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Maintenance and Care of Submersible Pumps for Wells
2025-06-26
(1) Regularly test and record the insulation resistance. If the resistance is below the specified value, the cause should be identified and the slurry pump should be treated accordingly. (2) The mechanical seal in the well submersible pump, which serves the functions of sand prevention and sealing, directly affects the safe operation of the electric water pump. Therefore, when its leakage exceeds the specified amount, timely maintenance should be carried out. During maintenance, in addition to removing the seals to be replaced, the dynamic and static sealing rings should also be replaced or ground as appropriate. (3) Regularly check the oil bladder of the oil-filled electric water pump. If the oil bladder is damaged, it will cause oil leakage at the lower part of the oil-filled electric water pump. (4) For well submersible pumps, maintenance of vulnerable parts should generally be performed once a year or after 5000 hours of operation for the slurry pump.
The introduction about well submersible pumps and their maintenance and care covers the above four points. Ensuring the correct installation of the pump assembly and pipeline system is important because pump installation and use can be complicated and the application scenarios are quite limited. If there is a backup pump, it is best to alternate the use of the two pumps. If the pump gets stuck, it can only be repaired. A mesh screen can be added at the water inlet to prevent excessive debris from entering the pump, which greatly reduces the chance of pump jamming! Pumps should be considered from both electrical and mechanical aspects. For the mechanical aspect, mainly review previous maintenance records for comparison. Next is the electrical aspect, where it is necessary to understand the power of each pump motor and have a certain understanding of its control system. For slurry pumps using mechanical seals, it is essential to ensure the supply of shaft seal water and strictly prohibit dry running, otherwise the mechanical seal will be damaged. Daily maintenance of the pump includes ensuring the bearing water pressure and flow meet the requirements, adjusting or replacing the packing tightness at any time to avoid shaft seal slurry leakage, and timely replacement of the shaft sleeve. When replacing bearings, it is necessary to ensure the bearing assembly is dust-free and the lubricating oil is clean. The bearing temperature during pump operation should generally not exceed - and the maximum should not exceed . It is necessary to ensure the coaxiality of the motor and pump, ensure the elastic pad in the coupling is intact and correct, and replace it promptly if damaged.
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