teelntri

The small submersible pump is small and light, and it is inseparable from farmland irrigation and farm household water. In order to avoid accidents during use, prolong the service life, and give full play to its excellent performance, the following seven points should be paid attention to when using: Seven elements for the use of small submersible pumps:

1. Install the leakage protector The leakage protector is also called the life saver, and its function can be understood from the three words "life saver". Because the submersible pump works underwater, it is easy to leak electricity, resulting in power loss and even electric shock accidents. If a leakage protector is installed, as long as the leakage value of the submersible pump exceeds the operating current value of the leakage protector (generally not 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. Do not start the machine when the power supply voltage is abnormal. In rural areas, due to the relatively long low-voltage power supply lines, it is common for the voltage at the end of the line to be too low. When the phase voltage is lower than 198 volts and the line voltage is lower than 342 volts, the motor speed of the submersible pump will drop. When it does not reach 70% of the rated speed, the Custom Pumps start centrifugal switch will be closed, causing the start winding to be energized for a long time and heat up or even bu out. windings and capacitors. On the contrary, the high voltage causes the motor to overheat and bu out the windings. Therefore, during the operation of the submersible pump, the operator must observe the power supply voltage value at any time. If it is less than 10% of the rated voltage and more than 10% of the rated voltage, the motor should be stopped to find out the cause and eliminate the fault.

3. Avoid frequent switching Do not frequently switch the submersible pump, this is because the backflow will occur when the electric pump is stopped. If it is tued on immediately, the motor load will start, resulting in excessive starting current and buing out the windings. Due to the large current at startup, frequent startup will also bu out the submersible pump motor windings.

4. Do not allow the submersible pump to overload for a long time. In order to avoid the long-term overload of the submersible pump, do not pump water with a large amount of sand and observe whether the current value is in the value specified on the nameplate at any time. If the current is found to be too large, it should be stopped. examine. In addition, the dehydration time of the electric pump should not be too long, so as not to overheat the motor and bu it.

5. The rotation direction of the motor should be correct. The rotation direction of the motor should be found out. 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 the reverse rotation. Will damage the motor windings. Submersible sewage pump

6. Cable installation and insulation resistance requirements of the submersible pump 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 bu the motor windings. During installation, the insulation resistance of the motor should not be lower than 0.5 megohms. 7. Check frequently to find problems and repair them in time. Usually, the motor should be checked frequently. If there are cracks in the lower cover, damage or failure of the rubber sealing ring, etc., it should be replaced or repaired in time to prevent water from infiltrating the submersible pump.