Help for this level how to cross the generator and then where to go

just kill all the guards and then in the chemical room go through the door towards where you get charm then use telekenisis on the fans afetr killing the guard, go into the room and up to the top (hopefully you've turned the cameras off so you won't be seen) then use telekenisis on a muchine to the right through the window, go through the vent in the chemical room (it's on your left as you come out of the corridor) and climb onto the conveyor belt, follow it around 'till you come to a room with a guard (or a doctor I can't remember) kill him if you want then duck under a table on the right and go through a ven to end up in patient records, use a computer to finish the level