Electric Ceiling Fans

Electric Ceiling Fans

1. Where?

   • On edges of the blades
   • On top surface
     • Difficulties in cleaning
   • Untouched surface
   • Hard to reach places

2. Why?

   • Dusty
     • A charge on the blade surface
     • Blades move through air
       • Cause a charge on the blades
     • Attracts dust
     • Dust in surrounding
     • A charge on dust particles
     • Attracted to electrical things
     • Dangerous for user to clean
       • Unbalance
         • Might fall down
           • Cause serious injuries

3. When?

   • It's dusty
     • After a few days
     • when fans are switched on for a long period of time
     • Speed of fan is high
   • Cleaning
     • When the blades are dusty

4. How?

   • To remove dust
     • Feather duster
     • Wiper
     • Manually
       • Cloth
     • Vacuum cleaner
   • It gets dusty
     • Static electricity attraction
       • Dust circulates through the room
     • Ionisation
       • Positive
       • Negative

5. What?

   • Dust particles
     • Dry powder
     • Tiny particles
       • Carried in air
     • Lying on...
       • Ground
       • Surfaces
       • Carried in the air
     • Man-made dust
     • Dead Cell
   • Causes it to get dusty
     • Air around the fan
     • Electrical Charges

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