Miniature submersible pump is characterized by small and lightweight, is a good helper for farmland watering and farm life water. In order to ensure the normal life of miniature submersible pump to maintain stable performance and avoid accidents during use, resulting in loss, the use should pay attention to the following eight points:

1, to avoid frequent switching:

Do not switch the micro-submersible pump frequently, this is because the pump will stop when the flow back, if immediately start, the motor load will start, leading to the start-up current is too large and burn the winding. As the start-up current, frequent start-up will also burn the submersible pump motor windings.

2, install leakage protector:

Leakage protection, also known as lifeguard, its role from the "lifebinder" these three words can be understood. As the submersible pumps work under water, easy electric leakage causes the loss of electric energy and even causes electric shock accident. If equipped with leakage protector, as long as the submersible pump leakage current value exceeds the operating current leakage protector (usually not more than 30 mA), the leakage protector will cut off the power of the submersible pump to avoid leakage of electric energy waste, to ensure safety.

3, the power supply voltage abnormal Mo boot:

Rural areas due to the low voltage power supply line is longer, the end of the line voltage is too low. When the phase voltage is lower than 198V and the line voltage is lower than 342V, the submersible pump motor speed drops. When it reaches 70% of the rated speed, the starting centrifugal switch will be closed, causing the starting winding to energize for a long time and even burn out Windings and capacitors. In contrast, overvoltages cause the motor to overheat and burn the windings. Therefore, the submersible pump operation, the operator must always observe the power supply voltage value, if less than 10% of the rated voltage below 10% above the rated voltage, the motor should be stopped to find out the cause and troubleshooting, should not dive Long-term overload pump work, in order to avoid long-term overload of submersible pump work, do not pumping large amounts of water and keep the current value is observed on the nameplate if the value is found, if the current is too large, should stop checking. In addition, the pump running time dehydration should not be too long, so as not to overheat the motor and burned.

4, the power should be selected according to regulations:

If the use of power and water pump far apart, the cross-sectional area of the wiring cable should be appropriately increased, the joint should be minimal to ensure that the normal use of the voltage between 342-418 v. To ensure safety, a 1 m or more iron bar can be buried as a ground wire in wet places near the power supply or water pump.

5, cable installation and submersible pump electric resistance requirements:

When installing a mini submersible pump, the cables should be squeezed out and the power cord should not be too long. Submersible pump into the water or made when not to force the cable, so as not to cause the power cord rupture. Do not sink into the mud during submersible pump work, otherwise it will lead to poor motor cooling and burn motor windings. During installation, the motor's insulation resistance should not be less than 0.5 megohms.

6, let submersible pump long-term overload work

To avoid long-term overload of submersible pump work, do not pumping large amounts of water and observe the current value is on the nameplate if the value specified, if the current is too large, should be shut down for inspection. In addition, the pump running time dehydration should not be too long, so as not to overheat the motor and burned.

7, Qinqin see found timely repair problems

Normally, always check the motor. If there is a crack in the lower cover or damage or failure of the rubber seal ring, it should be promptly replaced or repaired to prevent water from entering the submersible pump.

8, the direction of rotation of the motor to be correct:

Should find out the direction of rotation of the motor, there are many types of submersible pumps forward and reverse when the water can be, but reverse the small amount of water, the current is large, the reversal of a long time will damage the motor windings