Thermo Scientific TRACE GC Ultra Maintenance And Troubleshooting Manual page 361

Clean or Replace the Collecting Electrode (NPD on ECD)
18. Reinsert the heater on the top of the ECD
detector and fix it with its Allen screw.
19. Slip the heat shield onto the heater
20. Remount the NPD detector on the top of the
ECD and tighten the fixing screw.
Maintenance and Troubleshooting Manual
Maintaining Detectors in Stack Configuration
Chapter 17
361