EPA 608 UNIVERSAL ACTUAL PAPER
SOLVED QUESTIONS
◉ Long hoses between the unit and the recovery machine should
not be used because they cause: - excessive pressure drop;
increased recovery time; increased emissions
Answer:
◉ Recovery equipment that relies upon the compressor in the
system would be considered: - system-dependent.
Answer:
◉ A hermetic compressor must never be operated when: - there is
a dehydration vacuum in the system.
Answer:
◉ "Self-contained" recovery devices: - can capture liquid and/or
vapor refrigerant without the assistance of components in the air-
conditioning or refrigeration equipment.
Answer:
◉ Systems charged with R-410A should be leak checked with: -
pressurized nitrogen.
Answer:
, ◉ R-410A is not a typical blended refrigerant because: - It is near
azeotropic refrigerant; it can be charged as either a liquid or
vapor; while it has a 400 series refrigerant number it behaves like
a 500 series refrigerant
Answer:
◉ A ternary refrigerant blend is a _______ part mixture. - three-part
Answer:
◉ In a refrigeration system, high pressure vapor is converted to
high pressure liquid in the: - condenser.
Answer:
◉ Which of the following is an approved "drop-in" service
replacement for r-12? - According to the EPA there are no "drop-
in" replacements
Answer:
◉ The proper method of discarding a disposable refrigerant
cylinder is to: - assure that all refrigerant is recovered and that the
cylinder is rendered useless, then recycle the metal.
Answer:
◉ CFC refrigerants are so named because they contain the
elements: - Chlorine, fluorine, carbon
Answer:
SOLVED QUESTIONS
◉ Long hoses between the unit and the recovery machine should
not be used because they cause: - excessive pressure drop;
increased recovery time; increased emissions
Answer:
◉ Recovery equipment that relies upon the compressor in the
system would be considered: - system-dependent.
Answer:
◉ A hermetic compressor must never be operated when: - there is
a dehydration vacuum in the system.
Answer:
◉ "Self-contained" recovery devices: - can capture liquid and/or
vapor refrigerant without the assistance of components in the air-
conditioning or refrigeration equipment.
Answer:
◉ Systems charged with R-410A should be leak checked with: -
pressurized nitrogen.
Answer:
, ◉ R-410A is not a typical blended refrigerant because: - It is near
azeotropic refrigerant; it can be charged as either a liquid or
vapor; while it has a 400 series refrigerant number it behaves like
a 500 series refrigerant
Answer:
◉ A ternary refrigerant blend is a _______ part mixture. - three-part
Answer:
◉ In a refrigeration system, high pressure vapor is converted to
high pressure liquid in the: - condenser.
Answer:
◉ Which of the following is an approved "drop-in" service
replacement for r-12? - According to the EPA there are no "drop-
in" replacements
Answer:
◉ The proper method of discarding a disposable refrigerant
cylinder is to: - assure that all refrigerant is recovered and that the
cylinder is rendered useless, then recycle the metal.
Answer:
◉ CFC refrigerants are so named because they contain the
elements: - Chlorine, fluorine, carbon
Answer:
