For the durable and reliable operation of the pump, you need to choose the right depth of its immersion. It is desirable that the pump is immersed in water by 1-1.5 meters. However, the water level fluctuates, especially in the arid years. In such years, control over the level of water is important, if necessary, you will have to add a pipe and cable, and it is better to immediately put them in.
