EPA 608 UNIVERSAL questions with accurate
solutions
Refrigeration technicians who violate the Clean Air Act can: - - ANSWER Lose their EPA
certification, be fined, be required to appear in Federal court.
After 1995, any supplies of CFC refrigerants to service existing units in the USA can only come
from: - - ANSWER recovery and recycling.
Refrigerant that is recovered can be returned to: - - ANSWER the same system or other systems
owned by the same person without restriction.
Refrigerant can not be called "reclaimed" unless it: - . - ANSWER has been chemically analyzed
and the refrigerant meets the ARI-700 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 revocation of the technicians certification.
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.
A system is considered dehydrated when: - - ANSWER the vacuum indicator shows you have
reached and held the required finished vacuum.
Disposable refrigerant containers are used for ______ - ANSWER virgin refrigerant
,Which refrigerant is an HCFC? - - ANSWER R-123, R-124, R-22
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.
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.
To scrap a disposable cylinder, the internal cylinder pressure should be reduced to at least: - -
ANSWER 0 psig.
Manifold gauge sets are often color coded, when this is done, the high pressure gauge is color
coded: - Red. - ANSWER
In general, blended refrigerants should be charged: - - ANSWER as a liquid.
Blended refrigerants leak from a system: - - ANSWER in uneven amounts due to different vapor
pressures.
Which of the following gases help form the earth's protective shield? - Stratospheric Ozone -
ANSWER
In a refrigerant system, the device that changes a low pressure vapor to a high pressure vapor is
the: - compressor. - ANSWER
Data shows that chlorine in the stratosphere comes mainly from CFCs rather than from natural
sources such as volcanoes because: - The rise in the amount of chlorine in the stratosphere
, matches the rise in the amount of fluorine, which has different natural sources than chlorine;
The rise in the amount of chlorine in the stratosphere matches the rise in CFC emissions; 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; - ANSWER
Which atom of the CFC molecule causes ozone depletion? - chlorine - ANSWER
The ozone layer protects the earth from: - ultraviolet radiation from the sun. - ANSWER
When using with any solvent, cleaner, chemical or refrigerant, you should review: - material
safety data sheets. - ANSWER
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 - ANSWER
The Montreal Protocol is: - a treaty among nations that controls production of CFCs and HCFCs. -
ANSWER
Which refrigerant is an HCFC? - R-123, R-22, R-124 - ANSWER
What is one of the most serious results of damage to the ozone layer? - increases in human skin
cancer - ANSWER
Of the refrigerants listed below, which has the lowest ozone depletion potential (ODP)? - R-22 -
ANSWER
To determine the maximum allowable pressure to use when checking a system, check: - the
design pressure on the equipment nameplate - ANSWER
solutions
Refrigeration technicians who violate the Clean Air Act can: - - ANSWER Lose their EPA
certification, be fined, be required to appear in Federal court.
After 1995, any supplies of CFC refrigerants to service existing units in the USA can only come
from: - - ANSWER recovery and recycling.
Refrigerant that is recovered can be returned to: - - ANSWER the same system or other systems
owned by the same person without restriction.
Refrigerant can not be called "reclaimed" unless it: - . - ANSWER has been chemically analyzed
and the refrigerant meets the ARI-700 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 revocation of the technicians certification.
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.
A system is considered dehydrated when: - - ANSWER the vacuum indicator shows you have
reached and held the required finished vacuum.
Disposable refrigerant containers are used for ______ - ANSWER virgin refrigerant
,Which refrigerant is an HCFC? - - ANSWER R-123, R-124, R-22
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.
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.
To scrap a disposable cylinder, the internal cylinder pressure should be reduced to at least: - -
ANSWER 0 psig.
Manifold gauge sets are often color coded, when this is done, the high pressure gauge is color
coded: - Red. - ANSWER
In general, blended refrigerants should be charged: - - ANSWER as a liquid.
Blended refrigerants leak from a system: - - ANSWER in uneven amounts due to different vapor
pressures.
Which of the following gases help form the earth's protective shield? - Stratospheric Ozone -
ANSWER
In a refrigerant system, the device that changes a low pressure vapor to a high pressure vapor is
the: - compressor. - ANSWER
Data shows that chlorine in the stratosphere comes mainly from CFCs rather than from natural
sources such as volcanoes because: - The rise in the amount of chlorine in the stratosphere
, matches the rise in the amount of fluorine, which has different natural sources than chlorine;
The rise in the amount of chlorine in the stratosphere matches the rise in CFC emissions; 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; - ANSWER
Which atom of the CFC molecule causes ozone depletion? - chlorine - ANSWER
The ozone layer protects the earth from: - ultraviolet radiation from the sun. - ANSWER
When using with any solvent, cleaner, chemical or refrigerant, you should review: - material
safety data sheets. - ANSWER
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 - ANSWER
The Montreal Protocol is: - a treaty among nations that controls production of CFCs and HCFCs. -
ANSWER
Which refrigerant is an HCFC? - R-123, R-22, R-124 - ANSWER
What is one of the most serious results of damage to the ozone layer? - increases in human skin
cancer - ANSWER
Of the refrigerants listed below, which has the lowest ozone depletion potential (ODP)? - R-22 -
ANSWER
To determine the maximum allowable pressure to use when checking a system, check: - the
design pressure on the equipment nameplate - ANSWER
