From: "Stuart, Ralph" <Ralph.Stuart**At_Symbol_Here**KEENE.EDU>
Subject: Re: [DCHAS-L] Fume Hood Sash Mechanism Inspections
Date: Thu, 4 Jan 2018 15:38:04 +0000
Reply-To: ACS Division of Chemical Health and Safety <DCHAS-L**At_Symbol_Here**PRINCETON.EDU>
Message-ID: 38277748-8565-4E8F-A453-0DBCF94B2A84**At_Symbol_Here**
In-Reply-To <1109037139E1524980CF9CBEB2476618010B0C15BB**At_Symbol_Here**>

> >Has anyone experienced issues with sash mechanisms? I had one fail yesterday from what initially appears to be failure of the belt of the counterweight mechanism. These fume hoods are fairly new and I am wondering how often it is recommended that these mechanisms be inspected.

I have been through discussions on this issue in other schools, although the failures were at the 20+ year mark. For this reason, the problems were easy to blame on historic chemistry being too aggressive for the hardware. The in house mechanics were able to resolve many problems by disassembling the hood face and oiling the moving surfaces. But these were old enough hoods that there was no electronics involved in monitoring face velocities, control systems, etc. It may be a more complicated proposition with 21st century hoods.

Good luck.

- Ralph

Ralph Stuart, CIH, CCHO
Environmental Safety Manager
Keene State College
603 358-2859


For more information about the DCHAS-L e-mail list, contact the Divisional secretary at secretary**At_Symbol_Here**
Follow us on Twitter **At_Symbol_Here**acsdchas

Previous post   |  Top of Page   |   Next post

The content of this page reflects the personal opinion(s) of the author(s) only, not the American Chemical Society, ILPI, Safety Emporium, or any other party. Use of any information on this page is at the reader's own risk. Unauthorized reproduction of these materials is prohibited. Send questions/comments about the archive to
The maintenance and hosting of the DCHAS-L archive is provided through the generous support of Safety Emporium.