Cleaning - HP 5890 Series II Plus Reference Manual

Preventive Maintenance
Packed column inlet
Figure 8-3
Packed Column Inlet, Leak-Checking the Septum

Cleaning

Turn off the heated zone for the inlet and allow it to cool.
Remove the septum retainer nut and septum; remove also the column
and inlet liner. Using a suitable light source, illuminate the inside of the
inlet from inside the oven while looking through the inlet from the top. If
there is evidence of contamination or deposits, the inlet should be
cleaned.
Use a swab and an appropriate solvent to scrub interior walls until
deposits are removed. A suitable wire may be used to dislodge solid
particles carefully. Dry thoroughly with compressed, filtered, dry air or
N before reassembling.
To avoid possible eye injury, wear eye protection when using
WARNING
compressed gas.
162