Thermo Scientific TRACE GC Ultra, Руководство по техническому обслуживанию и устранению неисправностей

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Chapter 9
PTV Troubleshooting Maintaining a PTV Injector
Maintenance and Troubleshooting Manual 173
Symptom Diagnosis Remedy
Discrimination of
heavy compounds in
splitless mode
Liner not suitable for the
actual sample Replace the liner with an adequate one.
A lower diameter liner would improve
the sample transfer. Refer to
Clean or
Replace the Liner Operating Sequence
on page 151.
Quartz wool causing
excessive retention of high
molecular compounds Replace the packed liner with a new one
filled will quartz wool.
Replace the packed liner with an empty
one.
Refer to Clean or Replace the Liner
Operating Sequence on page 151.
Discrimination of
volatile compounds in
splitless mode
Initial temperature too high Set
Inject temp
to a lower value.
Liner diameter too small Replace the liner with one of larger
diameter. Refer to
Clean or Replace the
Liner Operating Sequence on page 151.
Volatiles are eliminated
through the purge line Set
Const purge flow?
to
N
, then
set
Stop purge for
to a value
corresponding to
Splitless time
Discrimination of
volatile compounds in
solvent split mode
Initial temperature too high Set
Inject temp
to a lower value.
Injection and evaporation
time are set as to exceed the
time required for the solvent
elimination Set
Inject time
and
Evaporation time
to adequate
values.
Split flow set too high Set
Split flow
to a lower value.
Lack of an adequate quartz
wool packing inside the liner Insert quartz wool in the liner.
Table 9-3. PTV Troubleshooting Table (Continued)