Troubleshooting Guide; High Background Conductivity - Thermo Scientific Dionex ACRS-ICE 500 Product Manual

4 – Troubleshooting

4. Troubleshooting Guide

The purpose of the Troubleshooting Guide is to help you solve operating problems that may
arise while using the Dionex Anion Chemically Regenerated Suppressor for ICE (Dionex
ACRS-ICE 500). For more information on problems that originate with the Ion Chromatograph
or the specific anion exchange column set in use, refer to the Troubleshooting Guide in the
appropriate Installation Manual. If you cannot solve the problem on your own, contact the
nearest Thermo Scientific Dionex Regional Office (see, "Thermo Scientific Dionex Worldwide
Offices").

4.1 High Background Conductivity

A. Check that the regenerant is flowing from the waste line at the proper flow rate.
B. Check for eluent flow out of the suppressor ELUENT OUT port.
!
Do not disassemble the Dionex ACRS-ICE 500.
WARNING
Thermo Scientific
032661-12
1. If there is no flow from the waste line, disconnect the 0.012" i.d. tubing connected
to the waste line.
If the regenerant lines and the suppressor are filled with regenerant and there are no
restrictions in the regenerant line, the regenerant should flow freely from the 1/8"
o.d. waste line.
If there is no flow, make sure the reservoir cap is tight and that there are no audible
air leaks. Also make sure that the regenerant reservoir is pressurized. If it is
pressurized, trace the regenerant lines backward from the reservoir to find and
remove any blockage.
2. If there is flow from the waste line, but it is less than the desired flow rate, increase
the flow rate by shortening the 0.012" i.d. waste line tubing or by increasing the
reservoir pressure. If the flow rate is correct, go on to the next step.
3. If the regenerant is flowing at the desired rate, either the selected regenerant flow
rate is too slow or the regenerant is too dilute to suppress the eluent concentration
at the set eluent flow rate. Increase the regenerant flow rate or increase the
regenerant concentration. Most applications require 10 mM TBAOH regenerant or
less.
1. If there is no flow out of the Dionex ACRS-ICE 500 ELUENT OUT port, make
sure that eluent is entering the suppressor at the ELUENT IN port. If there is no
flow at this point, trace the eluent flow path backward through the system to find
and remove the blockage.
2. If there is flow into the Dionex ACRS-ICE 500, but not out, and there are no
visible leaks from the side seam of the suppressor, a break in the membrane is
probably allowing eluent to leak into the regenerant. If this is the case, then the
Dionex ACRS-ICE 500 must be replaced.
Product Manual for Dionex Anion Chemically Regenerated
Suppressor for ICE
Page 18 of 22