what is A/C evacuation?

Question

On most cars

Answer 1

The AC tech uses a Vacuum pump to draw out any or all gasses in the Air-conditioner cooling system. The pump will remove air that may contain moisture.
Evacuating the system allows the fresh charge of refrigerant to completely fill the system to maximum volume.
The maximum amount of refrigerant with the smallest amount or air in the system .

Yours: Grumpy


Around of applause please for : "Vinny b." (Down a couple spots) A very nice, Accurate and Concise answer.
Nice job: Grumpy

Answer 2

Evacuating the A/C system on a car, or any system for that matter, is the complete removal of all of the refrigerant. After the refrigerant is removed, the system is attached to a vacuum pump for an extended period of time, usually over a half-hour or longer which does two things; 1. It removes any residual refrigerant. 2. It also helps remove any moisture in the system since water boils at a very low boiling point when put under a complete vacuum, around 55-65 degrees F. Moisture and refrigerant mixed together make Hydrochloric acid which attacks and damages aluminum. Putting the system under a vacuum is a quick, although not necessarily, accurate way to test for system leaks because if there are leaks, the system usually won't hold a vacuum. After the system is evacuated it is refilled with the proper amount of refrigerant. This is determined on a car usually by a label attached near the radiator and is usually expressed in ounces and the type of refrigerant (R134A or R-12). One can of refrigerant is not a pound, one can usually contains 12 ounces of refrigerant, so you have to determine the correct amount of refrigerant to put back into the system so as to not over fill or under fill the system.

Answer 3

A/C is the air conditioner. I'm assuming that the "evacuation" is the purge valve for the freon. It is illegal to release freon into the environment, so I would not mess with it, unless you are certified to service a vehicle's A/C system.

Answer 4

it's when you evacuate all the air/freon out of an ac system so that when you put freon in, you have pure freon and not a combination of air and freon. when the system develops a leak, all the freon eventually leaks out to the atmosphere, as temperture rises and falls the system expands and contracts allowing are to enter through the leak. for the system to work at peak efficientcy, after fixing the leak ,you must remove all the air and put pure freon back into the system.

Answer 5

On all cars evacuation is the removal of the freon charge.I assume your asking this because of a charge on a bill.

Answer 6

sucking all the freon out

Answer 7

i suppose it is the process of removing the refrigerant