Thermo Scientific EASY-nLC 1200 Troubleshooting And Maintenance Manual page 226

7
Troubleshooting
Troubleshooting the Results of the System Leak Test
Locating a Leak Between Flow Sensor B and the Mixing Tee
Figure 160. Workflow for locating a leak between flow sensor B and the mixing Tee
Redo the nanoViper connection to the outlet of flow sensor B
The system plumbing now matches that for a system leak test (see
Then, plug the free end of the solvent line with a leak test union and a Viper fitting
Reconnect all of the solvent
lines. Then, rerun the system
leak test (page 178).
Install a new solvent line between the flow sensor B outlet and the mixing Tee inlet
204 EASY-nLC 1200 Troubleshooting & Maintenance Guide
v. Stop the Analytical Column Equilibration script.
vi. Reconnect all of the solvent lines.
vii. Rerun the system leak test (see
page 178).
By following the workflow in
you determined that the leaking connection is between the flow sensor B outlet and the
mixing Tee inlet. The system plumbing is set up as shown in
the solvent channel B disconnected from the mixing Tee inlet.
Follow the workflow in Figure 160
the leak.
You determined that the leak is in the solvent path between the
outlet of flow sensor B and the inlet of the mixing Tee.
Remove the Viper blind plug from the solvent B channel inlet of the mixing Tee.
Reconnect the solvent line to the solvent B channel inlet of the mixing Tee.
No
Done
Disconnect the solvent line from the outlet of flow sensor B.
No
Rerun the system leak test
❖ To locate a leak between flow sensor B and the mixing Tee
1. To ensure leak-tight connections for the solvent line that connects the outlet of flow
"Running a System Leak Test"
Figure 155 on page 197
or the procedure on pages
(step 1
Readback
for flow sensor A
> 100 nL/min
Yes
Readback
for flow sensor A
> 100 nL/min
Yes
(page 178).
or the procedure on pages 198–201,
Figure 157 on page
204–206 to locate and remedy
on page 204).
Figure 32 on page 45).
(step 2 on page 205).
(step 2d on page 206).
on
201, with
Thermo Scientific