What is the standard pressure of automotive air conditioning refrigerant?
1 Answers
The standard pressure of automotive air conditioning refrigerant is approximately 1.3 to 1.7 MPa for the high-pressure side and 0.15 to 0.25 MPa for the low-pressure side. If the ambient temperature around the vehicle is high, the high-pressure side may reach around 2.5 to 2.8 MPa, but it generally does not exceed 3.1 MPa, otherwise, the pressure protection switch will be triggered. To ensure the safe operation of the air conditioning compressor, most vehicle air conditioning systems are equipped with a pressure protection switch. When the air conditioning system pressure is too high or too low, the pressure switch will be triggered and stop the operation of the air conditioning compressor. The solutions for excessively high pressure in automotive air conditioning refrigerant are: clean the dust and dirt from the air vents and the cabin; regularly check if the refrigerant level in the air conditioning system is normal; inspect the condition of the compressor belt; and check if the amount of refrigerant is sufficient. The solutions for excessively low pressure in automotive air conditioning refrigerant are: refill the air conditioning refrigerant according to the manufacturer's standards; inspect and repair any leaks in the air conditioning system, and replace any leaking components.
