Cleaning method of oil-water separator: 1. The oil-water separator can be directly installed on the channel where oily sewage flows, the sewage outlet can be aligned with the grid inlet of the oil-water separator, and can be connected with other equipment through pipelines; The sewage pipeline at the bottom can be communicated with the sludge dewatering device, or directly connected to the sewage pipeline if there is no sludge dewatering device; 2. When installing the oil-water separator, its horizontal position must be adjusted correctly. Before the first use, the device should be filled with tap water, and then the position of the adjusting plate on the device should be adjusted until the oil outlet only produces oil without water. After the adjustment plate is adjusted, please don't touch it at will, otherwise it will affect the effluent quality; 3. Pay attention to pour out the sundries on the inlet filter and clean them up. (The catering industry should wash the oil stains on the filter screen with hot water to avoid blocking the filter screen and affecting the water inflow. If you use a water pump to lift water, please clean the dirt near the bottom valve of the water pump regularly to avoid blocking the pump valve and affecting the water intake); 4. Pay attention to when cleaning the waste oil in the oil collecting tank: first open the drain valve at the lower part of the oil tank to drain some water, and then collect the waste oil.