Why Do We Need To Add Water When Installing And Using Deep Well Submersible Pumps

Jul 08, 2025

Deep well submersible pumps have been widely used in various industries, but I feel a bit puzzled about the practice of adding water before using newly purchased submersible electric pumps. When we turn on the submersible pump, there is a requirement in the product manual to add water before use.

Many people think that the working environment of the submersible pump is in water, and adding water before use is almost self defeating. As a professional manufacturer of submersible electric pumps, we would like to inform you that the manufacturer has already stated that adding water to the submersible electric pump is necessary for operation. Therefore, we only need to follow the instructions and do not neglect this process, otherwise it may cause damage to the submersible electric pump.

Here, the editor explains why it is necessary to add water to a submersible electric pump before its first use. After being placed in water, a submersible electric pump will generate significant heat during operation.

A motor that rotates at 2900 revolutions per minute generates a significant amount of heat during operation, and the heat generated by the submersible pump is inside the motor. To alleviate this heat, it is necessary to fill the outer chamber of the motor with water and use it to cool the motor, in order to avoid the motor from burning out during operation.

The water we add here is not added internally, but to the inner cavity of the motor, which is also part of the maintenance of the submersible electric pump