Nah the password for it is in the forest. Although, I really need to redo those machines and the story behind them. They were some of the first events I made so they are a tad wonky.
The machines have no requirements apart from unlocking the control panel.
Woops got my codes confused. So the mentalitiser code is in the cave where the sewer entrance is. Check the weirdly placed bush in the middle of the room.... :D