Thermo Scientific TRACE GC Ultra Maintenance And Troubleshooting Manual page 209

Replace the Collecting Electrode
10. Place the new collecting electrode into its
housing. Ensure the insert hole is perfectly
vertically aligned with the hole on the cell.
11. Using forceps, reconnect the gold contact pin.
12. Remount the connector holder assembly,
verifying the contact efficiency.
Maintenance and Troubleshooting Manual
Chapter 11
Maintaining a FID
209