What Causes Refrigerant Leakage at the Automotive Air Conditioning Expansion Valve?
1 Answers
Here are the specific reasons for refrigerant leakage at the automotive air conditioning expansion valve: 1. Pipeline failure: During the installation of the air conditioning indoor-outdoor unit connecting pipes, if the bending angle of the pipeline is too small, it may cause pipe cracking leading to refrigerant leakage or complete loss of refrigerant. When laying the connecting pipes between the indoor and outdoor units, appropriately increase the bending radius of the pipeline to prevent excessive bending. Any leaking pipes should be promptly repaired by welding or replaced. 2. Leak points in the refrigeration system: When replacing components of the refrigeration system, improper secondary installation of parts may create refrigerant leak points in the pipelines and refrigeration system. Apply a moderately concentrated soapy water solution to the entire refrigeration system pipelines and welded joints for leak detection. The testing conditions require the refrigeration system to be charged with nitrogen or refrigerant. Pay close attention to oil-stained areas on the pipelines, systematically identify all leak points, and perform component repairs or replacements based on the actual situation.