How to improve the life of the stainless steel pump

How to extend the service life of stainless steel submersible pump it?

First, confirm the correct direction of motor rotation

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

Second, prohibit the power supply voltage abnormal boot

As the low-voltage power supply line is relatively long, the end of the line voltage is too low is common. When the phase voltage is below 198 volts, the line voltage is lower than 342 volts, submersible pump motor speed down, when less than 70% of the rated speed, start the centrifugal switch will be closed, resulting in long start-up winding power and even burn Windings and capacitors. Conversely, a high voltage causes the motor to overheat and burn out the winding. Therefore, the submersible pump in operation, the operator must always observe the power supply voltage value, if less than 10% of the rated voltage, higher than 10% of rated voltage above, the motor should stop running, find out the cause and troubleshooting.

Third, the cable installation and submersible pump insulation resistance requirements

Install the submersible pump, the cable to overhead, the power cord should not be too long. Submersible pump into the water or put forward not to force the cable to avoid breaking the power cord. Do not sink submerged pump in the mud, otherwise it will lead to bad motor cooling and burn motor winding. Installation, the motor insulation resistance should not be less than 0.5 megohm.

Fourth, the installation of leakage protection

Leakage protection device, also known as protectors, its role from the “security device” the three words can be understood. Because the submersible pump in the water, easy to leakage caused by power loss or even lead to electric shock accident. If the leakage protector is installed, the leakage protector will cut off the power of the submersible pump to ensure the safety and avoid the leakage and waste of the electric energy as long as the leakage value of the submersible pump exceeds the operating current value of the leakage protector (generally not more than 30mA).

5, to avoid frequent switching

Do not frequently switch the submersible pump, this is because the pump will stop when the return flow, if immediately start, the motor load will start, resulting in too large starting current and burn the winding. Due to the large current at start-up, the frequent start-up also burns the submersible pump motor windings.

6, let the submersible pump long-term overload

In order to avoid long-term overload of submersible pump work, do not smoke a large amount of water and observe the current value is on the nameplate value, if the current is too large, should stop checking. In addition, the dehydration pump running time should not be too long, so as not to make the motor overheating and burned.

7, pay attention to routine maintenance

Usually should always check the motor, if found under the cover of a crack, rubber seal ring damage or failure, should be replaced or repaired in time to avoid water infiltration submersible pump.