DCHAS-L Discussion List Archive

I have a exhaust fan design question that someone in this group may be able to comment on. We have a spray paint booth in our wood shop (2014-vintage) with a lab style fan (Vektor-H Laboratory Exhaust System - Greenheck Fan) on it. It is turned on and off as needed with a off/low/high switch, but when we turn it on, there is no apparent response for about 5 minutes. This makes it difficult to convince the booth users that the system is working, since they may complete their work in the booth (e.g. spray painting a piece) before the system is fully operational.

I realize that most lab fan systems are on 24/7, but I wonder if anyone has run into similar situations with systems which are designed to be turned on and off routinely?

Thanks for any thoughts about this.

- Ralph

Ralph Stuart, CIH, CCHO
Chemical Hygiene Officer
Keene State College

ralph.stuart**At_Symbol_Here**keene.edu

---
This e-mail is from DCHAS-L, the e-mail list of the ACS Division of Chemical Health and Safety.
For more information about the list, contact the Divisional secretary at secretary**At_Symbol_Here**dchas.org