When the thickness, wave angle and wave height of the water curtain are fixed, the flow path of the air in the water curtain is fixed, and the boundary conditions of the air flow are determined.

Because the air outlet of the fan is unclear, the air is blocked, the pressure rises, the motor forms an overpressure and overload, the pipeline is blocked, and the equipment ammeter rises.

Improper design, poor dynamic characteristics, forced or self-excited vibration during operation

When the frequency conversion speed regulating fan adopts the frequency converter, the smaller frequency should not be lower than 30Hz, and a small frequency limit value should be set in the frequency converter