Thermo Scientific TRACE GC Ultra Maintenance And Troubleshooting Manual page 183

Performing a Leak Check (Capillary Column)
6. In Check at press line set the pressure (pressurization value) at which the
7. In Sensitivity line set the maximum value the pressure can drop during the
8. Press CLEAR to exit Leak Check Settings menu and return to the previous
9. Select the
NOTE To abort Leak Check, press STOP. A relevant message will be displayed.
10. The system is pressurized for one minute, then the pressure value of the
Maintenance and Troubleshooting Manual
leak check must be performed. The range is comprised from 10 to 999 kPa 
(1.45-145 psi).
test. The range is comprised from 1 to 10 kPa (0.145-1.45 psi).
menu.
Start leak check
Leak Check settings
Start leak check
purge valves of the selected channel are automatically closed and the channel
is pressurized with carrier gas to the leak check set point.
Pressure
Elapsed time
Use <STOP> to abort
carrier is automatically set to Off. The system monitories the pressure for one
minute. During this time, if the pressure does not drop more than the
Sensitivity value set, the message Leak check passed is displayed.
If not, the message Leak detected is displayed indicating possible leaks in the
system.
L. COL. LEAK CHECK
command to start the operation. The split and
CHECKING L COLUMN
R/L.LEAK CHECK
COMPLETED
SUCCESSFULLY
Leak check passed.
Ensuring Tightness
(200)
0.90
Chapter 10
183