Submersible pumps are small and lightweight, and play an important role in rural production and life. The following 5 points should be taken into account when applying them.
When selecting a submersible pump, it should be noted that the type, flow rate, and head size of the selected pump are inappropriate, and they will not be able to obtain sufficient water output and the unit's efficiency will not be used. In addition, the direction of rotation of the motor should also be known. Some types of submersible pumps can produce water when they are rotating forward and backward. However, when the reverse rotation is small and the current is large, reverse rotation can damage the motor windings. In order to prevent leakage when the submersible pump is operating underwater, an electrical leakage protection switch should be installed.
When installing the submersible pump, the cable should be overhead and the power cable should not be too long. When the unit is under water, do not apply force to the cable to avoid the power cable from breaking. Do not sink into the mud while the submersible pump is in operation, otherwise it will cause poor heat dissipation and burn out the motor windings. The motor below 13 kilowatts can be started directly, and the starter compensator above 13 kilowatts should be used.
Try to avoid starting at low voltage. The power supply voltage and rated voltage must not differ by 10%. If the voltage is too high, the motor will overheat and burn out the winding. If the voltage is too low, the motor speed will drop. If the rated speed is less than 70%, start the centrifugal switch. Will close, cause the starting winding to be energized for a long time to generate heat, even burn the winding and the condenser.
Do not allow the pump to run for a long period of time. Do not pump water with high sediment content. The dehydration time of the pump should not be too long to avoid overheating the motor and burning it. During the operation of the unit, the operator must observe at any time whether the working voltage and current are within the values ​​specified on the nameplate. If not, the motor should be stopped to find out the cause and remove the fault.
Usually more inspections, such as the discovery of cracks in the motor cover, rubber seal ring damage or failure, etc., should be promptly replaced or repaired to prevent water penetration into the machine.
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When selecting a submersible pump, it should be noted that the type, flow rate, and head size of the selected pump are inappropriate, and they will not be able to obtain sufficient water output and the unit's efficiency will not be used. In addition, the direction of rotation of the motor should also be known. Some types of submersible pumps can produce water when they are rotating forward and backward. However, when the reverse rotation is small and the current is large, reverse rotation can damage the motor windings. In order to prevent leakage when the submersible pump is operating underwater, an electrical leakage protection switch should be installed.
When installing the submersible pump, the cable should be overhead and the power cable should not be too long. When the unit is under water, do not apply force to the cable to avoid the power cable from breaking. Do not sink into the mud while the submersible pump is in operation, otherwise it will cause poor heat dissipation and burn out the motor windings. The motor below 13 kilowatts can be started directly, and the starter compensator above 13 kilowatts should be used.
Try to avoid starting at low voltage. The power supply voltage and rated voltage must not differ by 10%. If the voltage is too high, the motor will overheat and burn out the winding. If the voltage is too low, the motor speed will drop. If the rated speed is less than 70%, start the centrifugal switch. Will close, cause the starting winding to be energized for a long time to generate heat, even burn the winding and the condenser.
Do not allow the pump to run for a long period of time. Do not pump water with high sediment content. The dehydration time of the pump should not be too long to avoid overheating the motor and burning it. During the operation of the unit, the operator must observe at any time whether the working voltage and current are within the values ​​specified on the nameplate. If not, the motor should be stopped to find out the cause and remove the fault.
Usually more inspections, such as the discovery of cracks in the motor cover, rubber seal ring damage or failure, etc., should be promptly replaced or repaired to prevent water penetration into the machine.
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