hard drive data recovery

From: Don Maslin <donm_at_cts.com>
Date: Sun Jul 12 22:36:15 1998

On Sun, 12 Jul 1998, Joe wrote:

> At 12:53 PM 7/12/98 +0100, Tony wrote:
 
> >> A plastic box with a blower and a HEPA filter from one of these new vacuums
> >> to put clean air in the box at positive pressure. The front would be
> clear with rubber gloves to allow reaching in. level of clean can easily
> excess class 100. Adaquate for sophisticated drive repairs.
>
> I had been considering a range hood. The ones with a squirrel cage fan
> pull an lot of air and they aren't as noisy as the propeller type fans.

I would be a bit concerned about the pressure drop across the HEPA
filter. Frankly, I am not familiar with them but a vacuum cleaner
(centrifugal) blower is capable of rather greater pressure than a
squirrel cage blower - which is designed for volume and not pressure.
The volume of air from squirrel cage and HEPA could be insufficient to
achieve the desired pressure and flow in the box.

                                                 - don
  
Received on Sun Jul 12 1998 - 22:36:15 BST