Motor-Drive Power - Agilent Technologies 1260 Infinity User Manual

Motor-Drive Power

The current drawn by the pump motor exceeded the maximum limit.
Blockages in the flow path are usually detected by the pressure sensor in the
damper, which result in the pump switching off when the upper pressure limit
is exceeded. If a blockage occurs before the damper, the pressure increase
cannot be detected by the pressure sensor and the module will continue to
pump. As pressure increases, the pump drive draws more current. When the
current reaches the maximum limit, the module is switched off, and the error
message is generated.
Probable cause
1
2
3
4
5
1260 Nanoflow Pump User Manual
Flow path blockage in front of the damper.
Blocked outlet valve.
High friction (partial mechanical blockage) in
the pump drive assembly.
Defective pump drive assembly.
Defective main board.
Error Information
Module Error Messages
Suggested actions
Ensure the capillaries and frits between the
pump head and damper inlet are free from
blockage.
Exchange the outlet valve.
Remove the pump-head assembly. Ensure there
is no mechanical blockage of the pump-head
assembly or pump drive assembly.
Please contact your Agilent service
representative.
Please contact your Agilent service
representative.
7
101