6
Injectors Advanced Maintenance
Baking-out Contaminants from SSL, SSLBKF, HeS-S/SL, PTV, and PTVBKF Injectors
230
TRACE 1300 and TRACE 1310 Hardware Manual
Thermo Scientific
Baking-out Contaminants from SSL, SSLBKF, HeS-S/SL, PTV, and
PTVBKF Injectors
Perform this operation to bake-out contaminants from SSL, SSLBKF, HeS-S/SL, PTV, and
PTVBKF injectors.
To bake-out contaminants from the injector
1. Put the inlet into
Split
injection mode.
2. Select
Constant Flow
mode and enter the normal operating
Column flow
value.
3. Set
Split flow
to 200 mL/min.
4. Purge the column with carrier flow for at least 10 minutes before heating the oven.
5. If the column is connected to the detector, set the detector 25 °C above normal operating
temperature. If the column is not attached to the detector, cap the detector fitting.
In case of PDD detector, it is strongly recommended disconnecting the column from the
detector.
6. Set the injector temperature to 300 °C or 25 °C above the normal operating temperature
to bake out contaminants from the injector, mostly through the split vent.
7. Set the oven temperature 25 °C above the GC method final oven temperature to bake
contaminants from the column. Do not exceed the column manufacturer’s maximum
temperature limit.
8. Bake-out for 30 minutes or until the detector baseline is free of contamination peaks.
