EPA 608 EXAM TEST PAPER QUESTIONS SOLUTIONS GRADED A PLUS
Question:
What factor(s) affects the speed of evacuation?
Answer:
1) The size of the equipment being evacuated. 2)The ambient temperature. 3) The amount of
moisture in the system
Question:
A system is considered dehydrated when?
Answer:
The vacuum indicator shows you have reached & held the required finished vacuum.
Question:
The over-evacuation of a system:
Answer:
Does not occur.
Question:
The size (capacity) of the vacuum pump & the size of the suction line used will determine what?
Answer:
The length of dehydration time.
Question:
A system is dehydrated to do what?
, Answer:
Remove water & water vapor.
Question:
To obtain an accurate vacuum reading during system evacuation, the system vacuum gauge should
be located:
Answer:
As far from the vacuum pump as possible.
Question:
To scrap a disposable cylinder, the internal cylinder pressure should be reduced to at least what?
Answer:
0 psig
Question:
Never use an open flame to heat a refrigerant tank because?
Answer:
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.
Question:
When operating refrigerant recovery or recycling equipment, the following precautions should
always be followed.
Answer:
1) Wear safety glasses. 2) Wear protective gloves. 3) Follow all safety precautions for the
equipment.
Question:
Question:
What factor(s) affects the speed of evacuation?
Answer:
1) The size of the equipment being evacuated. 2)The ambient temperature. 3) The amount of
moisture in the system
Question:
A system is considered dehydrated when?
Answer:
The vacuum indicator shows you have reached & held the required finished vacuum.
Question:
The over-evacuation of a system:
Answer:
Does not occur.
Question:
The size (capacity) of the vacuum pump & the size of the suction line used will determine what?
Answer:
The length of dehydration time.
Question:
A system is dehydrated to do what?
, Answer:
Remove water & water vapor.
Question:
To obtain an accurate vacuum reading during system evacuation, the system vacuum gauge should
be located:
Answer:
As far from the vacuum pump as possible.
Question:
To scrap a disposable cylinder, the internal cylinder pressure should be reduced to at least what?
Answer:
0 psig
Question:
Never use an open flame to heat a refrigerant tank because?
Answer:
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.
Question:
When operating refrigerant recovery or recycling equipment, the following precautions should
always be followed.
Answer:
1) Wear safety glasses. 2) Wear protective gloves. 3) Follow all safety precautions for the
equipment.
Question:
