Preventive Maintenance and Troubleshooting
Bent syringe needle
119
Bent syringe needle
When you find a bent syringe needle, check:
• Was the syringe installed properly in the syringe carriage?
• Was the syringe needle straight? Roll the syringe on a flat surface and
watch the tip of the needle.
• Are you using the correct syringe? Is the combined length of the syringe
barrel and needle about 126.5 mm? For more information, see “Selecting
and installing syringes” on page 49.
• Does the injection mode parameter match the type of inlet under the
injector module (normal for packed or split/splitless inlets, on-column for
on-column inlets)? For more information, see “Injection mode” on page 63.
• Are the needle support and needle guide cone clean? Remove any residue
or septum deposits.
• Is the GC septum nut too tight? For more information, see “Changing
septa” on page 54.
• Is the septum of the crimp cap centered over the sample vial? For more
information, see “Crimp capping sample vials” on page 30.
• Are the inside diameters of the sample vial, microvial insert and vial cap
septum at least 5 mm? For more information, see “Specifications“in
chapter 2.
WARNING When troubleshooting the injector, keep your hands away from the syringe
needle. The needle is sharp and may contain hazardous chemicals.
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