It's because the blades are getting jammed up and your challenge is to find out what it is.
The motor does it, by producing a rotating magnetic field, which twists the fan blades.
First check motor amps, then amount of blades and blade size. Finally where built. If in China by unknown company, I avoid them.
A fan motor has two parts namely rotor and stator. In a table fan blades are attached to rotor and its movement appears to be clockwise. In a ceiling fan, blades are attached to stator so blades appears to be moving anti clockwise.
Typically this signifies that your starter motor has either jammed, or is faulty. To check that it has not jammed, give it a whack on the end with a small hammer, or fairly large wrench. If that does the trick, then the starter motor was jammed, if not, you need a replacement starter motor.
single-phase induction motor is used in ceiling fan.
1) clean the ball-bearings 2) change the capacitor 3) clean the blades 4) lubricate the ball-bearings that will do the job, if not then there is problem with the motor.
motor is working but wiper blades do not move.
In order to install an outdoor ceiling fan, you first must have electrical capabilities outside. You then have to assemble the fan blades and set up the motor. Mounting the fan may take skill, so it is best to follow the specific product's instructions carefully. http://www.ehow.com/how_2146727_install-outdoor-ceiling-fan.html
A ceiling fan is a common house appliance which is attached to the ceiling and uses an electric motor to rotate blades or paddles in a circular motion. Ceiling fans help cool a room by moving air which causes evaporative cooling. Fans range in size from 36 inches to 56 inches using 55 to 100 watts, a typical 48 inch ceiling fan will use 75 watts.
The fan blades are turned by an electrical motor.
Fans can have any number blades--even one! (but then you need a counterweight for balance). There are airplanes that have one blade for a propeller. There are many variables that figure into how many blades a fan has. Air velocity, noise, shape of the blade, length of the blade, material cost, vibration, etc. For airplanes sometimes they change 2-bladed propellers for three or four or more to get different flying characteristics.
Fans shaft and blades are attached to rotor shaft of the motor