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1, before operation, use megger to check the insulation resistance of motor stator windings to ground, the minimum shall not be less than 50 megohms.
　　
2, check the cable for damage, broken and so on. If damaged, it must be replaced in time to avoid leakage; cable cross-section should be matched with current.
　　
3, the voltage exceeds the rated voltage of ± 10%, shall not start the pump.
　　
4, in order to ensure the use of safety, the ground wire in the four-core cable must be reliably grounded to prevent electric shock accident.
　　
5, electric pump into the water, it should be vertical lifting, not allowed to place the ground, but can not sink into the sludge. Stop using the pump should be lifted clean, placed in a dry place, and pay attention to antifreeze.
　　
6, prohibit the use of cable as a lifting rope.
　　
7, check the rotor running direction, looking down from the clockwise rotation should be.
　　
8, the outdoor switch or grounding should be rainproof, moisture-proof measures, wet hands or barefoot touch the switch is prohibited to prevent electric shock.
　　
9, mobile pump, you must cut off the power, pump in operation, people may not touch the water to prevent personal injury accident occurred.
　　
10, It is forbidden to run the motor out of phase. If it is found that the fuse is blown, check the reason before using it, and do not arbitrarily bold the fuse.
　　
11, mixing submersible sewage pump operation, there should be someone management, if there is an abnormal phenomenon should be immediately shut down to check and troubleshoot. (Refers to not equipped with automatic protection case).
　　
12, the electric pump in the working medium conditions for normal operation for six months, the oil chamber seal should be checked, such as oil in the oil chamber was milky or water sedimentation, should be promptly replaced 10-20 mechanical oil and mechanical seals. For the use of poor working conditions in the pump, it should be more regular maintenance.
　　
13, the user should select the appropriate flow head according to the actual working conditions, in order to achieve the best results, the parameters shown on the pump nameplate or manual for the pump the best use of working conditions point, the user can choose between (0.7 ~ 1.2) Double the best use within the flow, prohibit the use of ultra-flow, otherwise the flow is too large, too easy to overload the motor.
Sewage pump usage and safety practices
Compared with the general horizontal pump or vertical sewage pump, sewage pump compact structure, small footprint. Easy installation and maintenance Small sewage pump can be installed freely, large sewage pump are generally equipped with automatic coupling device can be automatically installed, installation and maintenance quite convenient.