i)To test for the presence of switch of 
buttons : "ON", "OFF", "LOW", "meduim", "high " 

ii)To test for the presence of 3 wings 

iii)To test the presence of colour

iv)To test the presence of metal of which fan is made 

v)to test the fan should rotate

1. check the company name should be there there.        
2.check whether  off button is working or not. 
3.check whether the fan runs accoring the numbers like i, 
ii, iii ..
4. check the fan should have three wings.
5. check the fan should rotate clockwise direction.
6. check the company should give warranty card to the fan.
7. check the security of the fan, whether if we on the      
switch the fan should not fall down.  
8. check the fan should not make sound.

Check for the following conditions,
1. Fan has three wings?
2. Fan speed changes as per the regulator setting
3. Fan rotates/stops when switched on/off(switch board)
4. Fam rotates/stops by switching on/off the regulator
5. Check the minimum and maximum speed of the fan