Agilent 1200 Preparative Pump User Manual 95
Troubleshooting and Diagnostics
6
Pressure Test
Positioning the Blank Nut
If a specific component is suspected of causing a system leak, place the blank 
nut immediately before the suspected component, then run the pressure test 
again. If the test passes, the defective component is located after the blank nut. 
Confirm the diagnosis by placing the blank nut immediately after the 
suspected component. The diagnosis is confirmed if the test fails.