Dionex ICS-3000 - Page 198

ICS-3000 Ion Chromatography System
182 Doc. 065031-04 1/08
• Inoperative eluent proportioning valve (gradient pump only)
The proportioning valve assembly should be replaced. Contact Dionex for
assistance.
• Inoperative check valves
Replace the check valve cartridges (see Section 9.4
).
• Insufficient mixing (gradient pump only)
The static mixer may be dirty or contaminated. Flush with IPA (isopropyl
alcohol). If this does not eliminate the problem, install a new mixer (GM-3,
P/N 042126; GM-4, P/N 049135).
• Eluent is contaminated
1. Clean all eluent reservoirs thoroughly (inside and out) with ASTM Type I
(18 megohm-cm) filtered and deionized water and dry with clean,
particulate-free air. If a reservoir still appears dirty, or if there is a slimy
film on the interior, follow the cleaning instructions in Section 9.2
.
2. Flush the system with ASTM Type I (18 megohm-cm) filtered and
deionized water.
3. Replace all end-line filters (P/N 045987). See Section 4.4
for instructions.
4. Prepare new stock solution.
5. Prepare fresh eluent. To ensure eluent purity, prepare all eluents with
electrochemical-grade chemicals, and ASTM Type I (18 megohm-cm)
filtered and deionized water.
• Problem unrelated to the pump
1. The eluent concentration may be wrong, or the eluent may have been
prepared with impure chemicals/eluents or water. To ensure eluent purity,
prepare all eluents with spectro-grade eluents, reagent-grade chemicals,
and ASTM Type I (or better) filtered and deionized water.
2. The column may be the source of the problem. Refer to the column
manual for troubleshooting assistance. Column manuals are provided on
the Dionex Reference Library CD-ROM (P/N 053891).
3. The injection valve may be the source of the problem. Rebuild the
injection valve (see Section 9.19
).