M
AINTENANCE
1079 Injector
CP-3800 GC Getting Started Manual
59
WA R N IN G :
FIR E H A ZA R D
Use proper eye and skin protection. Methanol and acetone are toxic and
flammable chemicals. Exercise appropriate precautions when these
chemicals are used.
4. Remove the injector nut, septum, and septum support, with ferrule and
insert attached.
5. Moisten a cotton swab an a stick with methanol and gently swab center of
the injector body.
6. Moisten a cotton swab on a stick with iso-octane and gently swab the
center of the injector body.
7. Examine the end of the fused silica column to ensure that it has not been
damaged. Slide the end of the fused silica column into the opening of the
injector.
8. Gently twist the column nut in the opposite direction used to tighten the
nut. Place the column nut on the end of the injector and tighten the nut.
This procedure minimizes twisting the column.
9. Use the 5/16
″
open-end wrench and tighten with 1/6-turn to secure the
column in place.
10. Replace the septum support, insert, ferrule, septum, and injector nut.
11. To check whether the injector is leak-tight, connect a flow meter to the
split vent. Set the Relay to the split mode. If the flow meter indicates a
flow less than previously measured, the injector has a leak.
12. Turn the column oven back on by pressing the “TURN OVEN ON”
softkey in the column oven section of the method.
