[Dsg-dc] [Revised Logentry] Gas control

mcookiv at jlab.org mcookiv at jlab.org
Sun Aug 26 13:25:04 EDT 2018


Logentry Text:
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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.  

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This is a plain text email for clients that cannot display HTML.  The full logentry can be found online at https://logbooks.jlab.org/entry/3591494
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