Page |1
EPA 608 CORE TEST EXAM 2026/2027 BANK WITH 500
QUESTIONS WITH DETAILED VERIFIED ANSWERS / EXAM
QUESTIONS AND VERIFIED ANSWERS |ALREADY GRADED
A+|
Containers designated "refillable" by DOT are used for
transporting recovered pressurized refrigerant _________. -
ANSWER-to meet safety requirements
Recycling and recovery equipment intended for use with air-
conditioning and refrigeration equipment (except for small
appliances) must be tested under: - ANSWER-ARI 740
Refrigerant leaves the condenser of an operating system as a: -
ANSWER-high pressure liquid.
It is important not to mix R-22 and R-410A refrigerants in the
same container because: - ANSWER-the mixture may be
impossible to reclaim.
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The evacuation of a system is a method of: - ANSWER-
dehydration.
A system is dehydrated to: - ANSWER-remove water and water
vapor.
An example of a HFC refrigerant is:
R-11
R-124
R-142b
R-410A - ANSWER-R-410A
In general, blended refrigerants should be charged: - ANSWER-
as a liquid.
We dealing with small systems, how many different refrigerants
may be recovered into the same cylinder? - ANSWER-only one.
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If excessive nitrogen pressure is exerted within a low-pressure
chiller, what component will fail first? - ANSWER-
Disposable refrigerant containers are used for _______
refrigerant. - ANSWER-Virgin
Disposable refrigerant containers are used for _______
refrigerant. - ANSWER-remove water and water vapor.
What type of refrigerant is chlorine free? - ANSWER-HFC's
Refrigerant migrates to the compressor crankcase because of a
difference in ________ between the refrigerant and the oil -
ANSWER-vapor pressure
Which refrigerant is an HCFC? R-22, R-134a, R-410a,
R-12 - ANSWER-R- 22
Which Refrigerant is an HCFC? R-124, R-134A, R410a,
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R-12 - ANSWER-R-124
What factor(s) affects the speed of evacuation? - ANSWER-◦A)
the size of the equipment being evacuated
◦B) the ambient temperature
◦C) the amt of moisture in the system
Systems charged with R-134a should be leak checked with: -
ANSWER-pressurized dry nitrogen
HCFC refrigerants contain: - ANSWER-hydrogen, chlorine,
fluorine, carbon
Manifold gauge sets are often color coded, when this is done, the
low pressure gauge is color coded: - ANSWER-blue
After refrigerant liquid transfer between recovery unit and the
system being emptied, you need to avoid trapping: - ANSWER-
liquid refrigerant between service valves
EPA 608 CORE TEST EXAM 2026/2027 BANK WITH 500
QUESTIONS WITH DETAILED VERIFIED ANSWERS / EXAM
QUESTIONS AND VERIFIED ANSWERS |ALREADY GRADED
A+|
Containers designated "refillable" by DOT are used for
transporting recovered pressurized refrigerant _________. -
ANSWER-to meet safety requirements
Recycling and recovery equipment intended for use with air-
conditioning and refrigeration equipment (except for small
appliances) must be tested under: - ANSWER-ARI 740
Refrigerant leaves the condenser of an operating system as a: -
ANSWER-high pressure liquid.
It is important not to mix R-22 and R-410A refrigerants in the
same container because: - ANSWER-the mixture may be
impossible to reclaim.
, Page |2
The evacuation of a system is a method of: - ANSWER-
dehydration.
A system is dehydrated to: - ANSWER-remove water and water
vapor.
An example of a HFC refrigerant is:
R-11
R-124
R-142b
R-410A - ANSWER-R-410A
In general, blended refrigerants should be charged: - ANSWER-
as a liquid.
We dealing with small systems, how many different refrigerants
may be recovered into the same cylinder? - ANSWER-only one.
, Page |3
If excessive nitrogen pressure is exerted within a low-pressure
chiller, what component will fail first? - ANSWER-
Disposable refrigerant containers are used for _______
refrigerant. - ANSWER-Virgin
Disposable refrigerant containers are used for _______
refrigerant. - ANSWER-remove water and water vapor.
What type of refrigerant is chlorine free? - ANSWER-HFC's
Refrigerant migrates to the compressor crankcase because of a
difference in ________ between the refrigerant and the oil -
ANSWER-vapor pressure
Which refrigerant is an HCFC? R-22, R-134a, R-410a,
R-12 - ANSWER-R- 22
Which Refrigerant is an HCFC? R-124, R-134A, R410a,
, Page |4
R-12 - ANSWER-R-124
What factor(s) affects the speed of evacuation? - ANSWER-◦A)
the size of the equipment being evacuated
◦B) the ambient temperature
◦C) the amt of moisture in the system
Systems charged with R-134a should be leak checked with: -
ANSWER-pressurized dry nitrogen
HCFC refrigerants contain: - ANSWER-hydrogen, chlorine,
fluorine, carbon
Manifold gauge sets are often color coded, when this is done, the
low pressure gauge is color coded: - ANSWER-blue
After refrigerant liquid transfer between recovery unit and the
system being emptied, you need to avoid trapping: - ANSWER-
liquid refrigerant between service valves
