installing case fans, how to determine exhaust or intake?

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7 Oct 2010
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Hi all

I built a new PC yesterday, but im not sure if ive positioned the fans correctly. What I mean is, which way do you have to position the fans for them to work as exhaust or intake ?

I thought that for exhaust, the logo must face the inside of the case, is this correct ?

If it helps, I have a coolermaster CM690 case (ignore specs below as they are from my old system)
 
Just turn them on and see which way the air blows is what I do... I think it's usually the guard side is the way the air blows but then I thought that until I changed a fan last night and it was blowing the other way lol.
 
If you look carefully on the fan casing you should see a directional arrow indicating which way the air is drawn in and out through the fan.
 
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