1. To buy
submersible pump should pay attention to its model, flow and head. If the selection is not appropriate, will not be able to get enough water, can not play the efficiency of the unit. In addition, we should make clear the direction of rotation of the motor, some types of submersible pumps are turning and reversing all available water, but the reverse is a small amount of water, a large current, and its anti transfer damaged motor windings. In order to prevent the leakage of the
submersible pump when working under the water and cause an electric shock accident, the electric leakage protection switch should be installed.
2. When the installation of
submersible pumps, cables to overhead power line, not too long. When launching the unit must not make the cable force, so as not to cause the power cable fault. Submersible pumps do not sink into the mud, otherwise it will lead to poor heat burnt motor windings.
3. As far as possible to avoid starting at low voltage. Power supply voltage and rated voltage can not be a difference of 10%, the voltage is too high will cause motor overheating and burning the winding, the voltage is too low, the motor speed down, such as up to less than 70% of the rated speed, start centrifugal switch closed, resulting in start winding head of time electricity and heat and even burn a long winding and capacitor. Do not frequently switch motor, this is because the pump switch to stop the return will produce, if an immediate start, will start the motor load, leading to the starting current is too large to burn winding.
4. Do not let the pump long-term overload operation, do not draw large sediment water, dewatering pump run time should not be too long, so as not to make motor overheating and burning. Units in operation, the operator must always observe the operating voltage and current is in the nameplate on the provisions of the value, if not in accordance with the motor to stop running, find out the reasons and troubleshooting.
5 usually check the motor, such as the discovery of cracks under the cover, rubber seal ring damage or failure, etc., should be promptly replaced or repaired in order to penetrate the machine.
