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Figure 8-6 Manual Control Settings - Quick Cleaning
5. Select Through column for the Valve Position option.
6. Select Next for the Pump into Tube # option. By pumping
into a collection tube, the diverter valve is also cleaned of
any residue during this operation.
7. Click the Prime B button to pump 100% Solvent B through
the bypass tube and into the collection tubes.
Note
Pumping solvent B at a moderate flow rate (25 to 45 mL/min) over
time will usually solubilize obstructions. Generally, the
recommended solvent is the highest polarity solvent you have
recently used (solvent B).
8. Monitor the Raw Lamp Energy gauge. As the system
pumps solvent, the raw lamp energy should gradually
improve. Pump solvent for two to five minutes or until the
indicator reaches the far-right of the green range.
When the indicator is in the yellow, the lamp energy and flow
cell are ready for the next run. However, continuing the
cleaning for greater raw lamp energy should reduce the
frequency of flow cell cleaning messages (Figure 8-4).
If after five minutes the indicator is still in the red range,
repeat the cleaning steps using an alternative solvent
(Table 8-1). Or, complete the steps in the Monthly Flow Cell
Cleaning procedure (section 8.5.3).
Section 8 Maintenance
8-9
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