In the ExoGeni facility there are several claws that feed power that must be terminated to continue the mission. You will come across a control panel for the Shuttle Bay Door Controls. This panel has 5 switches of different pressures:

(5 PSI Valve) (7 PSI Valve) (17 PSI Valve) (11 PSI Valve) (13 PSI Valve)

The objective is to add just enough pressure to fill the gauge between the two arrows. Too much will reset the puzzle and you will have to play with different combinations. Once a correct pressure is reached the bar will turn yellow and text under it will read "WARNING, HIGH PRESSURE". Enter 7, 11, and 13, then activate. This will create enough pressure to break the claw and deactivate the Geth power being flushed into ExoGeni.