1. Before running the megger to check the motor stator winding insulation resistance to the ground, the minimum shall not be less than 1 megohm. Check the cable for damage, breakage and other phenomena.If damaged, need to be replaced in time to avoid leakage, cable cross-section and current matching. 3. Do not start the pump when the voltage exceeds + 10% of the rated voltage. 4. In order to ensure the safety of use, the grounding wire in the four-core cable must be grounded reliably to prevent electric shock accident. 5 electric pump in the submerged water, should be lifted vertically, does not allow horizontal placement, but can not sink into the sludge. Stop using it should be lifted clean, straight dry place, and pay attention to antifreeze. 6. Do not allow cables to be used as mounting slings. 7. Check the direction of rotor operation, from top to bottom should be clockwise. 8 mobile pump, you must cut off the power pump in operation people shall not touch the water to prevent personal injury accidental leakage. 9. Prohibit the motor phase operation, such as the occurrence of fuse blown, should check the reasons before continuing to use, not arbitrarily bold bold fuse. 10. Electric pump operation, there should be someone management, if there is an abnormal phenomenon should be immediately shut down to check and troubleshoot (refer to the case does not equipped with automatic protection cabinet). 11. Electric pump in the provisions of the working medium conditions normal operation six months after the oil seal should be checked, such as oil in the oil chamber was emulsified.
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