Which way around does my PSU internal fan go - feel really stupid

event2020

event2020

event2020

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5 Jan 2011
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Hi all - I have made a embarrassing newbie like error..

I have a OCZ ZS Series 750W PSU and if you are not familure with this model it has the one large fan on the top of the unit and the rear port (which attaches the PSU to the case is just a simple vent (no fan).

I was cleaning the inside of my Computer Case and I notice that there was some small dust/gunk on the fan of the PSU so I removed the PSU, removed the top of the case to access the fan, cleaned the fan, blew the PSU out with compressed air and....

I forgot to make a note of which way around the fan goes and I have a complete mind block - should this fan be pulling air from outside the case (the most likely option) or sucking it from in the case and blowing it out?

Sucking it in makes more sense as the air outside the case will be colder than that inside the case but I just wanted to make sure and ask in here - no point in potentially blowing the PSU up...

Thanks all.
 
PSU sucks air from case and vents air out the back where the mains plug is.

EDIT: Power supplies can run quite warm - you don't want to be dumping that into the case just to remove it again.
 
Last edited:
Rroff said:
PSU sucks air from case and vents air out the back where the mains plug is.

EDIT: Power supplies can run quite warm - you don't want to be dumping that into the case just to remove it again.
Click to expand...

That's what I thought but I was having a total mind block, or melt down or something - feel so stupid but would rather ask than get it wrong.:o

Thanks Rroff :)
 
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