TROUBLESHOOTING
FLOW WAS TOO LOW/HIGH
Descripon
LightLab contains a highly sensitive flow meter that controls the flow and pressure
inside the system to tight tolerances. If the flow is outside of a range and the LightLab is
unable to correct the condition, an error occurs.
Causes and Fixes:
1. The solvent may have run out. Check the solvent level, and if it is empty press
the “replace solvent” button to replace solvent, or access replace solvent from the
settings menu.
2. The injection valve was set to “LOAD” during zero. The valve must always be set
to “RUN’ during zero sequence.
3. Selective Separation Column is not installed. Install the column and re-run the
test
4. The analyzer is too cold or hot, or the warmup sequence was skipped or not
completed correctly. If possible, move the instrument to a conditioned
environment, then turn the device off and back on again, and ensure the warmup
sequence is completed with solvent and fluid lines in place before running a
sample.
5. The connections may be incorrect, loose or damaged. Check to make sure all
fluid connections are tight including the connections at the sample and waste
bottles and the column connections. If a fluid tubing is damaged, extra fluid
tubing is included. To replace, pull out old tubing from the connectors, cut the
new tubing to size and press firmly into the connector barbs.
6. The solvent has become degraded. If the solvent cap is left off for long periods
(>5 minutes) or has become contaminated, the analysis may result in poor fits.
Replace solvent by going to Settings Replace Solvent.
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