Six Tips To Extend The Life Of Your Submersible Pump

Nov 21, 2022

Small submersible pumps are small and lightweight and play an important role in many ways. In order to avoid accidents during use, prolong the service life and give full play to its excellent performance, the following points should be paid attention to when using:

1. Install a leakage protector

The submersible pump works underwater, and it is easy to leak electricity and cause power loss or even electric shock. If a leakage protector is installed, as long as the leakage power of the submersible pump exceeds a certain value (generally no more than 30 mA), the leakage protector will cut off the power supply of the submersible pump to avoid leakage and waste of electric energy and ensure safety.

2. Proper installation method

When installing the submersible pump, the cable should be overhead, and the power cable should not be too long. Do not apply force to the cable when the submersible pump is launched or lifted, so as not to cause the power cord 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 windings. During installation, the insulation resistance of the motor should not be lower than 0.5 megohms.

3. Avoid booting when the power supply voltage is abnormal

The difference between the power supply voltage and the rated voltage should not be 10%. If the voltage is too high, the motor will overheat and the winding will be burned. If the voltage is too low, the motor speed will drop. It will heat up and even burn out the windings and capacitors after being energized for a long time.

4. Do not switch the motor frequently

This is because the backflow will occur when the electric pump is stopped. If it is turned on immediately, the motor load will start, resulting in excessive starting current and burning out the windings.

5. Do not allow the pump to operate abnormally

Do not allow the pump to run overloaded for a long time, do not pump water with a large amount of sand, and the electric pump should not be dehydrated for too long, so as not to overheat the motor and burn it. During the operation of the unit, the operator must observe whether the working voltage and current are within the values specified on the nameplate at any time. The direction of rotation of the motor should be correct. The rotation direction of the motor should be clarified. Now there are many types of submersible pumps that can discharge water in both forward and reverse rotations, but the water output is small and the current is large during reverse rotation, and the motor winding will be damaged if the reverse rotation time is too long.

6, usually more maintenance

The motor should be checked frequently. If the lower cover is found to be cracked, the rubber sealing ring is damaged or invalid, etc., it should be replaced or repaired in time to prevent water from infiltrating the submersible pump.