Fans troubleshooting & Tips
Q1: What should be the height of ceiling fans from the floor ? A1: Minimum distance between ceiling fan and floor should be 2.3 Mtrs ( Approx 7.5 Ft.). Q2: What should be the distance between ceiling and ceiling fan ? A2: Minimum distance between ceiling or a projecting beam & ceiling fan blades should be 0.25 Mtrs ( Approx 9.5 Inches ) Q3: What should be the distance between ceiling fan and nearest wall ? A3: Horizontal distance between ceiling fan blade tip & nearest wall should be 0.5times the fan size. Q4: What should be the clearance between two nearest fans, if more than one fan are to required in a hall? A4: Minimum clearance between two consecutive fan hooks should be twice the fan size to be fitted. Q5: What is fan size ? A5: Fan size is the diameter of a circle traced by fan blades, while rotating. Q6: What are the standard sizes ? A6: Standard sizes available in market are 600mm, 750mm, 900mm, 1050mm, 1200mm, 1400mm, and 1500mm Q7: What is the air delivery ? A7: Air delivery is the volume of air pushed by the ceiling fan under test conditions as prescribed in IS 374. Q8: What is the efficiency of the ceiling fan? A8: Efficiency of a ceiling fan is a ratio of air delivered by fan in Cubic Mtrs Per Minute and electrical power input in Watts, when fan is operated at rated voltage. (This is also known as a ?service value? of a fan ). Q9:What is rated voltage? A9: Rated voltage is the voltage written on the rating plate of the fan.( and is normally equal to the supply voltage available in the house ) Q10: Why all ceiling fans have three blades? A10: Minimum three blades are required to take care of uniform air-flow and aesthetics simultaneously. Q11: Does four blade fan have more air delivery than three blades ? A11: For some makes of fan it is more, for others it is same as three blade fans. Q12: Does wider blade contribute to more air delivery ? A12: Not necessarily Q13: Does a fan consume same power at all speed-positions ? A13: No, at low speeds total power consumed by the fan ( including the power consumed by the regulator ) is lower than that at high speeds. Q14 : Does change of capacitor to higher value improve the performance of the fan. A14: It may increase the speed marginally, however power consumption also goes up resulting in reduced efficiency and reduced motor life. Q15: Can one use an electronic speed controller with a given fan ? A15 : It is not advisable to use electronic controller available in market ( unless the fan manufacturer recommends to do so ) as majority of them generate humming noise in the fan at low speeds. It also affects the life of a capacitor in the fan. Q16 : How do I select the size of the fan? A16: Following are the recommended sizes Q17: WHAT ARE THE NECESSARY CHECKS TO BE CARRIED OUT BEFORE INSTALLATION OF A C/FAN ? |
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Table, Pedestal, Wall Fans Q1: Does four blade table fan give more air than a three blade fan ? A1: Not necessarily ( In fact the air deliveries of table fans can be perceived at the sales counter ) Q2: Do Table, Wall & Pedestal fans require frequent lubrication? A2: Almost all fans in this category use Bush-Bearings which need lubrication. Every manufacturer gives the details of type & quantity of lubricant to be used. Q3: Is a plastic fan less durable than a metal fan ? A3 : No Q4: What are the specific benefits of TPW fans over the ceiling fans? A4: All TPW fans give high air velocity as compared to ceiling fans, which give faster relief in summer. Portability of Table & Pedestal fan is another advantage over the ceiling fan. They cover larger area due to oscillating mechanism and have an advantage of personalized fans in non-oscillating mode. Q5 : Why there are only three speeds for TPW fans while Ceiling fans have five? A5: All fan manufacturers follow relevant Indian Standards for basic-construction & test procedures of the fans. IS stipulates three speeds for TPW fans. |
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