Pump Head Missing; Index Limit - Agilent Technologies InfinityLab LC Series User Manual

6 Error Information
Module Error Messages

Pump Head Missing

Error ID: 2202, 2212
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 s, indicated by an increase
in motor current. If the end point is not found within 20 s, the error message is
generated.
Probable cause
1
2

Index Limit

Error ID: 2203, 2213
The time required by the piston to reach the encoder index position was too short
(pump).
During initialization, the first piston is moved to the mechanical stop. After
reaching the mechanical stop, the piston reverses direction until the encoder
index position is reached. If the index position is reached too fast, the error
message is generated.
Probable cause
1
2
Agilent InfinityLab LC Series 1260 Infinity II Isocratic and Quaternary Pumps User Manual
Pump head not installed correctly (screws
not secured, or pump head not seated
correctly).
Broken piston.
Irregular or sticking drive movement.
Defective pump drive assembly.
Suggested actions
Install the pump head correctly. Ensure nothing
(e.g. capillary) is trapped between the pump head
and body.
Exchange the piston.
Suggested actions
Remove the pump head, and examine the seals,
pistons, and internal components for signs of
wear, contamination or damage. Exchange
components as required.
Please contact your Agilent service
representative.
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