EPA 608 Universal Exam Questions and
Answers Verified Solutions Latest
Update
Question:
After 1995, any supplies of CFC refrigerants to service existing units in the USA can
only come from
Answer:
recovery and recycling.
Question:
Refrigerant that is recovered can be returned to
Answer:
the same system or other systems owned by the same person without restriction.
Question:
Refrigerant can not be called "reclaimed" unless it: - .
Answer:
has been chemically analyzed and the refrigerant meets the ARI-700 standard.
Question:
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
Answer:
revocation of the technicians certification.
,Question:
What characteristic(s) of CFCs make them more likely to reach the stratosphere than
most other compounds containing chlorine?
Answer:
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 the ozone, causing it to change back to oxygen, thus destroying the ozone
layer.
Question:
A system is considered dehydrated when
Answer:
the vacuum indicator shows you have reached and held the required finished vacuum.
Question:
Disposable refrigerant containers are used for ______
Answer:
virgin refrigerant
Question:
Which refrigerant is an HCFC?
Answer:
R-123, R-124, R-22
Question:
What statement is true about an azeotropic refrigerant mixture?
Answer:
It is a mixture that acts like a single-component refrigerant over its entire range.
, Question:
Chlorofluorocarbos (CFCs) and hydrochlorofluorocarbons (HCFCs) have which of the
following in common?
Answer:
It is a mixture that acts like a single-component refrigerant over its entire range.
Question:
To scrap a disposable cylinder, the internal cylinder pressure should be reduced to at
least
Answer:
0 psig.
Question:
Manifold gauge sets are often color coded, when this is done, the high pressure gauge
is color coded: - Red.
Answer:
Question:
In general, blended refrigerants should be charged
Answer:
as a liquid.
Question:
Blended refrigerants leak from a system
Answer:
in uneven amounts due to different vapor pressures.
Question:
Which of the following gases help form the earth's protective shield? - Stratospheric
Ozone
Answer:
Answers Verified Solutions Latest
Update
Question:
After 1995, any supplies of CFC refrigerants to service existing units in the USA can
only come from
Answer:
recovery and recycling.
Question:
Refrigerant that is recovered can be returned to
Answer:
the same system or other systems owned by the same person without restriction.
Question:
Refrigerant can not be called "reclaimed" unless it: - .
Answer:
has been chemically analyzed and the refrigerant meets the ARI-700 standard.
Question:
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
Answer:
revocation of the technicians certification.
,Question:
What characteristic(s) of CFCs make them more likely to reach the stratosphere than
most other compounds containing chlorine?
Answer:
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 the ozone, causing it to change back to oxygen, thus destroying the ozone
layer.
Question:
A system is considered dehydrated when
Answer:
the vacuum indicator shows you have reached and held the required finished vacuum.
Question:
Disposable refrigerant containers are used for ______
Answer:
virgin refrigerant
Question:
Which refrigerant is an HCFC?
Answer:
R-123, R-124, R-22
Question:
What statement is true about an azeotropic refrigerant mixture?
Answer:
It is a mixture that acts like a single-component refrigerant over its entire range.
, Question:
Chlorofluorocarbos (CFCs) and hydrochlorofluorocarbons (HCFCs) have which of the
following in common?
Answer:
It is a mixture that acts like a single-component refrigerant over its entire range.
Question:
To scrap a disposable cylinder, the internal cylinder pressure should be reduced to at
least
Answer:
0 psig.
Question:
Manifold gauge sets are often color coded, when this is done, the high pressure gauge
is color coded: - Red.
Answer:
Question:
In general, blended refrigerants should be charged
Answer:
as a liquid.
Question:
Blended refrigerants leak from a system
Answer:
in uneven amounts due to different vapor pressures.
Question:
Which of the following gases help form the earth's protective shield? - Stratospheric
Ozone
Answer:
