Attic Fan Rotation Direction


  #1  
Old 07-25-04, 07:13 AM
J
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Attic Fan Rotation Direction

The Attic Fan in my home was working fine w/o thermostat.
Before selling it to me the seller added a thermostat.
It was working fine after I moved in.
Now it has started rotating anticlockwise.

Any ideas?

Due to this, the pulley (it's belt driven) wore off.

It's big fan (fits in 30 X 30 frame) made by Diehl.

TIA
 
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Old 07-25-04, 09:40 AM
Ed Imeduc's Avatar
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Wink

Now it has started rotating anticlockwise.
??????? Is this blowing out ???? Like it should. Did he rewire the motor???? Does the fan motor have a capacitor on it thats bad???

Due to this, the pulley (it's belt driven) wore off.
what the pulley came off the motor??? wont turn the belt???
Need more info here and some one can help you.

ED
 
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Old 07-25-04, 09:52 AM
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It (fan/motor) just changed the direction of rotation.
It used to rotate clockwise i.e. throwing air out (vents would open by the force). Now it rotates anticlockwise. Obviously the vents don't open.

I did see it rotating correctly before and after my move.
And I did not touch the wiring. I only changed the temprature setting couple of times when showing the house to a friend.

It started making big noise. So I checked and removed the belt and the pulley. The pulley is worn from inside (I guess cause of the noise) which I suspect happened since fan's (motor's) direction changed.
 
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Old 07-25-04, 11:16 AM
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I don't know alot about attic fans and the like...but could it be that the fan started running "backwards" to make the house warmer(if it was summer) or cooler(winter), as u requested with the thermostat, by drawing air from the attic.
Just a thought

Pulleys and motors I do know a little about, and the pulley wouldn't care which direction the motor turned...its just following along blindly, so to speak.
 
 

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