1. Preliminary inspection and dredging: Close the water source to prevent water overflow during maintenance. Use a hand cranked or long rod unclogger to dig deep into the sewer and try to clear blockages. If the blockage is not severe, pour in an appropriate amount of hot water and detergent, let it stand for a moment, and then rinse with water.
2. Use chemical dredging agents: Choose chemical dredging agents suitable for sewer materials. According to the instructions in the manual, pour an appropriate amount of dredging agent into the blocked sewer. Wait for a while for the dredging agent to fully take effect. Rinse the sewer with plenty of clean water until the water flows smoothly.
3. Professional maintenance or disassembly inspection: If the above methods are ineffective, consider contacting a professional pipeline dredging service company. Professional personnel may use high-pressure water guns, professional dredging machines, and other equipment for deep dredging. If necessary, some pipes need to be dismantled to thoroughly remove stubborn blockages or repair internal damage to the pipes. After the repair is completed, ensure that all components are installed correctly and test whether the sewer is completely unobstructed.