EPA 608 Core Universal.pdf file:///C:/Users/HP/Desktop/TYPA%20NEW/EPA%20608%20Core%
EPA 608 Core Universal
1. Refrigeration technicians who violate the Clean Air Act can
ANS D) all of the above.
2. After 1995, any supplies of CFC refrigerant to service existing units in the USA can
only come from
ANS A) recovery and recycling.
3. Refrigerant that is recovered can be returned to
ANS A) the same system or other systems owned by the same person without restriction.
4. Refrigerant can not be called "reclaimed" unless it
ANS B) has been chemically analyzed and the refrigerant meets the ARI-700 purity standard.
5. The EPA can require a technician to demonstrate their ability to perform proper
procedures for recovering and/or recycling refrigerant. Failure to demonstrate
competency can result in
ANS A) revocation of the technician's certi- fication.
6. What characteristic(s) of CFCs make them more likely to reach the stratos- phere than
most other compounds containing chlorine?
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,EPA 608 Core Universal.pdf file:///C:/Users/HP/Desktop/TYPA%20NEW/EPA%20608%20Core%
ANS A) Refrigerants that contain chlorine but not hydrogen are so stable that they do not break
down in the lower atmosphere after being released. The chlorine or bromine reacts with ozone,
causing it to change back to oxygen, thus destroying the ozone layer.
7. A system is considered dehydrated when
ANS A) the vacuum indicator shows you have reached and held the required finished vacuum.
8. Disposable refrigerant containers are used for refrigerant.
ANS C) virgin
9. Which refrigerant is an HCFC?
ANS A) R-124
10. What statement is true about an azeotropic refrigerant mixture?
ANS D) It is a mixture that acts like a single-component refrigerant over its entire range.
11. Chlorofluorocarbons (CFCs) and hydrochlorofluorocarbons (HCFCs) have which of the
following in common?
ANS D) They must be recovered before opening or disposing of appliances.
12. To scrap a disposable cylinder, the internal cylinder pressure should be reduced to
at least
ANS A) 0 psig.
13. Manifold gauge sets are often color coded, when this is done, the high pressure
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,EPA 608 Core Universal.pdf file:///C:/Users/HP/Desktop/TYPA%20NEW/EPA%20608%20Core%
gauge is color coded
ANS A) red.
14. In general, blended refrigerants should be charged
ANS C) as a liquid.
15. Blended refrigerants leak from a system
ANS B) in uneven amounts due to different vapor pressures.
16. Which of the following gases help form the earth's protective shield?
ANS D) Stratospheric Ozone
17. In a refrigeration system, the device that changes a low pressure vapor to a high
pressure vapor is the
ANS C) compressor.
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EPA 608 Core Universal
1. Refrigeration technicians who violate the Clean Air Act can
ANS D) all of the above.
2. After 1995, any supplies of CFC refrigerant to service existing units in the USA can
only come from
ANS A) recovery and recycling.
3. Refrigerant that is recovered can be returned to
ANS A) the same system or other systems owned by the same person without restriction.
4. Refrigerant can not be called "reclaimed" unless it
ANS B) has been chemically analyzed and the refrigerant meets the ARI-700 purity standard.
5. The EPA can require a technician to demonstrate their ability to perform proper
procedures for recovering and/or recycling refrigerant. Failure to demonstrate
competency can result in
ANS A) revocation of the technician's certi- fication.
6. What characteristic(s) of CFCs make them more likely to reach the stratos- phere than
most other compounds containing chlorine?
1/
1 of 25 8/8/2024, 2:46
,EPA 608 Core Universal.pdf file:///C:/Users/HP/Desktop/TYPA%20NEW/EPA%20608%20Core%
ANS A) Refrigerants that contain chlorine but not hydrogen are so stable that they do not break
down in the lower atmosphere after being released. The chlorine or bromine reacts with ozone,
causing it to change back to oxygen, thus destroying the ozone layer.
7. A system is considered dehydrated when
ANS A) the vacuum indicator shows you have reached and held the required finished vacuum.
8. Disposable refrigerant containers are used for refrigerant.
ANS C) virgin
9. Which refrigerant is an HCFC?
ANS A) R-124
10. What statement is true about an azeotropic refrigerant mixture?
ANS D) It is a mixture that acts like a single-component refrigerant over its entire range.
11. Chlorofluorocarbons (CFCs) and hydrochlorofluorocarbons (HCFCs) have which of the
following in common?
ANS D) They must be recovered before opening or disposing of appliances.
12. To scrap a disposable cylinder, the internal cylinder pressure should be reduced to
at least
ANS A) 0 psig.
13. Manifold gauge sets are often color coded, when this is done, the high pressure
2/
2 of 25 8/8/2024, 2:46
,EPA 608 Core Universal.pdf file:///C:/Users/HP/Desktop/TYPA%20NEW/EPA%20608%20Core%
gauge is color coded
ANS A) red.
14. In general, blended refrigerants should be charged
ANS C) as a liquid.
15. Blended refrigerants leak from a system
ANS B) in uneven amounts due to different vapor pressures.
16. Which of the following gases help form the earth's protective shield?
ANS D) Stratospheric Ozone
17. In a refrigeration system, the device that changes a low pressure vapor to a high
pressure vapor is the
ANS C) compressor.
3/
3 of 25 8/8/2024, 2:46
