What is the normal high and low pressure of automobile air conditioning?

The high pressure shall be1.3-1.7 MPa; The low pressure should be between 0.1-0.25mpa. ..

When testing the high and low pressure of automobile air conditioner, when the engine increases the throttle, the low pressure should decrease with the engine speed. The faster the engine speed, the more (faster) the pressure drops.

It shows that the performance of the compressor is good, if not, it shows that the compressor is faulty. If R22 is used as the refrigerant of the water chiller, the high pressure during operation is 1.8MPa, and the corresponding condensation temperature is about 50 degrees.

Pay attention to the use of air conditioning system.

1. The vehicle air conditioning system is basically shut down in winter. Before starting for the first time, check the belt tightness, and let the engine idle for a period of time to observe whether it starts normally and check the cooling effect during operation. If it is not started or the cooling effect is not ideal, it should be checked at the service station.

2. The air-conditioning system is easy to inhale dust and bacteria during use. After long-term use, the air-conditioning system should be dusted and disinfected to ensure the health of the people in the car.