logbook/robot/script0.cds.ligo-wa.caltech.edu@LIGO.ORG - posted 12:10, Monday 22 May 2017 - last comment - 17:22, Monday 22 May 2017(36313)
CP3, CP4 Autofill 2017_05_22
Starting CP3 fill. TC A error. TC B error. Fill aborted. Starting CP4 fill. LLCV enabled. LLCV set to manual control. LLCV set to 70% open. Fill completed in 2620 seconds. TC B did not register fill. LLCV set back to 36.0% open.
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Dave, Patrick It appears that the temperature of the CP3 thermocouples started above 40 deg C which the script to perform this fill takes as an error. That is, the script takes any reading from the thermocouples above 40 deg C as an indication that the thermocouple is not working correctly. We have created WP 6649 to increase this upper limit.
Thanks!
Increased CP4's manual LLCV %open value from 36% to 37%. Will let new script run before altering CP3's value.
First run of updated script did not complete after an hour: Starting CP3 fill. LLCV enabled. LLCV set to manual control. LLCV set to 50% open. Fill not completed after 3600 seconds. LLCV set back to 21.0% open. Dave is rerunning it.
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Fill completed: Starting CP3 fill. LLCV enabled. LLCV set to manual control. LLCV set to 50% open. Fill completed in 384 seconds. TC B did not register fill. LLCV set back to 21.0% open.
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I looked at CP3's exhaust discharge pressure and am convinced that it did overfill following the second running of the new script. I increased CP3's LLCV %open to 22% up from 21%. It is getting warmer this might be too conservative?