1. The working head can not be bottom-up placed, otherwise the residual liquid will flow into the bearing and the motor.
2. It is recommended that the medium shall not exceed the overflow orifice at the middle of the working head.
3. The device shall be thoroughly cleaned up or further be blown to dryness after it is out of commission.
4. The rotating speed of the motor shall be regulated from lower to higher when operating, and be regulated to the lowest after it is out of commission.
5. Regularly rotate the main shaft to check whether the weight is uniform or whether there is any irregular noise, if any irregularity is found, the bearing shall be replaced or repaired in time.
6. The working head shall be easily connected and tightened with the motor, otherwise forcible operating may damage the thread.
7. If the motor stalls or does not rotate, the carbon brush shall be replaced by a professional electrician.
8. Do not operate without any medium.