You then need to wait for the blades to stop completely, and only then should you continue. The next step would be to turn off the rotation switch that's found on the wire housing of the fan, and turn it to the opposite setting. This is easy to see, as it is simply a vertical slide switch that has two positions. Usually, the down position will make the fan blow downwards, whilst the upward position will cause the fan to create an updraft. You should do your own visual check on the rotation of the blades.
When the fan is rotating in the direction of the higher side of the blade tilt, then it will be blowing the air downwards. When the fan is rotating in the direction of the lower side of the blade then the fan will be sucking the air upwards and creating an updraft.
Once you've done all of this and positioned the blades in the position that you want, then you need to turn the fan back on using the same method you used to turn it off. The fan blades will begin to rotate in the opposite rotation. You should set the fan to lower speed with an updraft if you want to use the fan for heating.
- Ceiling fans