Dionex ICS-3000, Руководство оператора

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8 • DP/SP Troubleshooting
Doc. 065031-04 1/08
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backpressure, replace the component. Replace as many components
as necessary to resume operation at the standard operating
backpressure.
2. As columns age, their backpressure increases. It may be necessary to
compensate for this by increasing the high pressure limit. If the column is
the source of the high backpressure, clean the column. (Refer to the
column manual provided on the Dionex Reference Library CD-ROM
(P/N 053891) for instructions.) If this does not eliminate the problem,
replace the column.
3. Observe a run to see whether the high pressure limit is triggered when
sample is injected; if it is, the injection valve may be causing a blockage
(i.e., the rotor seal or stator may need to be replaced). Contact Dionex for
assistance.
•
Electrical connections incorrectly installed
The electrical cables may not be properly installed. Contact Dionex for
assistance.
NOTE The ICS-3000 Ion Chromatography System electronics
components cannot be serviced by the user.
8.15 DP/SP Liquid Leaks/Leak Alarm
NOTE After eliminating the source of a leak, always dry the
leak sensor thoroughly. If the leak sensor is not dry, it
will remain activated and will continue to report a leak
to the Audit Trail.
•
Defective piston seal
Check the pump heads for leaks. If there is any leakage, tighten the fitting
connections just enough to stop the leak. Dry the components. If the pump
head continues to leak, replace the piston seal (see
Section 9.5 ).
•
Leaking check valve
If the leaking check valve is securely tightened but allows leaks despite this,
the valve is defective. Replace both check valve cartridges (see
Section 9.4 ).