User manual

96 1260 Nanoflow Pump User Manual
7 Error Information
Module Error Messages
Pressure Below Lower Limit
The system pressure has fallen below the lower pressure limit.
Pressure Signal Missing
The pressure signal of the damper is missing.
The pressure signal of the damper must be within a specific voltage range. If
the pressure signal is missing, the processor detects a voltage of
approximately -120mV across the damper connector.
Probable cause Suggested actions
1 Solvent bottle empty.
Replenish solvent.
2 Lower pressure limit set too high.
Ensure the lower pressure limit is set to a value
suitable for the analysis.
3 Leak.
• Inspect the pump head, capillaries and
fittings for signs of a leak.
• Purge the module. Run a pressure test to
determine whether the seals or other
module components are defective.
4 Defective main board.
Please contact your Agilent service
representative.
5 Defective active inlet valve (AIV)
Replace AIV cartridge.
6 Defective outlet ball valve (OBV)
Replace OBV.
Probable cause Suggested actions
1 Damper disconnected.
Please contact your Agilent service
representative.
2 Defective damper.
Please contact your Agilent service
representative.