8 Diagnostic Testing and Troubleshooting
226 July 29, 2013, 715003794 Rev. B
• Confirm that fluid is properly drawn from the needle wash
reservoir.
Adjust the seals
The adjust seals test procedure automatically adjusts and optimizes the
vertical needle port position in the seal of the autoinjector.
Required materials
• Restrictor or union with pin plug (startup kit)
• Methanol, 100%, degassed
Before you run the function, confirm these things:
• The sample management system is purged at least twice.
• The solvent is degassed 100% methanol (or another compatible solvent).
• You removed the column to avoid damaging it with a pressure pulse of
approximately 6894 kPa (69 bar, 1000 psi).
• You installed on the red outlet line a restrictor that generates at least
6894 kPa (69 bar, 1000 psi) of backpressure at < 3.0 mL/min.
Tips:
• To attain sufficient backpressure without a column, you can partially
cap the red line with a union and fitting plug assembly. Collect solvent
runoff in an appropriate waste container.
• High-resistance restrictors (> 13788 kPa (138 bar, 2000 psi) @ 1 mL/min)
can cause this test to take longer, and result in a missing restrictor
error.
To adjust the seals:
1. On the Diagnostics screen, press the Adjust Seals screen key.
2. On the Adjust Seals dialog box, press the Start screen key.
At the end of the test, the screen displays this information:
• Pass or fail status
• Current and previous seal data
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