Thermo Scientific Dionex ICS-2000, Руководство оператора

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ICS-2000 Ion Chromatography System
5-10
Doc. 031857-03 4/06
vacuum degas pressure reading is recorded. When the vacuum degas
assembly is running in monitor mode, this calibration value is used to
determine when to turn on the degas pump.
3. If you are using the Wellness panel, click Log to record the new
calibration value in the Audit Trail.
4. If you performed the calibration from the ICS-2000 touch screen,
record the new calibration values in the Chromeleon Wellness
database. To do this, open the Wellness Panel (see
Section 5.1.1 ) and
click Upload under Update Wellness Database .
5.2 Isolating a Restriction in the Liquid Lines
A restriction in the liquid plumbing will cause excessive system backpressure.
1. Begin pumping eluent through the system (including the columns).
2. Follow the ICS-2000 flow schematics in Figure 5-7 , Figure 5-8 , or Figure 5-9
and work backward through the system, beginning at the suppressor
Regen
Out port. One at a time, loosen each fitting and observe the pressure. The
connection at which the pressure drops abnormally indicates the point of
restriction.
NOTE The numbers on the ICS-2000 flow schematic indicate
the order in which liquid flows through the system
components.
If the restriction has caused such high pressure that the system cannot be
operated, you must work forward through the flow schematics, adding parts
one at a time until an abnormal pressure increase (and hence, the restriction) is
found.
3. If the restriction is in the tubing or fitting, remove the restriction by back
flushing or by replacing the tubing or fitting (see Section 5.3 ).