The teleena surpervisor will press the switch until it reaches default. Bait the janitor (Letting her see you) while the supervisor is distracted and pressing the switch. To time it, let the janitor see you before supervisor gets to the console but not too early when she can see you in the hallway. Leave the button on open door and it will give you extra time before she reaches the hatch close timer. Go between the spaces of the doors to go around the janitor (She will follow you if she is close enough, so don't get too far ahead unless she is trying to predict), then go straight for the hatch.
Hope this helps.