especially the sleeve, easy to burn if worn

Start capacitance becomes small. When the fan with a long time, the capacitance is reduced, resulting in the motor starting torque becomes small, heater with fans unable to drive the load. Many times the reason causing the fan blades do not turn, is the problem of poor maintenance. If the power is turned off manually rotating blades struck stiff, you should use some lubricants dropped shaft, it can be lubricated, it will not affect the motivation to drag blades. For non-rotating blades abrasion, the easiest thing is to replace the parts, electric stand fan especially the sleeve, easy to burn if worn