Agilent Technologies 1100 Series Manual de instrucciones descargar pdf (Pagina 68)

58 1100 Series Capillary LC System Manual

4 Basic System Troubleshooting

EMPV failed to initialize (micro mode only)

Symptoms:

An attempt to pump in the micro mode has resulted in either an EMPV

Initialization Failed error message, or a permanent EMPV Initialization not

ready message.

EMPV failed to initialize: Possible Causes and Suggested Actions

Possible Causes Suggested Actions Notes

The no-flow pressure of the

system is higher than 10 bar.

• Set the flow to zero, and disconnect the blue

flexible capillary going from the damper to the

mixer The system pressure reading should be

close to zero bar.

• If the system pressure reading is higher than 4

bar, call Agilent service, or refer to the Capillary

Pump Reference Manual.

This problem typically causes a

permanent EMPV Initialization not

ready message.

The inlet to the EMPV has

been blocked, or partially

restricted. The EMPV cannot

take in sufficient flow to

deliver the correct flow

output. The EMPV

initialization routine cannot

be done within the required

2-minute period.

• Make sure the solvent channels are well purged.

• Check the EMPV filter. Perform a pump purge at

1000 µl/min using pure water. During the purge,

check system pressure. If pressure is >10 bar,

replace the EMPV filter. If a new filter does not

reduce the pressure, replace the mixer.

• Check the flow path from the damper outlet to

the EMPV inlet for plugs or restrictions.

• Check the EMPV-to-flow sensor capillary for a

total plug or partial restriction. Replace the

capillary, or backflush the capillary with

acetone.

• Replace the EMPV assembly (G1361-60000).

Call Agilent service or refer to the Capillary

Pump Reference Manual.

This problem typically causes an

EMPV Initialization Failed error

message

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Agilent Technologies 1100 Series Manual de instrucciones Pagina 68

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