Because the pump is always located at the bottom (often the bottom of a well), it can pump the liquid upwards to any desired height within the limits of the power of the drive and the pressure that the pump and the discharge pipe connected to it can handle.
An important limitation of submersible pumps is the cooling of the motor. The most famous (dry) electric motors are air-cooled by means of a fan. This technique cannot be used with submersible motors. In many cases it will be the pumped liquid that cools the motor. Hence, in most cases the pump should only start when fully submerged and the operation manual specifies the interval operation regime. The submersible pump is mainly used for: groundwater lowering, pumping groundwater for drinking water or extinguishing water, pumping away drainage water, effluent and waste water.
