We acted in order to increase by a few degrees the temperature of some electronic rooms inside the CEB, in particular:

• DAQ room: we left on only the fan coil #1 (left side near the desk) at the minimum speed
• DET EE room (DER): we switched off both splitters (there is no way to regulate the speed)
• EER room: we changed the splitter temperature set point from 21 to 25 deg
• IER (piscina): we changed the temperature set point point of both splitters from 22 to 26 deg

These actions were performed between 17:24 and 18:14 UTC. We caused an unlock of the ITF while moving out of the EE room.

We observed the rate of the glitches for 1 hour before the actions and for 2 hours after the actions (Figure 1).

Between the two observation times the temperature of the rooms had increased by a few degrees: DAQ room 3deg, DET EEroom 4deg, EE room 2 deg, IER 0.2 deg

Similar temperature changes are measured by the sensors in the rooms (Figure 1) and by the sensors inside some electronics boards (Figure 2).

The rate of the glitches has not changed in significant way :-( (Figure 1)

Note that the temperature of the IER had a very little change.

We conclude the shift by returning all to the initial condition.