User manual

Bio-inert Quaternary Pump User Manual 89
Error Information
7
Module Error Messages
Servo Restart Failed
The pump motor in the module was unable to move into the correct position
for restarting.
When the module is switched on, the first step is to switch on the C phase of
the variable reluctance motor. The rotor should move to one of the C positions.
The C position is required for the servo to be able to take control of the phase
sequencing with the commutator. If the rotor is unable to move, or if the C
position cannot be reached, the error message is generated.
Pump Head Missing
The pump-head end stop in the pump was not found.
When the pump restarts, the metering drive moves forward to the mechanical
end stop. Normally, the end stop is reached within 20 seconds, indicated by an
increase in motor current. If the end point is not found within 20 seconds, the
error message is generated.
Probable cause Suggested actions
1 Disconnected or defective cable.
Please contact your Agilent service
representative.
2 Blocked active inlet valve.
Exchange the active inlet valve.
3 Mechanical blockage of the module.
Remove the pump-head assembly. Ensure there
is no mechanical blockage of the pump-head
assembly or pump drive assembly.
4 Defective pump drive assembly.
Please contact your Agilent service
representative.
5 Defective main board.
Please contact your Agilent service
representative.
Probable cause Suggested actions
1 Pump head not installed correctly (screws
not secured, or pump head not seated
correctly).
Install the pump head correctly. Ensure nothing
(e.g. capillary) is trapped between the pump
head and body.
2 Broken piston.
Exchange the piston.