T wrote:
Hi All,

Tip: If your fans are noisy, blowing them out won't help
things. It is time to replace them.

If your fan is clogged, DO NOT USE a shop air gun
to blow it out! Use a can of compressed air
that states it is for electronic equipment and
capture the fan blades so they do not rotate
when you hit them with air. Shop air guns
have oils and other stuff yo do not want all over
your circuit boards and their air flows can cause
static electricity build ups.

Fans, when ran backwards with external air, become
generators and send current back down their wires,
which can damage your motherboards. And certainly
damage any PWM circuitry on the fan. So do not
let the blades spin when blowing them out. Yes,
it is fun to watch them whirl -- don't do it anyway.
-T

I have always used my air compressor on my home computers.
Pinpoint nozzle, 30 psi.
I am adverse to the store bought commercial compressed gaseous chemicals
for the masses stuff. It's not air, it's di/tri/tetra/penta fluoro
butane ethane HFC-1xx, etc.
And I really don't like the denatonium benzoate or denatonium
saccharide. That stuff stays on the electronics, keyboard, hands, etc.
Gets into everything, eyes, nose, mouth, etc. C6H5 with a CH2Nx added.
If you must use canned duster for portability at a customer's location
then get the industrial HFC-134a variety without bitterant and not the
HFC-152 version.