Thermo Scientific Dionex ICS-2000, Руководство оператора

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ICS-2000 Ion Chromatography System
4-20
Doc. 031857-03 4/06
4.9 Nonreproducible Peak Height or Retention Time
•
Column overloading
Dilute the sample (see Section 3.9 ).
•
Liquid leaks
Locate and eliminate the leaks (see Section 4.2 ).
•
Incomplete or imprecise filling of the sample loop
1. Fill the sample loop until excess sample exits the waste line.
2. Inspect the 1-cc syringe (P/N 016388) and replace if damaged.
•
Pump not primed properly
Prime the pump (see Section B.13 ).
4.10 Abnormal Retention Time or Selectivity
•
Incorrect eluent
Check the EGC concentration setting.
•
Contaminated or degraded sample
Take appropriate precautions when preparing and storing samples to prevent
contamination and degradation (see
Section 3.9 ).
•
Contaminated column
1. Clean the column as instructed in the column manual. Column manuals
are included on the Dionex Reference Library CD-ROM (P/N 053891).
2. If cleaning is unsuccessful, replace the column.
4.11 No Cell Response
•
Cell not properly installed
Verify that the cell front cover is flush against the component panel. If
necessary, tighten the two mounting screws. When the cell is correctly
installed and the screws tightened, an electronics connector on the cell plugs
into a receptacle inside the ICS-2000.