out of direct sunlight.
The EPA allows the use of R-134a recovery-only equipment provided that the:
