Refrigerator vehicle air-conditioning refrigerant leak detection

Refrigerators Some vehicles may need to be added for one year, but some vehicles may need to be added once in two months. If there is a leak in the refrigerant of the refrigerated truck, it will cause environmental pollution. In addition, the driver needs to increase the time and cost of maintaining the vehicle. The leakage of the brakes is also a common failure in the use of vehicle air conditioners. How to detect it?

1. If an oil trace is found in a certain place in the system, then you can identify that point as a leak. Although it is more convenient and not costly to use visual inspection for leakage, the defect is more bold, unless there is a sudden leakage of large leakage in the system, and the leaked liquid has colored media. Otherwise, the use of visual inspection leaks can not be positioned as a fundamental, in the detection of leaks need to pay close attention to the location, and there are many parts of the refrigerated truck air conditioning is simply no way to see.

2. Inject 20-10 kgcm2 of nitrogen into the system, then apply soapy water to the top of the system and place a bubbling spot to locate the leak. This method of detection is also the most common way to detect leaks at repair shops on the road. However, because the range of human eyes and the length of arms are limited, the shortcomings will also cause more. The leakage point cannot be observed and detected.

3. Inject 20-10 kgcm2 of pressure nitrogen into the system. In the system, pour into the water, where the bubbling occurs is the leakage point. in fact. This method is consistent with the detection method of soapy water, although it is a low-cost detection method, but the shortcomings are also more obvious. Water used during leak detection can easily enter the system. This can cause some materials in the system to be corroded, and high-pressure gases can also cause greater damage on the system. The labor intensity will also increase, and counterproductive will lead to increased maintenance costs.

4, ignition detection leakage, etc., holding the air tube above the halogen lamp, wait until the nozzle close to a leak in the system when the flame's color will turn purple blue, then prove this place has There has been a lot of leakage. Because this type of detection is caused by an open flame, it is also dangerous, and the combination of refrigerants and open flames will produce gases that are harmful to the human body. This method of detection is also extremely inconvenient. So, very few people now use this type of refrigeration vehicle refrigerant leak detection.