How Long Does It Take to Evacuate a Car's Vacuum?

[LaVanessa]

Evacuating a car's vacuum typically takes more than 30 minutes. Evacuation refers to the process of removing air from the car's air conditioning pipelines, while also drying out any water vapor present in the pipelines. Since the refrigerant in the air conditioning system is highly sensitive to moisture, the presence of air and water in the pipelines can lead to insufficient cooling or no cooling at all, affecting the comfort of passengers during summer. Therefore, to ensure the system operates correctly, evacuation must be performed before refilling the refrigerant. Here is some related information: Purpose of evacuation: The evacuation of a car's air conditioning system aims to remove air and moisture from the refrigeration system, which is a crucial step in air conditioning maintenance. During repairs or component replacements, air can enter the system, carrying a certain amount of water vapor. Evacuation does not directly remove water from the refrigeration system but instead creates a vacuum that lowers the boiling point of water, allowing it to vaporize and be extracted as steam. Method for evacuating a car's air conditioning system: Connect the refrigeration system, manifold gauge, and vacuum pump. Set the compressor's high and low service valves to a slightly open position, and ensure the high and low-pressure manual valves on the manifold gauge are closed. Remove the protective covers from the vacuum pump's suction and exhaust ports, then connect the manifold gauge's center hose to the vacuum pump's inlet and outlet.