H960 question, and part available

[O. Sharp]

Jay West wrote:

> One of my H960's actually came to me with a fan already installed in the 
> top. I have a few loose fans, and my other H960 has no fan so I'm getting 
> ready to install one of those condor fans in my H960. I am wondering if the 
> H960 fans at the top are supposed to pull air in, or push air out? I'm more 
> interested in how DEC actually shipped them rather than "it'll work either 
> way".
> 
> I checked my H960 and it's set to pull air in from the outside downward into 
> the rack. Of course I have no way of knowing if that's how it originally 
> was, or if some collector/scrap person put it in backwards themselves. 
> Anyone set me straight on this? I suspect that's how it's supposed to be 
> given the channel on top for an air filter of some type.

I'm in the early stages of work on a PDP-12, and found that one of the 
two ceiling fans was disconnected - turns out it has a bad squeak; I 
suspect they unhooked it so they didn't have to listen to it - and 
discovered, to my surprise, that both fans are set to suck air downward.

So not a _definitive_ answer, but certainly another data point suggesting 
yours is normal.  :)

                   -O.-