Troubleshooting 10
Installation, Operation, and Maintenance 175
Part 3, Maintenance and Troubleshooting
Correcting Syringe Problems
Several things can cause syringe needles to bend. When you find one, check for
the following conditions before installing a replacement.
✔ Was the syringe installed properly in the syringe carriage?
✔ Are you using the correct syringe? Is the combined length of the syringe
barrel and needle about 126.5 mm? For more information, see “Syringes” on
page 100.
✔ Are the needle support and needle guide cone clean? Remove any residue or
septum deposits. For more information, see “Periodic Maintenance” on
page 138.
✔ Is the correct insert for your syringe installed in the cool on-column inlet?
For more information, see “Cool On-Column Injection” on page 183.
✔ Is the GC septum nut too tight? For more information, see your GC
operating documentation.
✔ Is the septum of the crimp cap centered over the sample vial? For more
information, see “Capping sample vials” on page 113.
✔ Are the inside diameters of the sample vial, microvial insert, and vial cap
septum at least 5 mm? For more information, see “Preparing Sample
Vials” on page 110.
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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