Agilent Technologies 1100 Series Service Manual page 90

2 Troubleshooting and Test Functions
No pressure increase or minimum pressure of plateau 1 not reached
Potential Cause
Pump not running.
Wrong solvent-line connections to solvent
selection valve.
Loose or leaky fittings.
Large leaks (visible) at the pump seals.
Large leaks (visible) at active inlet valve, outlet
valve.
Pressure limit not reached but plateaus horizontal or positive
Potential Cause
Degasser and pump channels A and/or B not
flushed sufficiently (air in the channels).
Wrong solvent.
78
Corrective Action
Check the logbook for error messages.
Ensure the solvent lines from the degasser to
the solvent selection valve are connected
correctly.
Ensure all fittings are tight, or exchange
capillary.
Exchange the pump seals.
Ensure the leaky components are installed
tightly. Exchange the component if required.
Corrective Action
Purge the degasser and pump channels
thoroughly with isopropanol under pressure
(use the restriction capillary).
Install isopropanol. Purge the degasser and
pump channels thoroughly.
1100 Series Nano Pump Service Manual