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EPA 608 Exam 2| Study Questions Correctly Answered!
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EPA 608 Exam 2| Study QuestionsCorrectly Answered!!
The Montreal Protocol is ________. - ANSWER n international treaty that addresses ozone-
depleting substances and their alternatives
Oxygen or compressed air should never be used to pressurize a system because ________ -
ANSWER oxygen or compressed air can explode when mixed with compressor oil or some
refrigerants
A ________ recovery device uses the compressor in the appliance and/or the pressure of the
refrigerant in the appliance. - ANSWER system-dependent
Department of Transportation (DOT) regulations require the ________ to be recorded on the
shipping paper for hazard class 2.2 Nonflammable Compressed Gases. - ANSWER number of
cylinders of each gas
Under normal conditions, refrigerant enters the compressor of a refrigeration system as a
________. - ANSWER low-pressure vapor
Which of the following is illegal? - ANSWER Knowingly releasing refrigerants during the service,
maintenance, repair, or disposal of appliances
Which refrigerant(s) must be recovered ________. - ANSWER all non-exempt refrigerants
What is a violation of the Clean Air Act or EPA's regulations? - ANSWER Failing to keep
required records
,Failing to meet the required evacuation levels before opening or disposing of appliances
Knowingly releasing CFC, HCFC, or HFC refrigerants while repairing appliances
During servicing of any refrigeration system, the refrigerant must be ________. - ANSWER
recovered
Which gas would cause the least damage when used for leak checking? - ANSWER Dry nitrogen
alone
Approved refrigerant recovery cylinders have ________ - ANSWER Yellow tops and gray bodies
What provides the cooling in a vapor compression refrigeration system? - ANSWER The
vaporization of the liquid refrigerant.
Which refrigerants is an HFO? - ANSWER R-1234yf
State and local governments ________. - ANSWER an make laws that are stricter requirements
than the federal regulations
________ to verify the allowable machine test pressure. - ANSWER Use the value on the system
nameplate
________ can be recovered into the same cylinder - ANSWER Only 1 refrigerant
What action violates the EPA's prohibition on venting? - ANSWER Opening the system without
properly recovering the refrigerant first
What does NOT require Section 608 certification? - ANSWER Rewiring a condenser fan
, How does the GWP of R-410A compare to carbon dioxide? - ANSWER The GWP of R-410A
is thousands of times greater.
Which refrigerant release is illegal? - ANSWER Venting refrigerant from an approved dual-
refrigerant recovery machine to switch working fluids.
Portable refillable tanks must meet ________ standards. - ANSWER Department of
Transportation
________ the speed of dehydration - ANSWER The size of the equipment being evacuated and
the size of the vacuum pump both affect
The ambient temperature affects
The moisture in the system affects
If technicians lose their certification card, they must ________. - ANSWER request a
replacement from the company that provided the certification
________ make(s) HFO refrigerants less flammable than HC refrigerants. - ANSWER Fluorine
Never fill a refillable refrigerant cylinder beyond ________ - ANSWER 80% of its capacity by
weight
________ is the removal of refrigerant from a system and storing it in a container without
testing or processing it in any way - ANSWER Recovering
The EPA refers to a "retrofit" as ________. - ANSWER a conversion of the system to use a
different refrigerant
Before recycling or discarding, a disposable cylinder should be ________. - ANSWER emptied to
0 psig and then rendered useless by puncturing or breaking off the valve
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