1. The submersible pump below 11kw is allowed to start directly. Submersible pumps above 13kw shall be equipped with step-down starting cabinet. To maintain the safe operation of the submersible pump.
2. In order to prevent the rotor of submersible pump from jumping up in an instant and reduce the starting load. When starting the submersible pump, the stroke of the outlet valve shall be closed to 3 / 4. (leave 1 / 4 air gap. In order to deflate) slowly turn over after starting water outlet. The working point of the water pump shall be controlled at the proper position.
3. After start-up and operation. Monitoring and observation of water level change shall be enhanced. Ensure that the submersible pump operates within the operating range. The submersible pump can be put into formal operation before running smoothly.
4. 5 hours after the submersible pump is put into operation for the first time. Stop the machine and measure the thermal insulation resistance quickly. Its value is not less than 0.5m Ω. Ability to continue to use.