EPA 608 CORE UNIVERSAL EXAM WITH EXPERT
DETAILED QUESTIONS AND 100% CORRECT
VERIFIED ANSWERS ALL GRADED A+
Refrigeration technicians who violate the Clean Air Act can: -
............ANSWER.............. D) all of the above.
After 1995, any supplies of CFC refrigerant to service existing units in the USA
can only come from: - ............ANSWER.............. A) recovery and recycling.
Refrigerant that is recovered can be returned to: - ............ANSWER.............. A)
the same system or other systems owned by the same person without restriction.
Refrigerant can not be called "reclaimed" unless it: - ............ANSWER.............. 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: - ............ANSWER.............. 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? - ............ANSWER.............. 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.
1|Page
,A system is considered dehydrated when: - ............ANSWER.............. A) the
vacuum indicator shows you have reached and held the required finished vacuum.
Disposable refrigerant containers are used for _______ refrigerant. -
............ANSWER.............. C) virgin
Which refrigerant is an HCFC? - ............ANSWER.............. A) R-124
What statement is true about an azeotropic refrigerant mixture? -
............ANSWER.............. 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? - ............ANSWER.............. 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: - ............ANSWER.............. A) 0 psig.
Manifold gauge sets are often color coded, when this is done, the high pressure
gauge is color coded: - ............ANSWER.............. A) red.
In general, blended refrigerants should be charged: - ............ANSWER.............. C)
as a liquid.
Blended refrigerants leak from a system: - ............ANSWER.............. B) in uneven
amounts due to different vapor pressures.
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, Which of the following gases help form the earth's protective shield? -
............ANSWER.............. D) Stratospheric Ozone
In a refrigeration system, the device that changes a low pressure vapor to a high
pressure vapor is the: - ............ANSWER.............. C) compressor.
. Data shows that chlorine in the stratosphere comes mainly from CFCs rather than
from natural sources such as volcanoes because: - ............ANSWER.............. D)
All of the above.
Which atom of the CFC molecule causes ozone depletion? -
............ANSWER.............. B) chlorine
The ozone layer protects the earth from: - ............ANSWER.............. C) ultraviolet
radiation from the sun.
When using with any solvent, cleaner, chemical or refrigerant, you should review:
- ............ANSWER.............. 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? -
............ANSWER.............. B) $10,000
The Montreal Protocol is: - ............ANSWER.............. D) a treaty among nations
that controls production of CFC's and HCFC's.
Which refrigerant is an HCFC? - ............ANSWER.............. A) R-123
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DETAILED QUESTIONS AND 100% CORRECT
VERIFIED ANSWERS ALL GRADED A+
Refrigeration technicians who violate the Clean Air Act can: -
............ANSWER.............. D) all of the above.
After 1995, any supplies of CFC refrigerant to service existing units in the USA
can only come from: - ............ANSWER.............. A) recovery and recycling.
Refrigerant that is recovered can be returned to: - ............ANSWER.............. A)
the same system or other systems owned by the same person without restriction.
Refrigerant can not be called "reclaimed" unless it: - ............ANSWER.............. 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: - ............ANSWER.............. 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? - ............ANSWER.............. 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.
1|Page
,A system is considered dehydrated when: - ............ANSWER.............. A) the
vacuum indicator shows you have reached and held the required finished vacuum.
Disposable refrigerant containers are used for _______ refrigerant. -
............ANSWER.............. C) virgin
Which refrigerant is an HCFC? - ............ANSWER.............. A) R-124
What statement is true about an azeotropic refrigerant mixture? -
............ANSWER.............. 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? - ............ANSWER.............. 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: - ............ANSWER.............. A) 0 psig.
Manifold gauge sets are often color coded, when this is done, the high pressure
gauge is color coded: - ............ANSWER.............. A) red.
In general, blended refrigerants should be charged: - ............ANSWER.............. C)
as a liquid.
Blended refrigerants leak from a system: - ............ANSWER.............. B) in uneven
amounts due to different vapor pressures.
2|Page
, Which of the following gases help form the earth's protective shield? -
............ANSWER.............. D) Stratospheric Ozone
In a refrigeration system, the device that changes a low pressure vapor to a high
pressure vapor is the: - ............ANSWER.............. C) compressor.
. Data shows that chlorine in the stratosphere comes mainly from CFCs rather than
from natural sources such as volcanoes because: - ............ANSWER.............. D)
All of the above.
Which atom of the CFC molecule causes ozone depletion? -
............ANSWER.............. B) chlorine
The ozone layer protects the earth from: - ............ANSWER.............. C) ultraviolet
radiation from the sun.
When using with any solvent, cleaner, chemical or refrigerant, you should review:
- ............ANSWER.............. 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? -
............ANSWER.............. B) $10,000
The Montreal Protocol is: - ............ANSWER.............. D) a treaty among nations
that controls production of CFC's and HCFC's.
Which refrigerant is an HCFC? - ............ANSWER.............. A) R-123
3|Page
