EPA 608 (CORE) Exam with Correct
Answers
When moisture exists in an operating system, what is most likely to occur? - correct
Answers-Acid will form.
What factor(s) affects the speed of evacuation? - correct Answers-1) The size of the
equipment being evacuated.
2)The ambient temperature.
3) The amount of moisture in the system
A system is considered dehydrated when? - correct Answers-The vacuum indicator
shows you have reached & held the required finished vacuum.
The over-evacuation of a system: - correct Answers-Does not occur.
The size (capacity) of the vacuum pump & the size of the suction line used will
determine what? - correct Answers-The length of dehydration time.
A system is dehydrated to do what? - correct Answers-Remove water & water vapor.
To obtain an accurate vacuum reading during system evacuation, the system vacuum
gauge should be located: - correct Answers-As far from the vacuum pump as possible.
To scrap a disposable cylinder, the internal cylinder pressure should be reduced to at
least what? - correct Answers-0 psig
Never use an open flame to heat a refrigerant tank because? - correct Answers-1) It can
result in venting refrigerant to the atmosphere.
2)The tank may explode, causing serious injury to people nearby.
3) Refrigerant in the tank may decompose, forming a toxic material.
When operating refrigerant recovery or recycling equipment, the following precautions
should always be followed. - correct Answers-1) Wear safety glasses.
2) Wear protective gloves.
Answers
When moisture exists in an operating system, what is most likely to occur? - correct
Answers-Acid will form.
What factor(s) affects the speed of evacuation? - correct Answers-1) The size of the
equipment being evacuated.
2)The ambient temperature.
3) The amount of moisture in the system
A system is considered dehydrated when? - correct Answers-The vacuum indicator
shows you have reached & held the required finished vacuum.
The over-evacuation of a system: - correct Answers-Does not occur.
The size (capacity) of the vacuum pump & the size of the suction line used will
determine what? - correct Answers-The length of dehydration time.
A system is dehydrated to do what? - correct Answers-Remove water & water vapor.
To obtain an accurate vacuum reading during system evacuation, the system vacuum
gauge should be located: - correct Answers-As far from the vacuum pump as possible.
To scrap a disposable cylinder, the internal cylinder pressure should be reduced to at
least what? - correct Answers-0 psig
Never use an open flame to heat a refrigerant tank because? - correct Answers-1) It can
result in venting refrigerant to the atmosphere.
2)The tank may explode, causing serious injury to people nearby.
3) Refrigerant in the tank may decompose, forming a toxic material.
When operating refrigerant recovery or recycling equipment, the following precautions
should always be followed. - correct Answers-1) Wear safety glasses.
2) Wear protective gloves.
