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EPA 608 Core Universal With correct Answers 2024 Questions and Answers 2024 / 2025 (Verified Answers by Expert)
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EPA 608 Core Universal With correct Answers 2024 Questions and Answers 2024 / 2025 (Verified Answers by Expert)

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Información del documento

  • 9 de agosto de 2024
  • 25
  • 2024/2025
  • Examen
  • Preguntas y respuestas

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  • epa 608 core universal

Escuela, estudio y materia

  • EPA 608
  • EPA 608

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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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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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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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