[Dsg-dc] [Revised Logentry] Gas control

[Brian Eng]

Morgan,

Do you want me to try and get automatic mode working again or should I just wait until Monday?

----- Original Message -----
> From: mcookiv at jlab.org
> To: dsg-dc at jlab.org, mestayer at jlab.org
> Sent: Sunday, August 26, 2018 1:25:04 PM
> Subject: [Dsg-dc] [Revised Logentry] Gas control

> Gas control
> 
> 
> Lognumber 3591494 . Submitted by mcookiv on Sun, 08/26/2018 - 13:14.
> 
> Last updated on Sun, 08/26/2018 - 13:23 Logbooks: 	HBDC
> Entry Makers: 	mcookiv
> 
> 
> Called for a minor alarm on mix 1 pressure; at that time mix 1 pressure was
> 111psi and mix 2 pressure was 73psi. Charted both and saw that mix 1 pressure
> was steadily increasing and mix 2 pressure was steadily decreasing. Came in and
> the 'Flow Control Selector' and both mixes 'Press Mode' selector were set to
> 'manually controlled'. Attempted to set all to 'Auto' but the system defaulted
> back to 'manual'. However, both AR+CO2 setpoints did change back the correct
> value for steady state operations (mix 1= 43 lpm, mix 2= 18 lpm). Set mix 1 ~
> 41 lpm, mix 2 = 18 lpm.
> 
> Told run coordinator that the minor alarm will probably remain overnight but if
> it changes to major to call me directly.