Troubleshooting The Fpd - Thermo Scientific TRACE GC Ultra Maintenance And Troubleshooting Manual

Chapter 14
Maintaining a Flame Photometric Detector

Troubleshooting the FPD

Symptom
High standing current
and noise
No standing current
Unstable and
excessively noisy
baseline
FPD temperature does
not reach the set point
312
Table 14-5. FPD troubleshooting table
Diagnosis
Detector conditioning not
completed
Air flow rate set too high
Detector not light-tight
lnterferential filter missing
Signal or power cables
incorrectly connected
Faulty photomultiplier tube
Faulty photomultiplier tube
Power cable not properly
connected
Faulty heater
Remedy
Increase detector conditioning time
Reduce air flow rate
Tighten the chimney cap and the
knurled nut that fixes the
photomultiplier tube
Check the interferential filter has been
correctly installed
Check connections
Contact your customer support
organization.
Refer to Appendix B,
Communication, for contact
information.
Contact your customer support
organization.
Refer to Appendix B,
Communication, for contact
information.
Check cable connection
Contact your customer support
organization.
Refer to Appendix B,
Communication, for contact
information.
Maintenance and Troubleshooting Manual
FPD Troubleshooting
Customer
Customer
Customer