Fault and maintenance method of electric sprayer water pump

With the development of these years, the technology of each element in the electric sprayer has been perfected. Based on the conclusions drawn from recent maintenance practices, more than 60% of the failures of the electric sprayer occur on the water pump it is equipped with, so the quality of the water pump and good maintenance in use can ensure the normal long-term operation of the electric sprayer. extremely important role. Of course, no matter how good the pump is, it has a certain service life. Generally, the service life of a good quality pump is 3 to 5 years, and the service life of a pump with poor quality is about 1 year.

The failure of the sprayer pump generally has the following situations:

1. The pressure switch fails. Generally, after the power switch is turned on, the motor does not work. Use a multimeter to measure the voltage at the two input terminals of the pump motor, and short-circuit the two ends of the pressure switch to work normally, which proves that the pressure switch is damaged. Solution: Replace the pressure switch.

2. The whole machine can work normally, but the water outlet pressure is small. After inspection, the working voltage of the battery is normal, and there are three situations that cause low pressure: the first is that there is foreign matter entering the pump head, causing the inlet and outlet valves to not mesh and seal; the solution: clear the foreign matter. The second is that the working bearing of the motor is damaged, causing the pendulum to not work properly; the solution: replace the bearing. The third type is that the valve core and valve seat are severely worn and cannot be well sealed, so that the water pump cannot be pressurized; the solution: replace the valve core valve seat.

Third, the motor does not work properly, sometimes good and sometimes bad. This phenomenon occurs when the motor reaches its working life. The motor will stop suddenly during normal operation, and will return to normal after a while. The main reason is the motor aging. The solution: replace the motor,