EPA 608 Core practice Exam Questions
and Answers
To process refrigerant to a level that is equal to new product specifications as - correct
Answers-Reclaiming
The low side test pressure data plate value should be used by a technician to determine
a safe pressure for - correct Answers-Leak testing
Silicone elastomers are not compatible with what refrigerant - correct Answers-HFC
How many molecules does an ozone molecule contain? - correct Answers-3 oxygen
atoms
Recover any remaining refrigerant and then render the cylinder useless, then recycle
the metal is the proper disposal method for; - correct Answers-disposable cylinders
Which refrigerant is an HCFC? - correct Answers-R-22
Which refrigerant is an HFC - correct Answers-R-410a
Which refrigerant is a CFC - correct Answers-R-12
Which refrigerant has GWP of 1? - correct Answers-R-134a
Reusable refrigerant containers that are normally under pressure above 15 psig, must
be hydrostatically tested and date stamped every: - correct Answers-5 years
The compressor - correct Answers-changes a low pressure gas to a high pressure gas
What changes high pressure gas to high pressure liquid - correct Answers-The
condenser
Crop loss, eye disease, and skin cancer have been attributed to; - correct Answers-
Ozone depletion
Which type of refrigerant contains no chlorine? - correct Answers-HFC/R-23
The three R's - correct Answers-Recover, Recycle, Reclaim
, Definition of recover? - correct Answers-remove refrigerant in any condition from an
appliance and store it in an external container without necessarily testing or processing
it in any way."
Definition of recycle - correct Answers-—cleaning the recovered refrigerant. —by using
oil separation
—should only be used on the same owner's equipment .
Definition of reclaim - correct Answers-complicated process, often performed by the
manufacturer or a certified company which has the specialized machines needed
Why is recovery important? - correct Answers-in order to protect the environment and
human health. Depletion of ozone hurts crops, marine life and forests and causes eye
problems and skin cancer.
A refrigerant cylinder designed to hold recovered refrigerant are what colors - correct
Answers-Grey body, Yellow top
Before shipping used refrigerant cylinders it must meet - correct Answers-Department of
Transportation standards
What does ASHRAE stand for - correct Answers-American Society of Heating,
Refrigerating and Air-Conditioning Engineers
Which ASHRAE classification means slightly flammable - correct Answers-A2L
Disposable cylinders are only used with what type of refrigerant? - correct Answers-
Virgin refrigerant
Recovery cylinder must not be filled above _____% of its capacity by weight - correct
Answers-80
Recovery cylinders must be hydrostatically tested and date stamped every how many
years? - correct Answers-5
When pressuring a system with nitrogen you should - correct Answers-Charge it
through a regulator
Insert a relief valve downstream line from the pressure regulator
Never install in series
Never pressurize a system with - correct Answers-Oxygen or compressed air
It is Critical to inspect Schrader valve for? - correct Answers-Leaks bends cracks
When moisture is present in a refrigeration system, it will react with the refrigerant and
the oil to form ____. - correct Answers-Hydrochloric and hydrofluoric acid
and Answers
To process refrigerant to a level that is equal to new product specifications as - correct
Answers-Reclaiming
The low side test pressure data plate value should be used by a technician to determine
a safe pressure for - correct Answers-Leak testing
Silicone elastomers are not compatible with what refrigerant - correct Answers-HFC
How many molecules does an ozone molecule contain? - correct Answers-3 oxygen
atoms
Recover any remaining refrigerant and then render the cylinder useless, then recycle
the metal is the proper disposal method for; - correct Answers-disposable cylinders
Which refrigerant is an HCFC? - correct Answers-R-22
Which refrigerant is an HFC - correct Answers-R-410a
Which refrigerant is a CFC - correct Answers-R-12
Which refrigerant has GWP of 1? - correct Answers-R-134a
Reusable refrigerant containers that are normally under pressure above 15 psig, must
be hydrostatically tested and date stamped every: - correct Answers-5 years
The compressor - correct Answers-changes a low pressure gas to a high pressure gas
What changes high pressure gas to high pressure liquid - correct Answers-The
condenser
Crop loss, eye disease, and skin cancer have been attributed to; - correct Answers-
Ozone depletion
Which type of refrigerant contains no chlorine? - correct Answers-HFC/R-23
The three R's - correct Answers-Recover, Recycle, Reclaim
, Definition of recover? - correct Answers-remove refrigerant in any condition from an
appliance and store it in an external container without necessarily testing or processing
it in any way."
Definition of recycle - correct Answers-—cleaning the recovered refrigerant. —by using
oil separation
—should only be used on the same owner's equipment .
Definition of reclaim - correct Answers-complicated process, often performed by the
manufacturer or a certified company which has the specialized machines needed
Why is recovery important? - correct Answers-in order to protect the environment and
human health. Depletion of ozone hurts crops, marine life and forests and causes eye
problems and skin cancer.
A refrigerant cylinder designed to hold recovered refrigerant are what colors - correct
Answers-Grey body, Yellow top
Before shipping used refrigerant cylinders it must meet - correct Answers-Department of
Transportation standards
What does ASHRAE stand for - correct Answers-American Society of Heating,
Refrigerating and Air-Conditioning Engineers
Which ASHRAE classification means slightly flammable - correct Answers-A2L
Disposable cylinders are only used with what type of refrigerant? - correct Answers-
Virgin refrigerant
Recovery cylinder must not be filled above _____% of its capacity by weight - correct
Answers-80
Recovery cylinders must be hydrostatically tested and date stamped every how many
years? - correct Answers-5
When pressuring a system with nitrogen you should - correct Answers-Charge it
through a regulator
Insert a relief valve downstream line from the pressure regulator
Never install in series
Never pressurize a system with - correct Answers-Oxygen or compressed air
It is Critical to inspect Schrader valve for? - correct Answers-Leaks bends cracks
When moisture is present in a refrigeration system, it will react with the refrigerant and
the oil to form ____. - correct Answers-Hydrochloric and hydrofluoric acid
