The need for system maintenance, leakage, there are no requirements for some convenient way to check the system for leaks. One of the simplest methods of leak detection, which can be used for all refrigerants in all environments testing with soap bubbles. This method uses a relatively viscous soap solution that is used for connecting pipes, fittings, and other suspect connections in the system. After a few minutes, these sites are examined for evidence of the formation of bubbles. If bubbles are present in a soap solution, they indicate the presence of a leak. This is the only method that can be used for carbon dioxide because it does not react in such a way that can otherwise be found. Soap hubbies should also be used for leak detection systems using direct hydrocarbon refrigerants. Other leakage test methods the use of heat or electric current as a tool of measurement. Heat or spark can ignite hydrocarbon refrigerants present in the atmosphere surrounding equipment, refrigerant leakage. To effectively test the system using soap bubbles, its pressure must be not less than 50 pounds per square inch (344.7 kPa).
DRI torch is often used for leak detection systems using any of Halocarbon refrigerants.
In halide torch consists of a copper element, which is heated flame created through die combustion of propane. Air needed to support fuel combustion is absorbed through a rubber tube, which is connected to the base of the torch. Air and fuel balance in the transmission over copper disk. Once ignited, the air fuel mixture is heated to die copper, until it glows. After copper reached its operating temperature, the free end of the tube is passed around all sides of joints, fittings, equipment and other suspected areas. The presence of chladone vapors is indicated when the flame is changed normal color to bright green, blue or purple. Color change caused by a chemical reaction that occurs between die chlorine and fluoride contained in the combustion air and copper molecules on the hot copper disc. Larger leaks, the greater the change in color.
Warning: when burning helocarbon refrigerants produces very toxic gas phosgene. Thus, the tightness of the devices should be used only in well ventilated areas. Halide torches should not be used in the presence of flammable vapors or explosion may occur...