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Deep well Submersible pumps how to work underwater?

Views: 0     Author: Elena E     Publish Time: 2022-04-20      Origin: Site

Deep well Submersible pumps work underwater. It is compact and lightweight, and does not require a long drive shaft to pump water from the well. Therefore, submersible pumps are very suitable for rural well water irrigation. The most widely used is the JQB submersible pump. This kind of submersible electric pump adopts waterproof measures such as mechanical seal or air seal to keep the inside of the motor dry and free from water intrusion. Pay attention to the following points when using:


(1) Check whether the seals at the air vent, water drain, oil drain and cable joints of the pump are loose. If they are loose, they must be tightened.


(2) Use a 500-volt shaker to check the insulation resistance, which should not be less than 0.5 megohm. If it is lower than this value, open the water and vent holes, and dry or dry it in the sun.


(3) Check the cable, if it is broken or broken, it should be replaced to avoid leakage.


(4) Before starting, check all circuits and switches to see if the wiring is correct and reliable, and then idle on the ground for 3 to 5 minutes (the time should not be too long, so as not to damage the parts or burn the motor windings), and check that the motor is running Whether the direction is correct, if there is no problem with the above, it can be used in water.


(5) When the submersible pump is used in water, the cable must not be stressed, and it should be tied to the wooden frame at the wellhead with a rope. The maximum depth of the electric pump into the water is 3 meters, and the minimum depth is 0.5 meters (from the center of the impeller).


(6) During operation, the change of the water level in the well should be observed frequently, and the motor must not be exposed to the water surface, and must not be trapped in the mud, so as not to affect the heat dissipation of the motor and burn out the windings. The electric pump should be raised and lowered at any time as the water level in the well changes. If the water volume is reduced or interrupted, the cause should be immediately identified or the machine should be shut down for inspection. The cable must not be rubbed against the well wall, so as to prevent the well water from penetrating into the motor along the cable core after the cable is worn.


(7) For submersible pumps with new or re-replaced integral sealing boxes, after 50 hours of use, check whether the sealing is good, and check once a month in the future, and check whether the shielding sleeve between the rotor and the stator of the motor is well sealed.


(8) After one year of use, the rust condition of the pump should be checked, and the rust should be removed and painted. If the submersible pump is not used for a long time, it should be carefully checked and stored in a dry and ventilated house.


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