The safety of small submersible pump is used

Small submersible pump, small and light, peasant life in farmland irrigation and water play an important role in such aspects. To avoid accidents in use process, prolong service life, its good performance, when using, should pay attention to the following points:

To install the leakage protector. Submersible pump work underwater, easy leakage power loss or even cause accident getting an electric shock. If equipped with leakage protector, as long as the submersible pump leakage power exceeds a certain value (generally no more than 30 ma), the power of the leakage protector will cut off the submersible pump, avoid the waste electricity leakage, to ensure safety.

To aerial installation of submersible pump, cable, power cord don't be too long. Submersible pump in the water or put forward do not make the cable force, lest cause the power cord rupture. Don't sink into the mud, the submersible pump work, otherwise it may lead to motor burn out because of his poor cooling motor winding. When installation, electrical insulation resistance should not be less than 0.5 ohms.

Try to avoid boot when the supply voltage abnormal. Power supply voltage and rated voltage is within 10%, the voltage is too high will cause motor overheating and burning of winding, the motor speed is reduced voltage is too low, such as amounted to less than 70% of rated speed, start centrifugal switch would be closed, due to start around the leader time electricity and heat and even burn winding and capacitors.

Do not frequently switch motor. Immediately halt this is because the pump will produce reflux, if boot, can make the motor load startup, cause the start current is too large and burn winding.

Do not let water pump overload for a long time, don't smoke sediment concentration of water, the operation of electric pump dehydration time shoulds not be too long, lest make the motor overheating and burning. Units in operation, the operator must observe whether its working voltage and current on the nameplate, within a prescribed value if they do not conform to should make the motor stop, find out the reasons and troubleshooting.

Direction of rotation of the motor to correct. Should make clear direction of rotation of the motor, there are many types of submersible pump forward and inversion are available out of the water, but the reverse when the water yield and large current, its reversal after a long time will damage motor windings. At ordinary times to check the motor, such as found by the crack, damage to the rubber sealing ring, or failure, etc., should be timely replacement or repair, prevent water infiltration submersible pump.