you need to:
1. enter the vent to the right of the Technician
2. walk to the top and turn the vertical device until it's full blue to remove the purple gas on the left
3. enter the vent to the left of the Technician
4. break the power device and avoid the Teleena Crawler
5. now that the Technician is distracted by the sudden malfunction, you can turn the device in the main area to blue to remove the purple gas below you and escape