1. Before operation, megohmmeter shall be used to check the insulation resistance of motor stator winding to ground, and the minimum value shall not be less than 50 megohm.

   
   

2. Check whether the cable is damaged or broken. If there is any damage, it must be replaced in time to avoid leakage; the cable section should match the current.

3. When the voltage exceeds ± 10% of the rated voltage, the electric pump shall not be started.

4. In order to ensure the use safety, the grounding wire in the four core cable must be reliably grounded to prevent electric shock accidents.

5. When the electric pump submerges into the water, it should be lifted vertically. It is not allowed to land horizontally or fall into the sludge. Stop using the pump should be lifted clean, placed in a dry place, and pay attention to antifreeze.

6. It is forbidden to use the cable as the hoisting rope for installation.

7. Check the running direction of the rotor, which should be clockwise when viewed from top to bottom.

8. The outdoor switch or grounding wire end shall be provided with rain proof and moisture-proof measures. It is forbidden to touch the switch when wet or barefoot to prevent electric shock.

9. When moving the electric pump, the power supply must be cut off. When the electric pump is running, people shall not touch the water source, so as to prevent personal accidents caused by electric leakage.

For more information about pump industry, please pay attention to China pump industry website by.99114.com.