Troubleshooting Table - Agilent Technologies 8355 Sulfur User Manual

Troubleshooting Table

Table 11 Troubleshooting Detector Issues
Problem
Detector problems
No response
No ozone
No Response
Low Response
Wandering Baseline
SCD and NCD User Manual
Possible cause
No ozone
High voltage transformer
and/or ozone generator
inoperative.
Restriction in ozone supply
to the reactor cell.
Broken ceramic or quartz
tube.
Inappropriate hydrogen and
oxidizer flow rates.
Leak in the detector.
Contaminated ceramic or
quartz tubes.
Contamination in one of the
detector gases.
Leak in the oxidizer lines.
Diagnosis
Little or no difference in
output signal between ozone
On and Off.
No difference in output
signal between ozone On
and Off even though flow
through the ozone generator
is normal.
Check flow rates.
If there does not appear to
be a leak, then inspect the
ceramic tube. Contamination
can result from column
bleed, samples which
contain volatile metal
complexes, and large
injections of coke-forming
hydrocarbons.
Check the difference in the
output signal between ozone
On and Off.
Troubleshooting
Corrective action
See "No ozone".
Contact Agilent for service.
Contact Agilent for service.
Replace the ceramic tube.
See "Replace the Inner
Ceramic Tube (SCD)" on
page 73 or "Replace the
Quartz Tube (NCD)" on
page 76.
Adjust flow rates.
Check for leaks in the
detector and repair any
leaks. See "Leaks" on
page 98.
Replace the ceramic tube.
See "Replace the Inner
Ceramic Tube (SCD)" on
page 73 or "Replace the
Quartz Tube (NCD)" on
page 76.
Check inline supply traps
and replace.
Change detector gases.
Check for leaks in the
detector and repair any
leaks. See "Leaks" on
page 98.
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