Thermo Scientific FOCUS GC, Instruction Manual, Page: 144 / 356

Chapter 7
Column
Installation
144 Instruction Manual
a. Make sure that your packed column has been correctly prepared as
described in the
Preparing a Metal Packed Column .
b. Insert the column end to the metal adapter paying attention that the
column end touches the bottom
c. Finger-tighten the column end retaining nut until they start to grip the
column.
d. Tighten the column retaining nut.
CAUTION Overtightening the compression ferrule does not necessarily produce a stronger,
leak-free joint. In fact, very often the reverse is true. Overtightening can cause a leak
in the joint and make it very difficult to reseal that particular joint when changing
columns.
Connecting a Packed Column to the TCD Detector
Materials required:
• metric/imperial retaining nut
• metric/imperial ferrules
• 10 mm or 1/4 inch wrench
• adapter for detector
1. Insert the appropriate adapter into the bottom of the detector base, then push
up the adapter into the detector base as far as possible.
2. Slide the ferrule up to detector base then finger-tighten the adapter retaining
nut until it starts to grip the adapter.
3. Use the wrench to tighten the retaining nut. Use no more pressure than is
necessary to obtain a good seal (1/4 to 1/2 turn).
4. Insert the detector end of the column to the adapter base as far as possible.
5. Slide the ferrule up to adapter base then finger-tighten the column retaining
nut until it starts to grip the column.