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EPA 608 universal Exam with 100% correct answers 2024 Questions and Answers 2024 / 2025 (Verified Answers by Expert) $12.99   Add to cart

Exam (elaborations)

EPA 608 universal Exam with 100% correct answers 2024 Questions and Answers 2024 / 2025 (Verified Answers by Expert)

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  • Course
  • EPA 608
  • Institution
  • EPA 608

EPA 608 universal Exam with 100% correct answers 2024 Questions and Answers 2024 / 2025 (Verified Answers by Expert)

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  • August 9, 2024
  • 37
  • 2024/2025
  • Exam (elaborations)
  • Questions & answers
  • EPA 608
  • EPA 608
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BESTGOODIES
Epa 608 universal exam.pdf file:///C:/Users/HP/Desktop/TYPA%20NEW/Epa%20608%20univer




EPA 608 UNIVERSAL EXAM


1. Refrigeration technicians who violate the Clean Air Act can

ANS -

Lose their EPAcertification, be fined, be required to appear in Federal court.



2. After 1995, any supplies of CFC refrigerants to service existing units in theUSA can

only come from

ANS -

recovery and recycling.



3. Refrigerant that is recovered can be returned to

ANS -

the same system or othersystems owned by the same person without restriction.



4. Refrigerant can not be called "reclaimed" unless it

ANS - .
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has been chemicallyanalyzed and the refrigerant meets the ARI-700 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 -

revocation of the technicians certifica-tion.



6. What characteristic(s) of CFCs make them more likely to reach the stratos-phere than

most other compounds containing chlorine? -

ANS 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 theozone,

causing it to change back to oxygen, thus destroying the ozone layer.



7. A system is considered dehydrated when

ANS -

the vacuum indicator shows youhave reached and held the required finished vacuum.
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8. Disposable refrigerant containers are used for

ANS virgin refrigerant



9. Which refrigerant is an HCFC? –

ANS R-123, R-124, R-22



10. What statement is true about an azeotropic refrigerant mixture? -

ANS It is amixture that acts like a single-component refrigerant over its entire range.



11. Chlorofluorocarbos (CFCs) and hydrochlorofluorocarbons (HCFCs) havewhich of the

following in common? –



ANS It is a mixture that acts like a single-com-ponent refrigerant over its entire range.



12. To scrap a disposable cylinder, the internal cylinder pressure should bereduced to

at least

ANS -
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0 psig.

13. Manifold gauge sets are often color coded, when this is done, the high pressure

gauge is color coded

- Red.

ANS

14. In general, blended refrigerants should be charged

ANS -

as a liquid.

15. Blended refrigerants leak from a system

ANS -

in uneven amounts due to differentvapor pressures.

16. Which of the following gases help form the earth's protective shield? -

Stratospheric Ozone

ANS

17. In a refrigerant system, the device that changes a low pressure vapor to ahigh

pressure vapor is the

ANS - compressor.


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