Agilent 1200 Preparative Pump User Manual 99
Troubleshooting and Diagnostics
6
Leak Test
Running the Leak Test
1 Select the leak test from the test selection menu.
2 Start the test and follow the instructions.
When • When problems with leaks are suspected, or after maintenance of flow-path components (e.g.,
pump seals, filters, EMPV or capillaries) to prove pressure tightness up to 350 bar
Tools required • ¼ inch” wrench.
Parts required # Part number Description
1 01080-83202 Blank nut
500 ml Isopropanol
Preparations • Thoroughly flush the pump with isopropanol and remove all contaminations and potential air
bubbles, release the pressure in the system and position the blank nut,
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 pump! Any trace of other
solvents or the smallest air bubble inside the flow path definitely will cause the test to fail!
It is recommended to run the EMPV cleaning procedure (see “Prep Pump EMPV Cleaning
Description” on page 103) prior to running the Leak test, to remove any potential deposits
from the EMPV valve.
Detailed instructions are provided in the LMD Tool.
“Evaluating the Results” on page 100 describes the evaluation and interpretation of the
leak test results.
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