GWPRPQ QUESTIONS WITH ACCURATE ANSWERS
After installation, the refrigerant piping for an A2L system must be: correct
answer pressurized with dry nitrogen to perform a leak test.
After reaching the required recovery level on a system that is charged with an A2L
refrigerant: correct answer a nitrogen sweep should be done to remove any
residual refrigerant vapor.
An uppercase letter designation (R-407A, R-407B, R-407C) is used when
refrigerant blends are: correct answer Composed of the same refrigerants, but
with different percentages of each.
Atmospheric pressure (0 PSIG) is equal to approximately: correct answer 760,000
microns.
Before beginning the installation of a system that is charged with an A2L
refrigerant: correct answer verify that all the components being installed are
designed for use with A2L refrigerants.
DOT regulations require refrigerant cylinders over 2.2 pounds of a 2L refrigerant
to be equipped with: correct answer Pressure relief valve.
EPA Section 608 regulations require that if a system is charged with a flammable
refrigerant, the equipment must have: correct answer Red markings on service
valves and tubing
Flammable refrigerant cylinders must have: correct answer Red band at the top of
the container.
, Hydrogen fluoride (HF) can form when: correct answer Any fluorine-containing
refrigerant undergoes complete or incomplete combustion or thermal
decomposition.
If the pressure relief valve has been activated on a system that is charged with a
flammable refrigerant: correct answer it should be replaced with a new valve of
the same rating.
Intrinsically safe electrical components: correct answer can be worked on while
live within a flammable atmosphere
Once a flammable refrigerant has been recovered and stored in a cylinder: correct
answer It must be placed a safe distance away from the work area before a
system repair or installation is started.
Patterns of adding refrigerant to an A2L system of at least once per three-year
period, should be considered: correct answer proof of a leak
Refrigerants that have a lowercase designation, such as R-134a, indicates a(n):
correct answer Isomer.
The first stage of the evacuation process which removes non-condensables from a
system is called: correct answer degassing.
The minimum concentration of a refrigerant that can propagate a flame through a
consistent mixture of the refrigerant and air is known as the: correct answer
Lower flmmability limit (LFL)
After installation, the refrigerant piping for an A2L system must be: correct
answer pressurized with dry nitrogen to perform a leak test.
After reaching the required recovery level on a system that is charged with an A2L
refrigerant: correct answer a nitrogen sweep should be done to remove any
residual refrigerant vapor.
An uppercase letter designation (R-407A, R-407B, R-407C) is used when
refrigerant blends are: correct answer Composed of the same refrigerants, but
with different percentages of each.
Atmospheric pressure (0 PSIG) is equal to approximately: correct answer 760,000
microns.
Before beginning the installation of a system that is charged with an A2L
refrigerant: correct answer verify that all the components being installed are
designed for use with A2L refrigerants.
DOT regulations require refrigerant cylinders over 2.2 pounds of a 2L refrigerant
to be equipped with: correct answer Pressure relief valve.
EPA Section 608 regulations require that if a system is charged with a flammable
refrigerant, the equipment must have: correct answer Red markings on service
valves and tubing
Flammable refrigerant cylinders must have: correct answer Red band at the top of
the container.
, Hydrogen fluoride (HF) can form when: correct answer Any fluorine-containing
refrigerant undergoes complete or incomplete combustion or thermal
decomposition.
If the pressure relief valve has been activated on a system that is charged with a
flammable refrigerant: correct answer it should be replaced with a new valve of
the same rating.
Intrinsically safe electrical components: correct answer can be worked on while
live within a flammable atmosphere
Once a flammable refrigerant has been recovered and stored in a cylinder: correct
answer It must be placed a safe distance away from the work area before a
system repair or installation is started.
Patterns of adding refrigerant to an A2L system of at least once per three-year
period, should be considered: correct answer proof of a leak
Refrigerants that have a lowercase designation, such as R-134a, indicates a(n):
correct answer Isomer.
The first stage of the evacuation process which removes non-condensables from a
system is called: correct answer degassing.
The minimum concentration of a refrigerant that can propagate a flame through a
consistent mixture of the refrigerant and air is known as the: correct answer
Lower flmmability limit (LFL)
