I confirmed with Patrick yesterday that the RS232 flow rate for both chillers shows that the chillers are on, and the flow rates are around 3gpm.
The flow rates on the medm are negative, both around -2.5gmp.
Greg's most recent alog 41314 from April 5th says the chiller is running in a small closed loop, and it appears that this is for both TCSX and TCSY chillers.
Patrick went to look, and all 3 TCS chillers are running and all read around 3gpm flow.