EPA 608 (CORE) Exam questions with correct answers

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