Submersible pump mechanical maintenance

Submersible pump routine maintenance. Daily check the power cord for damage, the absolute prohibition of leakage submersible pump operation. Check the pump body daily damage, to ensure that the motor does not leak electricity at work. After the operation, should promptly clean the debris attached to the pump, the pump rinse. To ensure the normal operation of submersible pumps, must follow the following requirements. Before using the submersible pump, use a megger to check the motor insulation resistance, the minimum value of which can not be less than 50MΩ.

Water immersion motor should open the irrigation plug, fill the clean water and then tighten the plug, irrigation plugs can not screw off directly into the well. Before use, check whether the cable is broken or broken. If damaged, it should be replaced in time to prevent leakage. Submersible pump should be injected into the pump before entering the water, and then idle for 1-2 minutes, and start twice, check the start and idle is normal, the steering meets the requirements. If the turn to the contrary, any two-phase wiring can be exchanged. Check whether there are cracks Yang pipe, the connection is solid. Submersible pump down and lifting, must not allow the dead cable, in order to avoid damage to the cable or the connector at the disconnection, resulting in unnecessary accidents. Should use wire or pallets to go down and lift.

The power supply voltage should be controlled within ± 5% of the rated voltage so that the motor can work normally. If the voltage is too low or too high, the motor can not continue to use, so as to avoid the motor over-voltage or under-voltage work under long-term damage. Submersible pump dive into the water should be suspended vertically, not oblique. Into the water to move the water level of 5 meters is appropriate. Submersible pumps can not deliver water or mud with high sand content. Submersible pump actual lift should be 0.8-1.1 times the rated head use to improve unit efficiency, save energy, while avoiding motor overload.

Submersible pump motor wiring must be solid, so as to avoid motor phase loss of motor burn. Cable must always check for cracks, scratches and other conditions, there are timely replacement or repair. Oil immersion motor oil spills in the event, should promptly to the manufacturer or repair point repair, replacement of sealing components. Flooding motor should always clean the motor cavity sand, replace the motor cavity water. Submersible pump operation six months after the maintenance check, replace the damaged parts. Submersible pump, the flooding motor should be placed within the clean water motor, the pump clean, oiled anti-rust, and placed vertically on dry place.

Submersible pump does not start after the water, less water or intermittent water

The reasons for the failure are: over-current parts such as filters, impeller, diversion shell, Yang pipe and other components are blocked, or Yang pipe rupture, then often appear ammeter readings and pointer violent swing, the unit, pipeline vibration The phenomenon should be shut down to check and clean up, if necessary, should be replaced Yang pipe; unit normal operation, but less water, the reason is overcurrent part of the local block, supporting unreasonable, or need to lift more than the rated head of the pump too much, this situation Need to change a higher lift pump, it may be the impeller turned the opposite direction, just the introduction of any two-phase exchange can be, if the seal ring or impeller wear, you should promptly replace the seal ring, repair or replacement Impeller; unit rotation normal, but no water, the main reason is that moving water level in the pumping process decreased too much, can be closed on the small water gate valve to reduce the amount of water, or pump down, if the depth of decentralization reaches or exceeds the provisions of the pump The use of the range is still not ideal, then the pump improper selection should be replaced by a smaller flow pump.