UPDATED EPA 608 QUIZLET
(2023)questions and correct detailed
Answers
the state of the refrigerant entering the metering device is? - ANSWER -A subcooled
high pressure liquid.
what type of refrigerant is used in VERY high-pressure appliances? - ANSWER -R-503
what type of refrigerant is used in MEDIUM pressure appliances? - ANSWER -R-500
what type of refrigerant is used in HIGH pressure appliances? - ANSWER -R-410A and
R-22
what device is located at the END of the liquid line? - ANSWER -The expansion device.
what type of refrigerants are the LEAST harmful to the ozone layer? - ANSWER -HFC
refrigerants.
How much money does the EPA offer to individuals who report information about others
who vent refrigerants into the atmosphere? - ANSWER -$10,000.
which class of refrigerants does R-22 fall into? - ANSWER -The HCFC class.
(hydrochloroflurocarbons)
which gas should be used when checking for leaks in various systems? - ANSWER -
Nitrogen.
which term describes the process of changing a refrigerant from a liquid to a gas using
HEAT? - ANSWER -Latent heat.
refrigerants in the SUCTION line are in what phase and state? - ANSWER -Cold vapor.
how many miles above the Earth's surface does the ozone layer in the stratosphere
extend? - ANSWER -31 miles.
what year was the Montreal Protocol put in place? - ANSWER -1989.
refrigerant recovery equipment should be checked for (blank) on a daily basis? -
ANSWER -Refrigerant leaks and oil levels.
, should recovery machines be used on equipment that contains hydrogen? - ANSWER -
NO.
which purity test is used to determine the type of refrigerant? - ANSWER -ARI 700.
what type of unit only requires ONE service connection? - ANSWER -self-contained
recovery units.
air will cause (blank) discharge pressures in a refrigeration system. - ANSWER -Higher.
a strong odor is around during the recovery process. what is most likely the cause of
this? - ANSWER -A compressor burnout.
what is the best way (position) to transport refrigeration cylinders? - ANSWER -Upright.
you can only accurately read refrigerant pressure with a stable (blank)? - ANSWER -
Temperature.
an explosion can occur if (blank) is vented in an enclosed environment? - ANSWER -
Hydrogen.
can refrigerants be mixed in a recovery tank? - ANSWER -NO.
what is the state of refrigerant leaving the liquid receiver? - ANSWER -High pressure
liquid.
what is the minimum microns a vacuum pump must pull when evacuating a system? -
ANSWER -500 microns.
what is usually contained in refrigerants made before 1950? - ANSWER -SO2. (sulfur
dioxide)
what prevents transient slugs of liquid from getting into the compressor? - ANSWER -
Accumulator.
what is the filter drier responsible for removing? - ANSWER -Moisture and Particulates.
can the compressor compress liquid? - ANSWER -NO.
what is the best leak-checking procedure for a pressure decay test? - ANSWER -
Nitrogen.
when the annual leak rate exceeds (blank), all comfort cooling systems with more than
50lb of refrigerant must be repaired. - ANSWER -15%
(2023)questions and correct detailed
Answers
the state of the refrigerant entering the metering device is? - ANSWER -A subcooled
high pressure liquid.
what type of refrigerant is used in VERY high-pressure appliances? - ANSWER -R-503
what type of refrigerant is used in MEDIUM pressure appliances? - ANSWER -R-500
what type of refrigerant is used in HIGH pressure appliances? - ANSWER -R-410A and
R-22
what device is located at the END of the liquid line? - ANSWER -The expansion device.
what type of refrigerants are the LEAST harmful to the ozone layer? - ANSWER -HFC
refrigerants.
How much money does the EPA offer to individuals who report information about others
who vent refrigerants into the atmosphere? - ANSWER -$10,000.
which class of refrigerants does R-22 fall into? - ANSWER -The HCFC class.
(hydrochloroflurocarbons)
which gas should be used when checking for leaks in various systems? - ANSWER -
Nitrogen.
which term describes the process of changing a refrigerant from a liquid to a gas using
HEAT? - ANSWER -Latent heat.
refrigerants in the SUCTION line are in what phase and state? - ANSWER -Cold vapor.
how many miles above the Earth's surface does the ozone layer in the stratosphere
extend? - ANSWER -31 miles.
what year was the Montreal Protocol put in place? - ANSWER -1989.
refrigerant recovery equipment should be checked for (blank) on a daily basis? -
ANSWER -Refrigerant leaks and oil levels.
, should recovery machines be used on equipment that contains hydrogen? - ANSWER -
NO.
which purity test is used to determine the type of refrigerant? - ANSWER -ARI 700.
what type of unit only requires ONE service connection? - ANSWER -self-contained
recovery units.
air will cause (blank) discharge pressures in a refrigeration system. - ANSWER -Higher.
a strong odor is around during the recovery process. what is most likely the cause of
this? - ANSWER -A compressor burnout.
what is the best way (position) to transport refrigeration cylinders? - ANSWER -Upright.
you can only accurately read refrigerant pressure with a stable (blank)? - ANSWER -
Temperature.
an explosion can occur if (blank) is vented in an enclosed environment? - ANSWER -
Hydrogen.
can refrigerants be mixed in a recovery tank? - ANSWER -NO.
what is the state of refrigerant leaving the liquid receiver? - ANSWER -High pressure
liquid.
what is the minimum microns a vacuum pump must pull when evacuating a system? -
ANSWER -500 microns.
what is usually contained in refrigerants made before 1950? - ANSWER -SO2. (sulfur
dioxide)
what prevents transient slugs of liquid from getting into the compressor? - ANSWER -
Accumulator.
what is the filter drier responsible for removing? - ANSWER -Moisture and Particulates.
can the compressor compress liquid? - ANSWER -NO.
what is the best leak-checking procedure for a pressure decay test? - ANSWER -
Nitrogen.
when the annual leak rate exceeds (blank), all comfort cooling systems with more than
50lb of refrigerant must be repaired. - ANSWER -15%
