EPA 608 STUDY MATERIAL CORE TYPE 1 2 AND 3
TESTED QUESTIONS AND COMPLETE SOLUTIONS
Question 1.
What is the service procedure if the refrigerant in a recovery cylinder is suspected to be contaminated
ANSWER
Take a pressure reading of the cylinder
Question 2.
Which refrigerant contains a CFC
ANSWER
R-12
Question 3.
A refillable refrigerant cylinder must never be filled to more than ________ of its capacity by weight:
ANSWER
80%
Question 4.
What is the term for removing refrigerant in any condition from a system and storing it in an external
container without necessarily testing or processing it in anyway
ANSWER
Recovery
Question 5.
When operating refrigerant recovery or recycling equipment the following precautions should always
be followed
ANSWER
All of the above- including wear safety glasses wear protective gloves follow all safety
precautions for the equipment
,Question 6.
Refrigerant cylinders should always be
ANSWER
All of the above-free of rust and damage and color-coded to indicate the contents and secure
Question 7.
Which of the following repairs would always be considered "major" under EPA regulations
ANSWER
Replacement of an evaporator coil
Question 8.
Which chemicals are controlled by the Montreal protocol
ANSWER
All of the above - chlorofluorocarbons and hydrochlorofluorocarbons and halons
Question 9.
__________ is the process that returns refrigerant to new product specifications and that requires
chemical analysis
ANSWER
Reclaim
Question 10.
What is the Montreal protocol
ANSWER
An international treaty that addresses O'zone depleting substances and their alternatives
Question 11.
Which of the following is a high pressure refrigerant under EPA's refrigerant recycling regulations
ANSWER
R-22
,Question 12.
Refrigerant that enters the compressor under normal operating conditions is a
ANSWER
Low pressure vapor
Question 13.
An example of an HFC refrigerant is:
ANSWER
R-134a
Question 14.
An ozone molecule contains
ANSWER
Three oxygen atoms
Question 15.
To determine the maximum allowable pressure to use when checking a system check:
ANSWER
The design pressure on the equipment nameplate
Question 16.
Recovery equipment that relies upon the compressor in the system would be considered:
ANSWER
System-dependent
Question 17.
CFC refrigerant are so named because they contain the elements:
ANSWER
chlorine fluorine and carbon
, Question 18.
Which ASHRAE classification means slightly flammable
ANSWER
A2L
Question 19.
Blended refrigerant leak from a system:
ANSWER
In uneven amounts due to different vapor pressures
Question 20.
To process refrigerant to a level equal to new (virgin) product specifications as determined by chemical
analysis defines
ANSWER
Reclaiming
Question 21.
Which of the following refrigerant releases is considered a violation of the prohibition on venting
ANSWER
Release of mixtures of nitrogen and refrigerant that result from adding nitrogen to a fully
charged appliance to leak test the appliance
Question 22.
When evacuating a system the hoses should be
ANSWER
As short in length and as large in diameter as possible
Question 23.
A ternary refrigerant blend is a____________ part mixture
ANSWER
Three-part
TESTED QUESTIONS AND COMPLETE SOLUTIONS
Question 1.
What is the service procedure if the refrigerant in a recovery cylinder is suspected to be contaminated
ANSWER
Take a pressure reading of the cylinder
Question 2.
Which refrigerant contains a CFC
ANSWER
R-12
Question 3.
A refillable refrigerant cylinder must never be filled to more than ________ of its capacity by weight:
ANSWER
80%
Question 4.
What is the term for removing refrigerant in any condition from a system and storing it in an external
container without necessarily testing or processing it in anyway
ANSWER
Recovery
Question 5.
When operating refrigerant recovery or recycling equipment the following precautions should always
be followed
ANSWER
All of the above- including wear safety glasses wear protective gloves follow all safety
precautions for the equipment
,Question 6.
Refrigerant cylinders should always be
ANSWER
All of the above-free of rust and damage and color-coded to indicate the contents and secure
Question 7.
Which of the following repairs would always be considered "major" under EPA regulations
ANSWER
Replacement of an evaporator coil
Question 8.
Which chemicals are controlled by the Montreal protocol
ANSWER
All of the above - chlorofluorocarbons and hydrochlorofluorocarbons and halons
Question 9.
__________ is the process that returns refrigerant to new product specifications and that requires
chemical analysis
ANSWER
Reclaim
Question 10.
What is the Montreal protocol
ANSWER
An international treaty that addresses O'zone depleting substances and their alternatives
Question 11.
Which of the following is a high pressure refrigerant under EPA's refrigerant recycling regulations
ANSWER
R-22
,Question 12.
Refrigerant that enters the compressor under normal operating conditions is a
ANSWER
Low pressure vapor
Question 13.
An example of an HFC refrigerant is:
ANSWER
R-134a
Question 14.
An ozone molecule contains
ANSWER
Three oxygen atoms
Question 15.
To determine the maximum allowable pressure to use when checking a system check:
ANSWER
The design pressure on the equipment nameplate
Question 16.
Recovery equipment that relies upon the compressor in the system would be considered:
ANSWER
System-dependent
Question 17.
CFC refrigerant are so named because they contain the elements:
ANSWER
chlorine fluorine and carbon
, Question 18.
Which ASHRAE classification means slightly flammable
ANSWER
A2L
Question 19.
Blended refrigerant leak from a system:
ANSWER
In uneven amounts due to different vapor pressures
Question 20.
To process refrigerant to a level equal to new (virgin) product specifications as determined by chemical
analysis defines
ANSWER
Reclaiming
Question 21.
Which of the following refrigerant releases is considered a violation of the prohibition on venting
ANSWER
Release of mixtures of nitrogen and refrigerant that result from adding nitrogen to a fully
charged appliance to leak test the appliance
Question 22.
When evacuating a system the hoses should be
ANSWER
As short in length and as large in diameter as possible
Question 23.
A ternary refrigerant blend is a____________ part mixture
ANSWER
Three-part
