How to maintain submersible pump

1. During the operation of the submersible pump, the flow of current, voltmeter and water shall be often observed to ensure that the submersible pump operates under rated working conditions.

2. The valve shall be used to adjust the flow and head, and overload operation shall not be allowed.
Stop the operation immediately under any of the following conditions:
1) The current exceeds the rated value at rated voltage;
2) Under the rated head, the flow is greatly lower than that under normal conditions;
3) Insulation resistance is lower than 0.5 megohm;
4) When the dynamic water level drops to the pump suction;
5) When the electrical equipment and circuit are not in conformity with the regulations;
6) When the electric pump has sudden sound or large vibration;
7) When the protection switch frequency trips.

3. Constantly observe the submersible pump, check the electrical equipment, measure the insulation resistance every half a month, and the resistance value shall not be less than 0.5 megohm.

4. Each drainage and irrigation period (2500 hours) shall be provided with a maintenance protection, and the replaced vulnerable parts shall be replaced.
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