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What is the content of regular inspection and repair of the submersible pump?

What is the content of regular inspection and repair of the submersible pump?

  • Categories:Technical Info
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  • Time of issue:2019-05-29
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(Summary description)Regularly check the insulation resistance of the record. Use a 500 volt megger to periodically measure and record the insulation resistance of the pump windings to the casing.

What is the content of regular inspection and repair of the submersible pump?

(Summary description)Regularly check the insulation resistance of the record. Use a 500 volt megger to periodically measure and record the insulation resistance of the pump windings to the casing.

  • Categories:Technical Info
  • Author:
  • Origin:
  • Time of issue:2019-05-29
  • Views:0
Information

(1) Regularly check the insulation resistance of the record. Use a 500 volt megger to periodically measure and record the insulation resistance of the pump windings to the casing. If it is found by measurement that the insulation resistance gradually decreases or approaches zero, it reflects that the insulation of the cable, winding or joint part has been damaged, we should be take the submersible pump outside from the deep well for maintenance.

If the signal line is short-circuited to the ground, the oil-filled motor indicates that it is already lean or the inside has been filled with water. The submersible pump should be used to refill or replace the insulating oil. In order to know whether the lean protection circuit in the control box is reliable, the signal line can be grounded artificially, and the intermediate relay is observed to operate and cut off the power.

(2) Regularly check the mechanical seal. When the submersible pump is used in the process, the mechanical seal will cause the leakage of the child to exceed the regulations due to the wear and tear, and the maintenance must be carried out in time. In addition to the replacement of the rubber sealing element during maintenance, the moving and static sealing ring may be replaced or polished.

Regularly correct the operating current of the protection switch. The overcurrent relay or overheating relay in the submersible pump protection switch should be regularly calibrated to correct its operating current to avoid the effect of overload protection.

(3) Regularly check the oil tank of the oil-filled motor. When it is found that the lower part of the oil leaks, the oil tank is generally damaged. The maintenance steps are as follows:

1 Straight the pump on the frame, prepare the container for oil, loosen the coupling bolt between the base and the lower end cover, and remove the above parts and oil bladder.
2 Pour out all insulating oil.
3 Analyze the cause of oil leakage. If the end of the oil bladder is not embedded in the lower end cap, it should be reassembled. If the oil bladder is broken, it should be replaced with a new one. The new oil sac should be assembled without pressure.
4 Assemble according to the reverse program of disassembly, and then verify the reliability of the lean signal once.

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