With the compressor was it possible to reduce pressure individually to
the three cooling lines.

TPC was out, rotated 90 degrees (i.e. cards horisontal), GEMs off. 

The plot in
http://www.hep.lu.se/eudet/pictures/fectest/beam201009/temp-201009240900-1400.pdf
show the temperature when changing the pressure:

rough time     pressure
9.40:          power (parts at a time)
9.50:          all FEC powered on, 3.5 bar
10.20:         3.0
10.40:         2.5
11.05:         2.0
11.25:         1.5
11.50:         1.0
12.15:         0.75
12.30:         0.5
12.40:         power off
13.40:         system dismounted