Thermo Scientific TRACE GC Ultra Maintenance And Troubleshooting Manual page 177

PTV Troubleshooting
Symptom
Sample degradation
Symptom
Broadening or loss of
peaks at the end of
the chromatogram
Maintenance and Troubleshooting Manual
Table 9-4. PTVLV Troubleshooting Table (Continued)
Diagnosis
Cathalytic degradation of
sensitive compounds caused
by the quartz wool
Cathalytic degradation of
sensitive compounds caused
by-products accumulated on
the quartz wool
Table 9-5. PTV General Troubleshooting
Diagnosis
Injector temperature too low
Premature cooling of the
injector before the end of the
analysis
Maintaining a PTV Injector
Remedy
Use an empty deactivated liner reducing
the volume injected. Refer to
Replace the Liner Operating Sequence
on page 151.
Replace the packed liner with a new
one. Refer to Clean or Replace the
Liner Operating Sequence on page 151.
Remedy
Increase the injector temperature
Keep the transfer phase up to the end of
the analysis, unless the cleaning phase
is set.
Chapter 9
Clean or
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