8 • Troubleshooting
Doc. 065342-06 12/11
219
•
Inoperative check valves
Replace the check valve cartridges (see
•
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 that meets the
specifications listed in
. 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
.
2. Flush the system with ASTM Type I (18 megohm-cm) filtered and
deionized water that meets the specifications listed in
.
3. Replace all end-line filters (P/N 045987). See
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 that meets the specifications listed in
.
•
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
that meets the specifications listed in
.
2. The column may be the source of the problem. Refer to the column
manual for troubleshooting assistance. Column manuals are provided
on the Thermo Scientific Reference Library DVD (P/N 053891).
3. The injection valve may be the source of the problem. Rebuild the
Summary of Contents for Dionex ICS-5000
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