The chiller of the neovan electronics stopped working at around 14:00 utc. Probably due to normal device aging.

This afternoon we exchanged the chiller with the spare that was in the optics lab. The serial number of the old chiller is on the pictures attached to this post.

PS: In the chiller water tank, we found some 'sand' which is probably some metal oxide and particle coming from the electronic devices and tubing.