User manual

98 1260 Nanoflow Pump User Manual
7 Error Information
Module Error Messages
Missing Pressure Reading
The pressure readings read by the pump ADC (analog-digital converter) are
missing.
The ADC reads the pressure signal of from the damper every 1ms. If the
readings are missing for longer than 10 seconds, the error message is
generated.
Pump Configuration
At switch-on, the pump has recognized a new pump configuration.
The pump is assigned its configuration at the factory. If the active-inlet valve
and pump encoder of channel B are disconnected, and the pump is rebooted,
the error message is generated. However, the pump will function as an
isocratic pump in this configuration. The error message reappears after each
switch-on.
Probable cause Suggested actions
1 Damper disconnected.
Please contact your Agilent service
representative.
2 Defective damper.
Please contact your Agilent service
representative.
3 Defective main board.
Please contact your Agilent service
representative.
Probable cause Suggested actions
1 Active-inlet valve and pump encoder of
channel B disconnected.
Reconnect the active-inlet valve and pump
encoder of channel B.