©BRIGHTSTARS EXAM SOLUTIONS
10/21/2024 9:24 PM
HVAC LEVEL 2 MODULE 4 LEAK
DETECTION, EVACUATION,
RECOVERY AND CHARGING. Exam
Questions And Answers 100% Pass
The requirement for an equipment owner to repair a significant refrigerant leak within 30 days
can be waived if the owner? - answer✔Submits a plan to replace the unit within one year.
When setting up a nitrogen cylinder to pressurize a system for leak detection , the relief valve
between the nitrogen regulator and the gauge manifold should be set no higher than? -
answer✔150
When pressurizing a system for leak testing the only refrigerant that can be used as a trace gas
that can be used. - answer✔R22
When pressurizing a system for leak testing a safe maximum test pressure is typically ? -
answer✔125
Bulk refrigerant for the purpose of determining what size container must be purchased by an epa
certified technician is considered to be any container size equal to or over ? - answer✔Over 20
pounds
When using a self contained recovery unit to recover refrigerant vapor the discharge of the
recovery unit is connected to ? - answer✔Recovery cylinder
Which of the following situations typically prevents the use of the push pull method of
refrigerant recovery? - answer✔the system being recovered being recovered contains 7 pounds
of refrigerant.
The two primary approaches to evacuating systems are known as the ? - answer✔Deep vacuum
and triple evacuation method.
Moisture in the system reacts with refrigerant to form ? - answer✔Hydrochloric and hydrofluoric
acid
10/21/2024 9:24 PM
HVAC LEVEL 2 MODULE 4 LEAK
DETECTION, EVACUATION,
RECOVERY AND CHARGING. Exam
Questions And Answers 100% Pass
The requirement for an equipment owner to repair a significant refrigerant leak within 30 days
can be waived if the owner? - answer✔Submits a plan to replace the unit within one year.
When setting up a nitrogen cylinder to pressurize a system for leak detection , the relief valve
between the nitrogen regulator and the gauge manifold should be set no higher than? -
answer✔150
When pressurizing a system for leak testing the only refrigerant that can be used as a trace gas
that can be used. - answer✔R22
When pressurizing a system for leak testing a safe maximum test pressure is typically ? -
answer✔125
Bulk refrigerant for the purpose of determining what size container must be purchased by an epa
certified technician is considered to be any container size equal to or over ? - answer✔Over 20
pounds
When using a self contained recovery unit to recover refrigerant vapor the discharge of the
recovery unit is connected to ? - answer✔Recovery cylinder
Which of the following situations typically prevents the use of the push pull method of
refrigerant recovery? - answer✔the system being recovered being recovered contains 7 pounds
of refrigerant.
The two primary approaches to evacuating systems are known as the ? - answer✔Deep vacuum
and triple evacuation method.
Moisture in the system reacts with refrigerant to form ? - answer✔Hydrochloric and hydrofluoric
acid
