This morning we swapped the chiller used to cool the Neovan electronics (fig. 1), which is meant to be a spare, with another one, that TCS lent us (fig. 2 and 3). This chiller in fact, had been temporarly plugged on the Neovan amplifier electronics on the 11st of Oct (see entry #65302) but since then we had no spare anymore.

The new chiller seems to work fine (plot 4), eventhough the flow is smaller. The temperature is much better stabilized with this chiller.

We then plugged the spare chiller (the one in fig 1) on the main circuit with the flow reversed in order to eventually unblock small parts which could have been stuck causing the temperature increase of the neovan head in these last weeks. After few minutes we switched on again the usual chiller dedicated to the main circuit (fig 4). The overall effect is a slight decrease of the Neovan head temperature (fig.5).