EPA 608 Core Universal 2024 100% Sure
Refrigeration technicians who violate the Clean Air Act can: -Correct Ans-D) all of the above.
After 1995, any supplies of CFC refrigerant to service existing units in the USA can only come from: -Correct Ans-A) recovery and recycling.
Refrigerant that i...
refrigeration technicians who violate the clean ai
after 1995 any supplies of cfc refrigerant to ser
after 1995 any supplies of cfc refrigerant to ser
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EPA 608 Core Universal 2024 100% Sure
Refrigeration technicians who violate the Clean Air Act can: -Correct Ans-D) all of the
above.
After 1995, any supplies of CFC refrigerant to service existing units in the USA can only
come from: -Correct Ans-A) recovery and recycling.
Refrigerant that is recovered can be returned to: -Correct Ans-A) the same system or
other systems owned by the same person without restriction.
Refrigerant can not be called "reclaimed" unless it: -Correct Ans-B) has been chemically
analyzed and the refrigerant meets the ARI-700 purity standard.
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: -Correct Ans-A) revocation of the technician's certification.
What characteristic(s) of CFCs make them more likely to reach the stratosphere than
most other compounds containing chlorine? -Correct 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.
A system is considered dehydrated when: -Correct Ans-A) the vacuum indicator shows
you have reached and held the required finished vacuum.
Disposable refrigerant containers are used for _______ refrigerant. -Correct Ans-C)
virgin
,Which refrigerant is an HCFC? -Correct Ans-A) R-124
What statement is true about an azeotropic refrigerant mixture? -Correct Ans-D) It is a
mixture that acts like a single-component refrigerant over its entire range.
Chlorofluorocarbons (CFCs) and hydrochlorofluorocarbons (HCFCs) have which of the
following in common? -Correct Ans-D) They must be recovered before opening or
disposing of appliances.
To scrap a disposable cylinder, the internal cylinder pressure should be reduced to at
least: -Correct Ans-A) 0 psig.
Manifold gauge sets are often color coded, when this is done, the high pressure gauge is
color coded: -Correct Ans-A) red.
In general, blended refrigerants should be charged: -Correct Ans-C) as a liquid.
Blended refrigerants leak from a system: -Correct Ans-B) in uneven amounts due to
different vapor pressures.
Which of the following gases help form the earth's protective shield? -Correct Ans-D)
Stratospheric Ozone
In a refrigeration system, the device that changes a low pressure vapor to a high
pressure vapor is the: -Correct Ans-C) compressor.
. Data shows that chlorine in the stratosphere comes mainly from CFCs rather than from
natural sources such as volcanoes because: -Correct Ans-D) All of the above.
, Which atom of the CFC molecule causes ozone depletion? -Correct Ans-B) chlorine
The ozone layer protects the earth from: -Correct Ans-C) ultraviolet radiation from the
sun.
When using with any solvent, cleaner, chemical or refrigerant, you should review: -
Correct Ans-C) material safety data sheets.
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? -Correct Ans-B)
$10,000
The Montreal Protocol is: -Correct Ans-D) a treaty among nations that controls
production of CFC's and HCFC's.
Which refrigerant is an HCFC? -Correct Ans-A) R-123
What is one of the most serious results of damage to the ozone layer? -Correct Ans-C)
increases in human skin cancer
Of the refrigerants listed below, which has the lowest ozone depletion potential? -
Correct Ans-A) R-22
To determine the maximum allowable pressure to use when checking a system, check: -
Correct Ans-C) the design pressure on the equipment nameplate
Ozone depletion potential, or "ODP," is: -Correct Ans-C) A measure of the ability of CFCs'
and HCFCs' to destroy ozone.
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