What causes the refrigerant leakage in the Mercedes-Benz R350 air conditioning system?

[SanClayton]

Refrigerant leakage occurs due to the vapor-compression refrigeration cycle, where the refrigerant in the system's pipelines is under certain pressure. Common locations of refrigerant leakage: Refrigerants commonly used in vapor-compression refrigeration include R12 and R134a. Due to the vapor-compression refrigeration cycle, the refrigerant in the sealed pipelines is under pressure, which can lead to leaks. Common leakage points include the condenser, evaporator, charging port seal core, pipeline connection seals, or the air conditioning pump itself. The most direct method to locate leaks: Disassemble the entire air conditioning system, connect it below, pressurize it, and submerge it in water to observe where bubbles emerge. Another method is using fluorescent dye for leak detection: add specialized fluorescent dye to the refrigerant oil, operate the system for a few days, and then use specialized glasses to observe where the fluorescent dye leaks, indicating the leak point. Air conditioning leaks are complex faults, and the disassembly process is intricate, requiring patience.