What is the vacuum pressure for car air conditioning evacuation?
1 Answers
The optimal evacuation value is 98.7-99.9kpa. When the system pressure approaches vacuum, close the high and low pressure manual valves and maintain pressure for 5~10 minutes. If the low-pressure gauge needle does not move, open the high and low pressure manual valves to start the vacuum pump and continue evacuation. The evacuation time should not be less than 30 minutes. More details about car air conditioning vacuum pressure are as follows: 1. Introduction 1: During evacuation, as the pressure decreases, water gradually vaporizes into steam and is removed. This process is relatively slow, so evacuation generally requires more than 30 minutes. 2. Introduction 2: Car air conditioning evacuation usually involves the use of a vacuum pump and a car air conditioning manifold gauge. The purpose of evacuating the car air conditioning system is to remove air and moisture from the refrigeration system, which is an extremely important procedure in air conditioning maintenance. 3. Introduction 3: When performing maintenance or replacing components in the refrigeration system, air can enter the system, and the air contains a certain amount of water vapor. Evacuation does not directly remove moisture from the refrigeration system but creates a vacuum that lowers the boiling point of water, allowing the moisture to vaporize into steam and be removed from the refrigeration system.
