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EPA 608 Universal Exam With 100% Correct Answers 2024.
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EPA 608 Universal Exam With 100% Correct Answers 2024.
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EPA 608 Universal Exam With 100% Correct Answers2024
Refrigeration technicians who violate the Clean Air Act can: - - ANS-Lose their EPA
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certification, be fined, be required to appear in Federal court.
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After 1995, any supplies of CFC refrigerants to service existing units in the USA can
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only come from: - - ANS-recovery and recycling.
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Refrigerant that is recovered can be returned to: - - ANS-the same system or other
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systems owned by the same person without restriction.
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Refrigerant can not be called "reclaimed" unless it: - . - ANS-has been chemically
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analyzed and the refrigerant meets the ARI-700 standard.
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The EPA can require a technician to demonstrate their ability to perform proper
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procedures for recovering and/or recycling refrigerant. Failure to demonstrate
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competency can result in: - - ANS-revocation of the technicians certification.
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What characteristic(s) of CFCs make them more likely to reach the stratosphere than
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most other compounds containing chlorine? - - ANS-Refrigerants that contain chlorine
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but not hydrogen are so stable that they do not break down in the lower atmosphere
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after being released. The chlorine or bromine reacts with the ozone, causing it to
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change back to oxygen, thus destroying the ozone layer.
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A system is considered dehydrated when: - - ANS-the vacuum indicator shows you
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have reached and held the required finished vacuum.
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Disposable refrigerant containers are used for ______ - ANS-virgin refrigerant
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Which refrigerant is an HCFC? - - ANS-R-123, R-124, R-22
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What statement is true about an azeotropic refrigerant mixture? - - ANS-It is a mixture
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that acts like a single-component refrigerant over its entire range.
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Chlorofluorocarbos (CFCs) and hydrochlorofluorocarbons (HCFCs) have which of the b b b b b b b b
following in common? - - ANS-It is a mixture that acts like a single-component
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refrigerant over its entire range.
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, To scrap a disposable cylinder, the internal cylinder pressure should be reduced to at
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least: - - ANS-0 psig.
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Manifold gauge sets are often color coded, when this is done, the high pressure gauge
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is color coded: - Red. - ANS-
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In general, blended refrigerants should be charged: - - ANS-as a liquid.
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Blended refrigerants leak from a system: - - ANS-in uneven amounts due to different
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vapor pressures.
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Which of the following gases help form the earth's protective shield? - Stratospheric
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Ozone - ANS-
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In a refrigerant system, the device that changes a low pressure vapor to a high pressure
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bvapor is the: - compressor. - ANS-
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Data shows that chlorine in the stratosphere comes mainly from CFCs rather than from
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natural sources such as volcanoes because: - The rise in the amount of chlorine in the
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stratosphere matches the rise in the amount of fluorine, which has different natural
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sources than chlorine; The rise in the amount of chlorine in the stratosphere matches
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the rise in CFC emissions; Air samples taken from the stratosphere over erupting
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volcanoes show that volcanoes contribute a small quantity of chlorine to the
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stratosphere when compared to CFCs; - ANS-
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Which atom of the CFC molecule causes ozone depletion? - chlorine - ANS-
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The ozone layer protects the earth from: - ultraviolet radiation from the sun. - ANS-
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When using with any solvent, cleaner, chemical or refrigerant, you should review: -
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material safety data sheets. - ANS-
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An award of up to what amount may be paid to a person supplying information that
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leads to a penalty against a technician who is intentionally venting? - 10,000 - ANS-
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The Montreal Protocol is: - a treaty among nations that controls production of CFCs and
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HCFCs. - ANS-
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Which refrigerant is an HCFC? - R-123, R-22, R-124 - ANS-
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What is one of the most serious results of damage to the ozone layer? - increases in
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human skin cancer - ANS-
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Of the refrigerants listed below, which has the lowest ozone depletion potential (ODP)?
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- R-22 - ANS-
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