RE: Replacing fans in equipment?

["Paul Gale" <groups2@xxxxxxxxxxxxxxxx>]

OK, I need to test it and find out what it is...

Paul.



> -----Original Message-----
> From: ukha_d@xxxxxxx [mailto:ukha_d@xxxxxxx] On Behalf
> Of Jim Noble
> Sent: 20 June 2008 10:40
> To: ukha_d@xxxxxxx
> Subject: Re: [ukha_d] Replacing fans in equipment?
>
> Paul Gale wrote:
> > I have two really good UPS's in my new node0 (thanks Andy).
> > Trouble is, they have quite loud cooling fans which are the very
high
> performance type i.e. move a lot of air but are very noisy.
> > I'd like to modify or replace them with something a little
quieter. I
> need to first check to see if they're mains or LV though.
> > I was thinking it might be better just to mod them to reduce the
> speed and hence noise a little, so is it just a case of adding a
> variable resistor in series or is it more complex than that?
> >
>
> A resistor is only going to work for a DC fan. You may be better off
> finding a quieter fan if it's AC. Or if there is any scope for it, a
> larger diameter but slower spinning fan ought to be quieter.
>
> Jim
>
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