Thermo Scientific FOCUS GC, Instruction Manual, Page: 137 / 356

Chapter 7
Installation Column
Instruction Manual 137
6. Use the 6 mm wrench to tighten the retaining nut. Use no more pressure than
is necessary to obtain a good seal (1/4 to 1/2 turn).
Connecting to a TCD Detector
It is a good practice, before connecting the column to the detector, to perform a
manual leak check as described in the
Manual Checking for Leaks .operating
sequence.
Before you connect the capillary column to the TCD, be sure to do the following:
• condition the column
• make sure the capillary column adapter is mounted on the detector base body
Materials required:
• M4 column retaining nut
• graphite ferrule
• 6 mm wrench
• capillary column adapter
1. Connect the capillary column adapter to the detector base body.
2. Slide the graphite ferrule onto the column with the beveled end facing the
injector. Be careful to avoid damaging the graphite when inserting the
column.
3. Cut 2–3 cm from the column end.
4. Insert the column into the detector adapter and slide the ferrule up to the
detector base body as far as possible.
5. Slide the M4 retaining nut onto the column through its side cut.
6. Finger-tighten the retaining nut until it starts to grip the column.
7. Push the column all the way up into the detector, then pull the column back
about 1 mm.