Submersible pump is mainly composed of control field, cable, lifting pipe, electric pump and motor. It is very important in the fields of mine emergency rescue, construction project drainage, agricultural water drainage and irrigation, industrial water cycle, urban and rural residents' use of water supply, and even disaster relief. At present, with the rapid development of science and technology, great attention has been paid to the development of submersible pumps. Only through long-term continuous exploration can the advantages of submersible pumps be further maintained. The way to maintain their competitiveness can be through studying the functional characteristics and functions of submersible pumps.

Submersible pump means that the entire pump body and motor are in liquid. Here are some ways to extend the service life of submersible pumps:
1. Prevent the motor from reversing.
Submersible motors generally have special requirements for motors. Generally, there are concentrated types such as dry, semi-arid, wet, and rechargeable motors. During the debugging process, it is necessary to master the rotation direction of the motor. Many types of submersible pumps can obtain water in the forward and reverse directions. , but if the reversal water is small, the current is large, and the reversal time is long, the motor windings will be damaged.
2. Cable installation and insulation resistance requirements of submersible pumps
When installing the submersible pump, the cable must be overhead, and the power cable should not be too long. Do not apply force to the cable to prevent the submersible pump from entering water or breaking the power cord when it is lifted. Do not sink in the mud when the submersible pump is running, otherwise the motor will not dissipate heat well.
3. Install the leakage protector
The leakage protector is also called a life saver, and its function can be understood by the three words "life saver". Submersible pumps operate in water, so leakage of electricity may result in power loss or electric shock. If a protection program is installed, as long as the leakage current value of the Submersible pump exceeds the operating current value of the protection program (usually below 30 mA), the protection program will cut off the power supply of the submersible pump to ensure safety and prevent leakage and waste of electricity.
4. Avoid frequent switching
Do not switch submersible pumps too often. Because backflow occurs when the electric pump is stopped. Because if the power is applied immediately, the motor load starts, the starting current is too large, and the winding burns. Due to the large current, frequent opening can also burn the motor windings of the submersible pump.
5. Do not allow the submersible pump to overload for a long time
In order to avoid long-term overload of the submersible pump, do not pump water with a large sand content, and always observe whether the current is the value specified on the nameplate. If the current is found to be too large, stop the inspection. In addition, the electric pump should be dehydrated, the running time should not be too long, and the motor should not be overheated, so it should not burn.
6. Pay attention to daily maintenance
The motor should be checked frequently. If there are cracks below, the rubber sealing ring is damaged or failed, it should be replaced or repaired in time to prevent water from infiltrating the Submersible pump. Pay attention to the use and daily protection of the submersible pump protector, which can better extend the life of the submersible pump.