During vacuum evacuation, how quickly should a system be moved if the unit is positioned incorrectly?

When performing a vacuum evacuation on an air conditioning system, it is essential to ensure that the system is not moved too quickly, which can disrupt the process. The correct method of moving the unit is to shift it every 1 inch every 2 seconds. This approach allows for careful monitoring of the vacuum level and ensures that any remaining moisture and air are adequately removed from the system.

Moving the unit in this manner ensures that the evacuation is effective without introducing unnecessary turbulence within the system, which can compromise the integrity of the vacuum and lead to incomplete evacuation. Additionally, this method allows the technician to observe changes in the vacuum gauge more effectively, providing instant feedback on the impact of the movement on the vacuum pressure.

In contrast, options suggesting more rapid movement may risk causing efficiency issues during evacuation and can lead to inadequate removal of moisture and non-condensables, which are detrimental to the performance and longevity of the air conditioning system. Such rapid movements can also lead to improper alignment and can compromise the seal of the vacuum, resulting in less effective evacuation overall.