Agilent Technologies 7673 - Chapter 4 Standalone Control; Setting the run parameters; Running the samples; Using two injectors

Contents
iv
Chapter 5 Preventive Maintenance and Troubleshooting
Preventive maintenance ........................................................................................114
Regular basis (before you start a sequence ................................................114
Occasional basis .............................................................................................114
Turret exchange .............................................................................................115
Alignment procedure .....................................................................................116
Troubleshooting .....................................................................................................118
Bent syringe needle ...............................................................................................119
Dropped sample vial ..............................................................................................120
Chromatographic symptoms ................................................................................121
Variability ........................................................................................................121
Contamination or ghost peaks .....................................................................124
Peak area discrimination (smaller or larger peaks than expected) ........126
Sample carryover ...........................................................................................128
No signal/no peaks .........................................................................................129
Fault light symptoms .............................................................................................130
Fault light locations, colors, and patterns ..................................................131
Responding to the fault lights ......................................................................133
Power error .....................................................................................................133
Injector door open/not mounted ..................................................................134
Syringe error ...................................................................................................135
Turret error .....................................................................................................136
Plunger error ..................................................................................................137
Incomplete injection ......................................................................................138
Bottle in gripper .............................................................................................139
Hard tray/injector error .................................................................................140
Align LED is On ..............................................................................................141
Other patterns ................................................................................................142
Error messages ......................................................................................................145
Contacting Agilent Technologies .........................................................................147
Obtaining Agilent Technologies service .....................................................147
Shipment or storage ......................................................................................148