Air Conditioning Maintenance Process:

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

2. Welding Operations. Prior to welding, release the Freon from the system. Always wear protective eyewear to prevent eye injury. During the Freon release, operators should not face the process opening or discharge towards others to avoid frostbite from the Freon. 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 individually, power operation is prohibited when the high-pressure or low-pressure valves are closed to avoid accidents such as system bursting due to excessive pressure or explosion due to vacuum operation of the compressor. When inspecting the outdoor fan system, power operation is required, and it must be ensured that the air conditioner panel and fan grille are properly installed.