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determining air flow direction of a fan.. - Page 3

post #21 of 31
Quote:
Originally Posted by ehume;12527923 
Forgot about Papst. Some of theirs turn clockwise, too.

Must be Australian.
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post #22 of 31
Quote:
Originally Posted by Crazy9000;12527952 
Must be Australian.

Naah.. its German. biggrin.gif
post #23 of 31
Quote:
Originally Posted by Crazy9000;12527952 
Must be Australian.

lol i'm assuming this is a reference to the toilet flushing thing right?
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post #24 of 31
the side that has the 'bar' on it is the exhaust side, but their has always been a little arrow on the side of the fan somewhere engraved into the casing.

Fan_Arrows.JPG
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post #25 of 31
sticker is exhaust side as mentioned above
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post #26 of 31
Quote:
Originally Posted by Crazy9000;12527952 
Must be Australian.

Actually papst fans are german made. They are really good fans tho!
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post #27 of 31
Quote:
Originally Posted by pyro_dude;12549897 
Actually papst fans are german made. They are really good fans tho!

Good and loud. And clicky. I did have an EBM fan (merged with Papst) that was all steel - frame, struts, blades, hub. Bet that'll still be working when we've all passed from this mortal coil.
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post #28 of 31
yeah sticker side... aka... the side with the wires coming from the center out.
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post #29 of 31
WTH! There are markings showing the airflow. I never saw this before, but its probably cuz I never looked hard enough. Anyways, I always went with the side were the blades were easily accessible was the pull and the side with the slight guard was the blowing side.
post #30 of 31
Quote:
Originally Posted by faraz1729;12523497 
The absolutely sure-fire way without turning on the fan is to judge based on concavity and convexity.

The concave side will exhaust. The convex side will intake.

This is the surest way. It's just fluid mechanics. wink.gif
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