Also, the valves are normally open....

Paul

At 12:45 PM 23/11/2009, you wrote:
>Jason,
>
>You can close each changeover valve to the waste turbo by holding 
>down the keyboard control key followed by clicking on the valve.
>
>Andy
>
>
>
>----------
>From: Stable Isotope Geochemistry [mailto:[log in to unmask]] 
>On Behalf Of Jason Curtis
>Sent: Monday, November 23, 2009 12:39 PM
>To: [log in to unmask]
>Subject: [ISOGEOCHEM] How to isolate changeover valve on Finnigan 252
>
>Hi All,
>Does anyone know how to close all the valves in the changeover block 
>in a Finnigan 252 using Isodat 2.0?  I need them all closed for 
>maintenance.   Seems like it should be do-able but they appear to 
>have made the software completely dummy proof.
>If there is no software solution, I figure I can just remove air 
>pressure to the valves manually.  My assumption is that they are 
>normally closed valves.  Can anyone confirm this?
>
>Thanks, Jason
>
>Jason Curtis, Ph.D.
>Stable Isotope Mass Spec Lab manager
>Senior Associate-In Geochemistry
>Department of Geological Sciences
>241 Williamson Hall
>University of Florida
>Gainesville, FL 32611
><mailto:[log in to unmask]>[log in to unmask], office 352-392-2296
>lab 352-392-3344, fax 352-392-9294