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How You know you have negative or positive pressure.

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  • Fan
  • Systems
Last response: in Systems
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April 14, 2014 11:19:10 PM

I can say I know I have negative pressure. I unplugged one fan while the rest were spinning, and it slowed down then reversed direction as the air came down through it and was being pulled out by the other fans.

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April 14, 2014 11:25:13 PM

Just for future advice, dont move/remove any connections while the power is on.
As for the pressure the easiest way to know is just to count intake v exhaust. More intake, more positive and so on.
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April 14, 2014 11:37:19 PM

Or use a Static Pressure gauge
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April 15, 2014 12:03:06 AM

If anyone in your proiximity smokes just ask them to blow a bit of smoke in the direction of the fans. Just make sure you dont get too much smoke in there :D 
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April 15, 2014 10:51:52 AM

yeah I know it wasn't the smartest.....but I still thought it was cool xD
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