Replace the Silver Seal (NPD on ECD)
13. Remount the detector on its base body,
tightening the fixing nut with the proper tool.
14. Reconnect the signal, excitation and heater
cables to the ECD detector.
15. Reconnect the signal and ignition polarization
cables to the NPD
Maintenance and Troubleshooting Manual
Maintaining Detectors in Stack Configuration
Chapter 17
379