Air Conditioning Maintenance Process:

1. Comprehensive Inspection. When various air conditioners encounter malfunctions, a thorough inspection is required. Initially, check the machine's pressure and the operating temperatures at various system points; for split units, this must be done with the indoor and outdoor units connected. Connect a pressure gauge to detect the compressor exhaust pressure, ensuring it is done when the machine is stationary to prevent burns from high temperatures during operation. Feel the temperature of the compressor exhaust port to the condenser section of the pipeline with your hand. First, use your fingers to quickly test some temperatures to avoid injury.

2. Welding Operations. Prior to welding, release the refrigerant from the system. Always wear protective eyewear during welding to prevent eye injury. Avoid facing the process opening or releasing gas towards others while releasing refrigerant to prevent frostbite. Adhere to welding operation requirements to prevent poor installation or injury to others.

3. Power Operation. When repairing the outdoor unit of a split system separately, power operation is not allowed when the high-pressure valve or low-pressure valve is closed to prevent overpressure and system burst accidents, or compressor vacuum operation leading to explosion accidents. When inspecting the outdoor fan system, power operation is required, and it must be ensured that the air conditioning panel and fan grill are properly installed.