Perform main diagnostic tests
July 29, 2013, 715003794 Rev. B 225
Failing result
If the compression check indicates a failing result, perform these actions:
• Verify that the parameters you entered for the test are correct (see
page 97).
• Confirm that the appropriate solvent is used and that the solvent was
properly conditioned.
• Visually check the syringe for bubbles. Confirm that the syringe is
secure.
• Adjust the seals (see “Adjust the seals” on page 226).
• Inspect the sample chamber for dripping.
• Confirm that no leaks appear in the flow path (inspect
compression/ferrule connections, valves, tubing).
• Purge the sample management system (see “Purge the system” on
page 108).
Prime the needle-wash pump
The prime needle-wash pump test procedure automatically primes the
needle-wash system and homes the needle into the stream position. Perform
this procedure if these conditions apply:
• A lack of flow in the needle-wash system
• You are changing the seal-wash solvent
• A needle sensor malfunctions
To prime the needle wash:
1. Ensure that the needle-wash supply line (green) is in the solvent bottle
and that the waste line (yellow) is in an appropriate waste container.
2. On the Diagnostics screen, press the Prime NdlWash screen key.
3. In the Prime Needle Wash dialog box, press the Start screen key to begin
the needle wash.
4. If the solvent does not flow out of the waste line within 30 seconds, press
Start again. If the solvent still does not flow out of the waste line:
• In the sample chamber, inspect for solvent dripping from the
injector.
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