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1. Refrigeration technicians who violate the Clean Lose their EPA certification, be
Air Act can: - fined, be required to appear in
Federal court.
2. After 1995, any supplies of CFC refrigerants to recovery and recycling.
service existing units in the USA can only come
from: -
3. Refrigerant that is recovered can be returned to: the same system or other systems
- owned by the same person without
restriction.
4. Refrigerant can not be called "reclaimed" unless has been chemically analyzed and
it: - . the refrigerant meets the ARI-700
standard.
5. The EPA can require a technician to demonstrate revocation of the technicians certi-
their ability to perform proper procedures for fication.
recovering and/or recycling refrigerant. Failure
to demonstrate competency can result in: -
6. What characteristic(s) of CFCs make them more Refrigerants that contain chlorine
likely to reach the stratosphere than most other but not hydrogen are so stable
compounds containing chlorine? - that they do not break down in the
lower atmosphere after being re-
leased. The chlorine or bromine re-
acts with the ozone, causing it to
change back to oxygen, thus de-
stroying the ozone layer.
7. A system is considered dehydrated when: - the vacuum indicator shows you
have reached and held the re-
quired finished vacuum.
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8. Disposable refrigerant containers are used for virgin refrigerant
______
9. Which refrigerant is an HCFC? - R-123, R-124, R-22
10. What statement is true about an azeotropic re- It is a mixture that acts like a sin-
frigerant mixture? - gle-component refrigerant over its
entire range.
11. Chlorofluorocarbos (CFCs) and hydrochlorofluo- It is a mixture that acts like a sin-
rocarbons (HCFCs) have which of the following gle-component refrigerant over its
in common? - entire range.
12. To scrap a disposable cylinder, the internal cylin- 0 psig.
der pressure should be reduced to at least: -
13. Manifold gauge sets are often color coded,
when this is done, the high pressure gauge is
color coded: - Red.
14. In general, blended refrigerants should be as a liquid.
charged: -
15. Blended refrigerants leak from a system: - in uneven amounts due to different
vapor pressures.
16. Which of the following gases help form the
earth's protective shield? - Stratospheric Ozone
17. In a refrigerant system, the device that changes
a low pressure vapor to a high pressure vapor is
the: - compressor.
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18. Data shows that chlorine in the stratosphere
comes mainly from CFCs rather than from nat-
ural sources such as volcanoes because: - The
rise in the amount of chlorine in the stratos-
phere matches the rise in the amount of fluo-
rine, which has different natural sources than
chlorine; The rise in the amount of chlorine in
the stratosphere matches the rise in CFC emis-
sions; Air samples taken from the stratosphere
over erupting volcanoes show that volcanoes
contribute a small quantity of chlorine to the
stratosphere when compared to CFCs;
19. Which atom of the CFC molecule causes ozone
depletion? - chlorine
20. The ozone layer protects the earth from: - ultra-
violet radiation from the sun.
21. When using with any solvent, cleaner, chemi-
cal or refrigerant, you should review: - material
safety data sheets.
22. An award of up to what amount may be paid to
a person supplying information that leads to a
penalty against a technician who is intentionally
venting? - 10,000
23. The Montreal Protocol is: - a treaty among
nations that controls production of CFCs and
HCFCs.
24.