Agilent 1200 Preparative Pump User Manual 101
Troubleshooting and Diagnostics
6
Leak Test
Maximum Allowed Flow Rate Exceeded for Both Pistons (1
and 2)
Probable cause Suggested actions
1 Wrong solvent. Use Isopropyl alcohol only.
2 Loose or leaky fittings. Ensure all fittings are tight, or exchange
capillary.
3 Contaminated EMPV. Run the EMPV cleaning procedure.
4 Loose pump head screws. Ensure the pump head screws are tight.
5 Large leaks (visible) at the pump inlet/outlet
valves.
Tighten or exchange the pump inlet/outlet
valves.
6 Large leaks (visible) at filters, multi
assembly, capillaries or EMPV.
Ensure the leaky components are installed
tightly. Exchange the component if required. Run
the EMPV cleaning procedure.
7 Leaky pressure sensor. Exchange the multi assembly.
8 Leaking seal or scratched plungers of
channel 1 or channel 2.
Exchange the pump seals in both channels.
Check the plungers for scratches. Exchange if
scratched.
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