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Troubleshooting and Test Functions
Running the Pressure Test
Running the Pressure Test
Running the test from the ChemStation
1 Select the pressure 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 slope and plateau are evaluated automatically. “Evaluating the Results”
on page 86 describes the evaluation and interpretation of the pressure test
results.
Running the test from the Control Module
1 Place a bottle of LC-grade isopropyl alcohol in channel D.
2 Block column compartment outlet (or the outlet of the last module before the
detector) with a blank nut (01080-83202), See “Positioning the blank nut” on
page 83.
3 Open the purge valve. Set flow for channel D to 5 ml/min and flush the
degasser for about 10 minutes.
4 Set flow to 0 ml/min. Leave the purge valve open.
5 Connect the signal cable to the analog output at the rear of the pump module
(only if an integrator is used).
6 Press Execute to initialize the pressure test.
Tools required
¼-inch” wrench
Parts and materials
required
Blank nut, 01080-83202
Isopropanol, 500 ml