Directed Electronics G4203P Manual de usuario descargar pdf (Pagina 105)

1260 Nanoflow Pump User Manual 105

Error Information

Module Error Messages

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.

Index Limit

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 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.

Probable cause Suggested actions

1 Irregular or sticking drive movement.

Remove the pump head, and examine the seals,

pistons, and internal components for signs of

wear, contamination or damage. Exchange

components as required.

2 Defective pump drive assembly.

Please contact your Agilent service

representative.

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Directed Electronics G4203P Manual de usuario Pagina 105