Thermo Scientific Dionex Easion, Руководство оператора

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5 • Service
Doc. 155028-01 08/20
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5.3 Isolating a Restriction in the Liquid Plumbing
A restriction in the liquid plumbing will cause excessive system backpressure.
1. Begin pumping eluent through the system (including the columns).
2. Follow the Dionex Easion flow schematic (see Figure 5-2 ) to work backward
through the system, beginning at the cell exit. One at a time, loosen each
fitting and observe the pressure. The connection at which the pressure drops
abnormally indicates the point of restriction.
•
If the restriction has caused such high pressure that the system cannot be
operated, you must work forward through the flow schematic, adding
parts one at a time until an abnormal pressure increase (and hence, the
restriction) is found.
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If the restriction is in the tubing or fitting, remove the restriction by back
flushing or by replacing the tubing or fitting.