This was helpful for reversing the direction of exhaust fan with the help of 2 way switch. But the double ball bearing fans have a specific design of the blades. I tried reversing my heavy duty crompton transair, but the reverse flow of air was not good. Actually it was in outward direction similar to its inward suction when it is used in proper way. In short some fans are not designed to be used in both ways. Hope this comment helps everyone coming here.
This technique works for light capacitor motors only. For heavy turbo force capacitor motors to run in reverse direction, the running winding may burn out as you will be loading light gauge running winding with heavy starting current. Also you may need to forth-back blades (if detachable) for efficient air flow in reverse direction.
Reverse me starting winding ke gagah running winding me supply ja raha hai. Running winding wire gauge thick hota hai so jab starting me heavy current lega tab motor burn ho sakta hai.
Master sb agar exhaust fan bahir sa hawa andr lata ho or usay andr sa bahir ki taraf hawa phankay tou phr kia karna hoga yahi hawa sirf bahir ki taraf jaye
