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Running the Leak Test
Tools required
¼ inch” wrench.
Running the test from the ChemStation
1 Select the leak test from the test selection box in the Diagnosis screen.
2 Start the test and follow the instructions.
NOTE Make absolutely sure that all parts of the flow path that are part of the
test are very thoroughly flushed with IPA before starting to pressurize
the system! Any trace of other solvents or the smallest air bubble
inside the flow path definitely will cause the test to fail!
The slopes and plateaus are evaluated automatically. “Evaluating the Results”
on page 92 describes the evaluation and interpretation of the leak test results.
Running the test from the Control Module
1 Place a bottle of LC-grade isopropyl alcohol in channel D.
2 Open the purge valve.
3 Set flow to 5 ml/min for channel D and flush the degasser channel for about
10minutes.
4 Turn off pump operation and close the purge valve.
5 Connect the restriction capillary (G1313-87305) to pump outlet.
The next steps are necessary to wear in new seals.
6 Set flow to 5 ml/min and flush the pump channel for about 3 minutes.
7 Set flow to 0 ml/min and replace the restriction capillary with blank nut
(01080-83202).
8 Open the purge valve.
Parts and materials
required
Restriction Capillary ,G1313-87305
Blank nut, 01080-83202
Isopropanol, 500 ml