Here are some points of attention to the use of submersible pump:
1. Confirm the correct motor direction of rotation should clarify the motor rotation direction, there are now many types of submersible pump when the forward and inversion can be water, but the reverse when the water is small, current, its reversal time long will damage the motor windings.
2. The prohibition of abnormal power supply voltage power supply line is relatively long, the end of the line is often too low voltage. When the phase voltage below 198 volts, line voltage lower than 342 volts, submersible pump motor speed to drop, when up to 70% less than the rated speed, start centrifugal switch closed, resulting in start winding head of time electricity and heat and even burn winding and capacitor. On the contrary, caused by high voltage motor overheating and burn winding. Therefore, the submersible pump in the operation, the operator must observe the power supply voltage, if less than 10% of the rated voltage, higher than the rated voltage of 10% or more, should be to stop the operation of the motor, to find out the reasons and troubleshooting.
3. Cable installation and the submersible pump insulation resistance requires the installation of submersible pumps cables to overhead power lines not too long.
Self priming pump water or put forward not to make the cable force, so as not to cause power line fault. When the submersible pump works do not sink into the mud, otherwise it will lead to poor motor cooling motor windings burned. When installation, the insulation resistance of the motor should not be lower than that of the.
4. The installation of leakage protection device is also called the protection of the life of the device, it's role from the "life" of the three words can be understood. Because submersible pump works under water, easy to leakage caused by power loss or even lead to electric shock accident. If equipped with leakage protector, as long as the submersible pump leakage values over the action current of leakage protector value (generally not more than 30 MA), earth leakage protection device will cut off the submersible pump power, to ensure the safety while avoiding leakage and waste of energy.
5. To avoid frequent switching do not frequently switch submersible pump, 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. As the start when the current large, frequent start will burn submersible pump motor windings.
6. Do not let the submersible electric pump long-term overload of work to avoid submersible pump long-term overload of work, do not draw large sediment water and always observe the current whether in the nameplate on the provisions of the numerical value, if too much current is found should be down to check. In addition, the electric pump running time should not be too long, so as not to make motor overheating and burning.
7. Pay attention to daily maintenance usually should always check the motor, such as the found under the cover cracked, rubber seal ring damage or failure, etc., should be promptly replaced or repaired, to avoid water infiltration submersible pump. The use of submersible pump and focus on some of the daily protection can better extend the life of the submersible pump.
