Thermo Scientific TRACE GC Ultra Maintenance And Troubleshooting Manual page 176

Chapter 9
Maintaining a PTV Injector
Symptom
Poor reproducibility
of results
Discrimination of
volatile compounds
176
Table 9-4. PTVLV Troubleshooting Table
Diagnosis
Transfer temperature too low
Transfer time too low
Injection speed set too high
Injected volume too large
Initial temperature set too low
Injection pressure set too high
Lack of an adequate quartz
wool packing inside the liner
Injection speed set too low
Initial temperature set too
high
Split flow set too high
Lack of an adequate quartz
wool packing inside the liner
Remedy
Set Transfer temp to a higher
value.
Set transfer time or cleaning
time to a value close to the whole GC
run time.
Reduce injection speed.
Reduce the amount of sample to be
injected.
Set
Inject temperature
higher value.
Set
Inject pressure
value.
Fix the quartz wool packing inside the
liner. Refer to Adjust a Quartz Wool
Packing Operating Sequence on
page 165. Replace the liner with another
filled with quartz wool. 
Refer to Clean or Replace the Liner
Operating Sequence on page 151.
Set to a higher value.
Inject speed
Set
Inject temperature
value.
Lower the split flow.
Fix the quartz wool packing inside the
liner. Refer to Adjust a Quartz Wool
Packing Operating Sequence on
page 165.
Replace the liner with another filled
with quartz wool. 
Refer to Clean or Replace the Liner
Operating Sequence on page 151.
Maintenance and Troubleshooting Manual
PTV Troubleshooting
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