An update on this topic.

We are concluding that the insufficiently low AC voltage was the cause for the spontaneous shutdowns of 2143A.

Since the 1st of this month, the old Prometheus or 2143A has been up and running without a spontaneous shutdown. We have dismantled the temporary setup and put 2143A back on the table to let it serve for the Y arm ALS system today on the 13th (8394).