Air Conditioning Maintenance Process:

1. Comprehensive Inspection. When various air conditioners encounter malfunctions, a thorough inspection is required, starting with checking the machine's pressure and the operating temperatures at various points in the system; for split-type units, this must be done with the indoor and outdoor units connected; connect a pressure gauge to detect the exhaust pressure of the compressor. Please connect the pressure gauge when the machine is stationary to avoid high-temperature burns during operation; use your hands to feel the temperature of the compressor exhaust port to the condenser section pipeline. First, use your fingers to quickly test some temperatures to prevent injury.

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

3. Power Operation. When repairing the outdoor unit of a split system separately, do not operate with power on when the high-pressure or low-pressure valves are closed to prevent overpressure causing system burst accidents or the compressor running at vacuum leading to explosion accidents; 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.