8 Diagnostic Testing and Troubleshooting
256 July 29, 2013, 715003794 Rev. B
Sample management system troubleshooting:
Symptom Possible cause Corrective action
Compression check
failed
Syringe contains an air
bubble (usually seen at top
or bottom of syringe)
Remove air bubble (see
“Replace the syringe” on
page 205).
Mobile phase not properly
degassed
Degas mobile phase.
Incorrect syringe used for
test or syringe data
incorrectly entered in the
Configuration screen
Install a syringe of the
correct size, consulting the
syringe data in the
Configuration screen (see
“Replace the syringe” on
page 205).
Leaks at tubing
connections
Inspect for leakage at the
connections with a tissue,
and tighten connection
slightly if the tissue is
moistened.
Seal pack failure Adjust the seals (see
“Adjust the seals” on
page 226). Replace the
seal pack (see “Replace the
injector needle and seal
pack” on page 209).
Parameters used for
compression check
unacceptable for solvent
Set the appropriate
parameters, then repeat
the compression check in
the Diagnostics screen.
Valve V3 (waste valve)
faulty
Call Waters Technical
Service.
Leak at seal pack Damaged needle, seal
pack
Replace needle and seal
pack (see “Replace the
injector needle and seal
pack” on page 209).
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