Due to overload of the power machine is multifaceted :
1. Flow, head over the design range. Solution because of different pumps, axial flow pump with a reduction of speed and the way to reduce the angle of the blade, mixed flow pump with the throttle, speed and turning impeller, etc..
2. Pump speed exceeds the specified. According to the law of proportion, the pump power increases with the speed of the three party, should be measured running speed of the pump, in order to account for more than the rated speed.
3. Pump rotation occurred in some of the obstacles, such as leaf debris around there, driving shaft bending, blade and the pump shell friction bearing damage,, drive belt is too tight, sometimes by packing pressure tight, blocking the pipes will engine overload phenomenon. Eliminate obstacles, the pump can be normal operation.
4. Water outlet door is not open or open angle is insufficient. The opening angle depends on the door to door body weight, buoyancy, flow momentum and cushion support. When the opening angle of 50 degrees, the gate of the loss of head has been very small, so the general requirements of the angle should be greater than 50 degrees to 60 degrees.
