[Joan-Rene Merou, Alicia Calafat, Sheila Dwyer, Jenne Driggers]

We have entered the LVEA and went to the Beer garden. There, we first turned off the Low Voltage ITM ESD Driver D1600092, first the 15V switch and then the medium voltage switch. In order to turn it on again, it should be reconnected in the opposite order. With the voltage request set to 0 and chassis powered off, we have unplugged the SHV cables going to the chamber and plugged into Robert's ground boxes, which we used to ground to the rack which is grounded to the chamber. This has been done at both drivers (See attached photos).

Afterwards, we have changed the code at /opt/rtcds/userapps/release/isc/h1/guardian/ISC_LOCK.py in order that the LOWNOISE_COIL_DRIVERS will go to LOWNOISE_ESD_ETMY instead of TRANSITION_FROM_ETMX. This has been done by changing lines 6670 and 6674, moving the ", 15" step from line 6670 to 6674. Finally, we communicated the change to the operator and loaded the guardian.