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LATEST UPDATED EPA 608 Questions & Answers.
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LATEST UPDATED EPA 608 Questions & Answers.
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LATEST UPDATED EPA 608 Questions &Answers
the state of the refrigerant entering the metering device is? - ANS-A subcooled high
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npressure liquid. n
what type of refrigerant is used in VERY high-pressure appliances? - ANS-R-503
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what type of refrigerant is used in MEDIUM pressure appliances? - ANS-R-500
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what type of refrigerant is used in HIGH pressure appliances? - ANS-R-410A and R-22
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what device is located at the END of the liquid line? - ANS-The expansion device.
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what type of refrigerants are the LEAST harmful to the ozone layer? - ANS-HFC
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refrigerants.
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How much money does the EPA offer to individuals who report information about others
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who vent refrigerants into the atmosphere? - ANS-$10,000.
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which class of refrigerants does R-22 fall into? - ANS-The HCFC class.
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(hydrochloroflurocarbons)
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which gas should be used when checking for leaks in various systems? - ANS-Nitrogen.
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which term describes the process of changing a refrigerant from a liquid to a gas using
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HEAT? - ANS-Latent heat.
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refrigerants in the SUCTION line are in what phase and state? - ANS-Cold vapor.
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how many miles above the Earth's surface does the ozone layer in the stratosphere
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extend? - ANS-31 miles.
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what year was the Montreal Protocol put in place? - ANS-1989.
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refrigerant recovery equipment should be checked for (blank) on a daily basis? - ANS-
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Refrigerant leaks and oil levels. n n n n
should recovery machines be used on equipment that contains hydrogen? - ANS-NO.
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which purity test is used to determine the type of refrigerant? - ANS-ARI 700.
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, what type of unit only requires ONE service connection? - ANS-self-contained recovery
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units.
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air will cause (blank) discharge pressures in a refrigeration system. - ANS-Higher.
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a strong odor is around during the recovery process. what is most likely the cause of
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this? - ANS-A compressor burnout.
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what is the best way (position) to transport refrigeration cylinders? - ANS-Upright.
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you can only accurately read refrigerant pressure with a stable (blank)? - ANS-
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Temperature.
an explosion can occur if (blank) is vented in an enclosed environment? - ANS-
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Hydrogen.
can refrigerants be mixed in a recovery tank? - ANS-NO.
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what is the state of refrigerant leaving the liquid receiver? - ANS-High pressure liquid.
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what is the minimum microns a vacuum pump must pull when evacuating a system? -
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ANS-500 microns.
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what is usually contained in refrigerants made before 1950? - ANS-SO2. (sulfur dioxide)
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what prevents transient slugs of liquid from getting into the compressor? - ANS-
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Accumulator.
what is the filter drier responsible for removing? - ANS-Moisture and Particulates.
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can the compressor compress liquid? - ANS-NO.
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what is the best leak-checking procedure for a pressure decay test? - ANS-Nitrogen.
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when the annual leak rate exceeds (blank), all comfort cooling systems with more than
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50lb of refrigerant must be repaired. - ANS-15%
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True or False. n n
the receiver is not part of the low side of a system located in a refrigeration system? -
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nANS-True.
how often should leaks be checked in the recovery or recycling unit for commercial
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refrigeration equipment? - ANS-3 months.
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