Thermo Scientific TRACE GC Ultra Maintenance And Troubleshooting Manual page 359

Clean or Replace the Collecting Electrode (NPD on ECD)
10. Disconnect the signal, excitation and heater
cables from the ECD detector
11. Remove the heat shield.
12. Remove the heater from the top of the ECD
detector loosening the Allen fixing screw. Use a
3 mm Allen wrench.
Maintenance and Troubleshooting Manual
Maintaining Detectors in Stack Configuration
Chapter 17
359