The lid down operation took place on April 19, 2024.
The system was energized a few minutes ahead of time.
Starting master synchro value: 47401. The master synchro was not jogged prior to starting.
Upon startup at 12:45 pm, the system worked fine and lowered the lid. One stop occurred after lowering a few inches but the system was easily restarted with no modification. No abnormal observations made. The system was stopped at 1:05 pm at a master synchro count value of 12385 to check the tank seal, confirm limit switch functionality, etc., then resumed. The lid was lowered at 1:17 pm.
Overall, it seems that the lowering process was more "smooth" than in past years - the jack stations seemed to be well-synchronized and relatively few motor/brake toggles were required during travel (this is just based on memory and visual observations, not actual data). If this is true, it is likely attributed to the fact that during lid up operation this year, each station was synchronized with respect to each other to help reduce stoppages.
See attached summary.
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