cheryl.vorvick@LIGO.ORG - posted 20:20, Friday 18 November 2016 - last comment - 20:57, Friday 18 November 2016(31632)
CP4 has been in and out of alarm today, multiple alarms since I arrived
Not sure if this was looked at earlier in the day, but CP4 has been in alarm off and on since 7:44AM PT.
Plot attached shows MX, CP5, not in alarm, on the left, and MY, CP4, going in and out of alarm on the right.
Second attachment is the alarm log.
Images attached to this report
Comments related to this report
This is not normal behavior. Thank you for alerting me via text. TJ noted that CP4 generated an alarm yesterday morning too. The liquid level in the pump is sporadically noisy and causes the LLCV to jump up or down as a response. This noise seems to be real since we see it in the magnehelic pressure gauge at the pump. We will continue to monitor.