HI Bethany-

The valve(s) on the turbo pump(s) are normally open solenoid valves.  
They close with the power on, and will open as soon as the power goes 
off--keeps oil from backing up into the flight tube.  When you shut it 
down your self, with the power staying on, there is a delay that lets 
the turbo pumps spin down before the system vents.  You loose that delay 
if the power goes out.

Best to shut it down your self.  I might be good time to clean the 
source too.

take care,

gerry


On 10/27/2016 5:29 PM, Theiling, Bethany wrote:
> Hi everyone,
> My building is undergoing some electrical work this weekend, in which the power will be off for a few hours. The company offered generators for lab equipment that I'd like to take advantage of. I don't yet have a UPS.
> The problem is, my IRMS is hardwired into the power conditioner, which is hardwired into the building. So, in order to set up a generator, they basically have to wire the generator to the breaker. This involves (they think) 15-30 sec of no power to the power conditioner and IRMS.
> My question is: how long without power can the Delta V Advantage go before it vents? It usually takes a few minutes for my turbo to start winding down. Could I go the 30 sec, or even a minute without power? Or, is it just better to vent the instrument purposefully tomorrow night and not risk anything?
> As always, many thanks.
> Bethany
>
> Bethany Theiling, Ph.D.
> Assistant Professor, Geochemistry
> Department of Geosciences
> University of Tulsa
> 800 Tucker Drive
> Tulsa, OK 74104
>