Start deep well submersible pump, should be smooth rotation, no vibration and abnormal sound, observe the motor running current and line voltage before and after the start of any significant fluctuations. Pay attention to the first installation or maintenance after the operation of the submersible pump, test machine can only start on the ground in order to observe, if found submersible pump abnormalities, should immediately stop, check the direction of rotation is correct, the installation is appropriate, find the reasons after troubleshooting run.

Lifting should pay attention to protect the cable to prevent damage, the lifting device (such as tripod, hoist or electric hoist, etc.) should be greater than the weight of the submersible pump, and leave enough room. Before the hanging of the artificial rotation of the impeller to check whether the rotation is flexible, the main contactor contact contact is good, cable and cable joints with or without rupture, abrasion marks, motor shell grounding is reliable, and check the three-phase circuit with a multimeter line conduction

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