jason.oberling@LIGO.ORG - posted 10:14, Tuesday 26 September 2017 (38786)
PSL Weekly FAMIS Tasks (FAMIS 3669 & 8441)
Since the HPO is still running, regular HPO maintenance must still be performed regardless of the ongoing vent. Therefore, today I completed the weekly PSL FAMIS tasks.
HPO Pump Diode Current Adjust (FAMIS 8441)
After 3 weeks of no adjustment due to the NPRO swap in the 35W FE, I adjusted the operating current and temperature of the HPO diode boxes; the changes are summarized in the below tables. All work was done with the ISS OFF; a screenshot of the PSL Beckhoff main screen is attached for future reference.
| Operating Currents (A) | ||
| Old | New | |
| DB1 | 50.2 | 50.4 |
| DB2 | 52.8 | 52.9 |
| DB3 | 52.8 | 52.9 |
| DB4 | 52.8 | 52.9 |
| Operating Temperatures (°C) | ||||||||
| DB1 | DB2 | DB3 | DB4 | |||||
| Old | New | Old | New | Old | New | Old | New | |
| D1 | 28.0 | 27.5 | 19.5 | 19.5 | 21.0 | 21.0 | 23.0 | 22.0 |
| D2 | 28.0 | 27.5 | 19.0 | 19.0 | 25.0 | 25.0 | 20.5 | 19.5 |
| D3 | 28.0 | 27.5 | 20.0 | 20.0 | 25.0 | 25.0 | 22.0 | 21.0 |
| D4 | 28.0 | 27.5 | 18.0 | 18.0 | 22.0 | 22.0 | 20.5 | 19.5 |
| D5 | 28.0 | 27.5 | 18.0 | 18.0 | 26.0 | 26.0 | 22.5 | 21.5 |
| D6 | 28.0 | 27.5 | 18.5 | 18.5 | 20.5 | 20.5 | 22.5 | 21.5 |
| D7 | 28.0 | 27.5 | 19.0 | 19.0 | 21.5 | 21.5 | 22.5 | 21.5 |
The ISS is back ON and the HPO is outputting 153.0 W. This completes FAMIS 8441.
PSL Power Watchdog Reset (FAMIS 3669)
I reset both PSL power watchdogs at 16:55 UTC (9:55 PDT). This completes FAMIS 3669.
Images attached to this report
