Page |1
EPA 609 CERTIFICATION HVAC REFRIGERANT
REGULATIONS AND SAFETY TEST2026/2027 BANK / EXAM
QUESTIONS WITH DETAILED VERIFIED ANSWERS / ALL
EXAM QUESTIONS AND VERIFIED ANSWERS |ALREADY
GRADED A+|
When transporting cylinders containing used refrigerant, the DOT
requires that you... - ANSWER-attach DOT classification tags
According to ASHRAE's 1992 refrigerant safety classification,
which of the following designations would be the most safe? -
ANSWER-A-1
The over-evacuation of a system... - ANSWER-does not occur
Equipment covered by EPA regulations include... - ANSWER-all
air-conditioning and refrigeration equipment using CFC, HCFC, or
HFC refrigerants
, Page |2
Never overfill refrigerant storage cylinders because... - ANSWER-
the internal pressure of the cylinders may rise in heated areas
and cause an explosion
It is important not to mix different refrigerants in the same
container because... - ANSWER-the mixture may be impossible to
reclaim
Manifold gauge sets are often color coded, when this is done, the
low pressure gauge is color coded... - ANSWER-Blue
All devices used for refrigerant recovery must... - ANSWER-meet
EPA standards
Reusable refrigerant containers that are normally under any
pressure above 15 psig, must be hydrostatically tested and date
stamped every... - ANSWER-5 years
, Page |3
Which refrigerants must be recovered before opening a system or
disposing of a system? - ANSWER-all refrigerants must be
recovered
To obtain accurate vacuum readings during system evacuation,
the system vacuum gauge should be located... - ANSWER-as far
from the vacuum pump as possible
What is the best proof that CFCs are in the stratosphere? -
ANSWER-measurement of CFCs in air samples from the
stratosphere
The recovery of refrigerants is necessary to... - ANSWER-
maintain adequate supplies for service calls after the production
bans, prevent the venting of refrigerants to the atmosphere,
prevent stratospheric ozone depletion
A compound pressure gauge, typically used on the low side of the
system, measure pressure in... - ANSWER-psig and inches of
mercury
, Page |4
________ refers to the process of cleaning refrigerant by oil
separation and single or multiple passes through filter-driers,
which reduce moisture and acidity? - ANSWER-Recycling
The high pressure gauge on service manifold sets has a
continuous scale, usually calibrated to read from... - ANSWER-0
to 500 psi.
What is the process that returns refrigerant to new-product
specifications and that requires chemical analysis? - ANSWER-
reclaim
A cylinder with a gray body and a yellow top indicates that the
cylinder is designed to hold... - ANSWER-recovered refrigerant
HCFC refrigerants... - ANSWER-are less harmful to stratospheric
ozone than CFCs
Which type of refrigerant is the most harmful to stratospheric
ozone? - ANSWER-Refrigerants containing Bromine
EPA 609 CERTIFICATION HVAC REFRIGERANT
REGULATIONS AND SAFETY TEST2026/2027 BANK / EXAM
QUESTIONS WITH DETAILED VERIFIED ANSWERS / ALL
EXAM QUESTIONS AND VERIFIED ANSWERS |ALREADY
GRADED A+|
When transporting cylinders containing used refrigerant, the DOT
requires that you... - ANSWER-attach DOT classification tags
According to ASHRAE's 1992 refrigerant safety classification,
which of the following designations would be the most safe? -
ANSWER-A-1
The over-evacuation of a system... - ANSWER-does not occur
Equipment covered by EPA regulations include... - ANSWER-all
air-conditioning and refrigeration equipment using CFC, HCFC, or
HFC refrigerants
, Page |2
Never overfill refrigerant storage cylinders because... - ANSWER-
the internal pressure of the cylinders may rise in heated areas
and cause an explosion
It is important not to mix different refrigerants in the same
container because... - ANSWER-the mixture may be impossible to
reclaim
Manifold gauge sets are often color coded, when this is done, the
low pressure gauge is color coded... - ANSWER-Blue
All devices used for refrigerant recovery must... - ANSWER-meet
EPA standards
Reusable refrigerant containers that are normally under any
pressure above 15 psig, must be hydrostatically tested and date
stamped every... - ANSWER-5 years
, Page |3
Which refrigerants must be recovered before opening a system or
disposing of a system? - ANSWER-all refrigerants must be
recovered
To obtain accurate vacuum readings during system evacuation,
the system vacuum gauge should be located... - ANSWER-as far
from the vacuum pump as possible
What is the best proof that CFCs are in the stratosphere? -
ANSWER-measurement of CFCs in air samples from the
stratosphere
The recovery of refrigerants is necessary to... - ANSWER-
maintain adequate supplies for service calls after the production
bans, prevent the venting of refrigerants to the atmosphere,
prevent stratospheric ozone depletion
A compound pressure gauge, typically used on the low side of the
system, measure pressure in... - ANSWER-psig and inches of
mercury
, Page |4
________ refers to the process of cleaning refrigerant by oil
separation and single or multiple passes through filter-driers,
which reduce moisture and acidity? - ANSWER-Recycling
The high pressure gauge on service manifold sets has a
continuous scale, usually calibrated to read from... - ANSWER-0
to 500 psi.
What is the process that returns refrigerant to new-product
specifications and that requires chemical analysis? - ANSWER-
reclaim
A cylinder with a gray body and a yellow top indicates that the
cylinder is designed to hold... - ANSWER-recovered refrigerant
HCFC refrigerants... - ANSWER-are less harmful to stratospheric
ozone than CFCs
Which type of refrigerant is the most harmful to stratospheric
ozone? - ANSWER-Refrigerants containing Bromine
