135
Agilent 7683B Automatic Liquid Sampler
Installation, Operation and Maintenance
Agilent Technologies
Part 3:
Maintenance and Troubleshooting
Maintenance 137
Periodic Maintenance 138
Adapting For Cool On-Column Injection 139
Installing a Syringe 141
Removing a Syringe 144
Replacing Syringe Needles 145
Changing the Turret 147
Align Mode 150
Replacing the Needle Support Assembly on the G2913A Injector 153
Replacing the Needle Guide in the Needle Support Foot 157
Replacing Power Fuses in the G2912A ALS Controller 158
Faults and Errors 159
Faults 160
Error Messages 162
Troubleshooting 167
Symptom: Variability 168
Symptom: Contamination or Ghost Peaks 170
Symptom: Smaller or Larger Peaks Than Expected 171
Symptom: Sample Carryover 173
Symptom: No Signal/No Peaks 174
Correcting Syringe Problems 175
Correcting Sample Vial Delivery Problems 176
Special Topics 177
Controlling Sample Vial Temperatures 178
Cool On-Column Injection 183
Suggestions for Packed Inlets with 530-µm Columns 184