After refrigerant lines have been installed, they should be evacuated to a(n) ____ vacuum.
A) average
B) low
C) moderate
D) deep

Question

Quizplus · Accepted Answer

After refrigerant lines have been installed, they should be evacuated to a deep vacuum of at least 500 microns in order to remove any moisture, air, or other contaminants that can cause damage to the refrigeration system and reduce its efficiency. This is achieved by using a vacuum pump and micron gauge to monitor the pressure levels during the evacuation process. The other options (A, B, C) are not appropriate because they do not specify a specific vacuum level that is necessary for proper installation and operation of the refrigeration system.

After Refrigerant Lines Have Been Installed, They Should Be Evacuated