When moisture exists in an operating system, what is most likely to occur? -Correct Ans-
Acid will form.
What factor(s) affects the speed of evacuation? -Correct Ans-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 Ans-The vacuum indicator shows
you have reached & held the required finished vacuum.
The over-evacuation of a system: -Correct Ans-Does not occur.
The size (capacity) of the vacuum pump & the size of the suction line used will
determine what? -Correct Ans-The length of dehydration time.
A system is dehydrated to do what? -Correct Ans-Remove water & water vapor.
To obtain an accurate vacuum reading during system evacuation, the system vacuum
gauge should be located: -Correct Ans-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 Ans-0 psig