A multiple evacuation means that ____.
A) you connect three vacuum pumps simultaneously to a refrigeration system and pull a vacuum
B) you pull a vacuum on three different systems at the same time
C) you pull a vacuum on a refrigeration system more than once, allowing refrigerant or nitrogen into the system between each procedure
D) there must be more than one system operating before a vacuum can be pulled

Question

Quizplus · Accepted Answer

Multiple evacuation means that you pull a vacuum on a refrigeration system more than once, allowing refrigerant or nitrogen into the system between each procedure. This is done to ensure that all moisture and air is removed from the system, which is essential for proper functioning. It is important to note that multiple evacuation is different from connecting multiple vacuum pumps simultaneously to a refrigeration system (option A). Option B and D are not accurate descriptions of multiple evacuation.

A Multiple Evacuation Means That ____