7 Ways To Test Refrigerant Leaks

By Author: Guchen Industry
Total Articles: 7
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In summer, use of air conditioning refrigerant leakage is the most common fault. Some need to add refrigerant once a year, and some may be added once two months. Refrigerant leak likely to cause environmental pollution, the owner an additional cost and time of maintenance of the vehicle. The following are the seven kinds of automotive air conditioning leak detection methods.

By watching
Somewhere in the system have found traces of oil may leak point here. Visual leak detection is simple, there is no cost, but there is a great defect, large leak unless the system is suddenly broken, and the system is leaking liquid colored media, otherwise the visual leak detection can not locate, because the place is usually very subtle leakage, and there are many parts of automotive air conditioning itself almost invisible.

By soapy water
The system filled 10-20kg / cM2 pressure nitrogen, and then coated with soapy water in various parts of the system, is bubbling at the leakage point. This approach is currently the most common roadside repair shop leak detection methods, but who's arm is limited, human vision is limited ...
... in scope, often can not see the leak.

By Nitrogen gas water
The system filled 10-20kg / cm2 pressure nitrogen, the system immersed in water, bubbling at the leakage point is. This method and substance of soapy water leak detection methods, like the front, though low cost, but there are obvious shortcomings.
 Water leak detection with easy access to the system, leading to corrosion of the material within the system, while the high-pressure gas is also likely to cause greater damage to the system, carried out when the leak is also a great labor intensity, thus making maintenance and overhaul costs rise.

By halogen lamp
Leak lit lamps, halogen lamps on a handheld air tube when the tube near the mouth system leaks, the flame color turns purple and blue, which indicates that where there is a lot of leaks. In this way there is an open flame to produce not only very dangerous, but flames and refrigerant combination will produce harmful gases, in addition, is not easy to accurately locate the leak. So this approach is now almost no one uses, and if you can see, it is probably now in the stage of non-civilized society.

By differential pressure of the gas
The difference between inside and outside air pressure system using the differential pressure through the sensor amplification, by way of a digital or sound or electronic signals expression leak results. This method is only "qualitative" to know whether the system can accurately find leaks and leak points.

By Electric
Against possible leakage is moved with the probe when the leak alarm device, which indicate where a large leak. Electronic leak detection products easy to damage, maintenance of complex and vulnerable to environmental chemicals such as gasoline, the impact of exhaust gases, can not accurately locate the leak.

By fluorescent light
It is the use of fluorescent dyes in the UV / blue light exposure would leak glows bright yellow green principles, various types of systems for detecting fluid leakage. When in use, only a certain proportion of the fluorescent agent added to the system, the system works 20 minutes after wear special glasses, using an external leak detection lamp illumination system, leaks will show a yellow fluorescence.
Advantages fluorescent leak detection is accurate positioning, leakage points can be directly seen with the eyes, but easy to use, easy to carry, lower maintenance costs, represents the development direction of the car leak detection. It is understood, TP fluorescent leak detection technology in foreign countries have 50 years of history, has been recognized and applied, including General Motors, Volkswagen, Mitsubishi, including the world's major automobile manufacturers.

As China's first bus air conditioner manufacturer and supplier, Guchen Industry have been dedicated in this industry for more than 10 years. All our items include: electric bus air conditioner, best bus HVAC system, and transport refrigeration units. We provide best HVAC solutions for your truck, van and bus.