Re: Replacing fans in equipment?

[Jim Noble <yahoo-groups@xxxxxxxxxxxxxxxxxx>]

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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