潜水泵工作是，整个泵体和电机都在液体中，下面介绍的几点可以延长潜水泵的使用寿命的方法：
　　1、确认正确的电机的旋转方向
　　应搞清电机的旋转方向，现在有许多类型的潜水泵正转和反转时皆可出水，但反转时出水量小、电流大，其反转时间长了会损坏电机绕组。
　　2、禁止电源电压异常开机
　　由于低压供电线路比较长，线路的末端电压过低是常有的事。当相电压低于198伏，线电压低于342伏时，潜水泵电机转速下降，当达不到额定转速的70%时，启动离心开关会闭合，造成启动绕组长时间通电而发热甚至烧坏绕组和电容器。相反，电压过高引起电机过热而烧坏绕组。因此，潜水泵在作业中，操作者必须随时观察电源电压值，若低于额定电压10%以下，高于额定电压10%以上，应使电机停止运转，找出原因并排除故障。
　　　　3、电缆线安装与潜水泵的绝缘电阻要求
　　安装潜水泵时，电缆线要架空，电源线不要太长。潜水泵下水或提出时切勿使电缆受力，以免引起电源线断裂。潜水泵工作时不要沉入泥中，否则会导致电机散热不良而烧坏电机绕组。安装时，电机的绝缘电阻不应低于0.5兆欧。
　　4、漏电保护器的安装　
　　漏电保护器也叫保命器，它的作用从“保命器”这三个字就可以理解。因为潜水泵在水下工作，容易漏电造成电能损失甚至引发触电事故。如果装有漏电保护器，只要潜水泵漏电值超过漏电保护器的动作电流值(一般不超过30毫安)，漏电保护器就会切断潜水泵的电源，确保安全，同时避免漏电、浪费电能。
　　5、避免频繁开关　
　　不要频繁地开关潜水泵，这是因为电泵停转时会产生回流，若立即开机，会使电机负载启动，导致启动电流过大而烧坏绕组。由于启动时电流很大，频繁启动也会烧坏潜水泵电动机绕组。　
　　6、不要让潜水泵长期超负荷工作
　　为避免潜水电泵长期超负荷工作，不要抽含沙量大的水并随时观察电流值是否在铭牌上规定的数值，若发现电流过大，应停机检查。另外，电泵脱水运行的时间不宜过长，以免使电机过热而烧毁。　
　　7、注重日常维护
　　平时要经常检查电机，如发现下盖有裂纹、橡胶密封环损坏或失效等，应及时更换或修复，避免水渗入潜水泵。
　　注意潜水泵保护器的运用和注重一些日常的保护，能更好的延长潜水泵的使用寿命。

Submersible pump work is, the whole pump body and the motor are in the liquid, the following points can prolong the service life of the submersible pump method :  

    1. Confirm the correct rotation direction of the motor. 

It is necessary to find out the rotation direction of the motor. At present, many types of submersible pumps can be out of water when they are rotating and reversing. However, when they are reversing, the amount of water is small and the current is large. The long reversal time will damage the motor winding. 

    2.prohibit abnormal power supply voltage boot 

Because the low-voltage power supply line is relatively long, it is common for the terminal voltage of the line to be too low. When the phase voltage is lower than 198 volts and the line voltage is lower than 342 volts, the speed of the submersible pump motor decreases. When the rated speed is less than 70 %, the starting centrifugal switch will be closed, causing the starting winding to be energized for a long time and heat or even burn the winding and capacitor. On the contrary, the high voltage causes the motor to overheat and burn out the winding. Therefore, in the operation of the submersible pump, the operator must observe the power supply voltage value at any time. If it is below 10 % of the rated voltage and above 10 % of the rated voltage, the motor should be stopped, the cause should be found out and the fault should be eliminated.

    3 .Cable installation and submersible pump insulation resistance requirements 

When installing the submersible pump, the cable should be overhead and the power line should not be too long. Do not force the cable when the submersible pump is launched or raised, so as not to cause the power line to break. Do not sink into the mud when the submersible pump is working, otherwise it will cause poor heat dissipation of the motor and burn the motor winding. During installation, the insulation resistance of the motor should not be less than 0.5 megohm. 

    4. Installation of leakage protector 

Leakage protector, also known as lifeguard, its role can be understood from the three words ' lifeguard '. Because the submersible pump works underwater, it is easy to cause power loss and even cause electric shock accidents. If there is a leakage protector, as long as the leakage value of the submersible pump exceeds the action current value of the leakage protector ( generally not more than 30 mA ), the leakage protector will cut off the power supply of the submersible pump, ensure safety, and avoid leakage and waste of electric energy. 

    5. Avoid frequent switching 

Do not switch the submersible pump frequently. This is because the electric pump will produce backflow when it is stopped. If it is started immediately, the motor load will start, resulting in excessive starting current and burning of the winding. Due to the large current during start-up, frequent start-up will also burn the submersible pump motor winding.

    6, do not let the submersible pump long-term overload work 

In order to avoid the long-term overload of the submersible electric pump, do not pump water with high sediment content and observe whether the current value is specified on the nameplate at any time. If the current is too large, it should be stopped for inspection. In addition, the dehydration operation time of the electric pump should not be too long, so as not to overheat the motor and burn it. 

    7, pay attention to daily maintenance 

Usually, the motor should be checked frequently. If cracks in the lower cover, damage or failure of the rubber sealing ring are found, it should be replaced or repaired in time to avoid water infiltration into the submersible pump. 

Pay attention to the use of submersible pump protector and pay attention to some daily protection, can better prolong the service life of submersible pump.