Thermo Scientific Dionex ICS-5000, Operator'S Manual

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9 • DC Service
Doc. 065342-06 12/11
389
10. Reinstall the working electrode block and the yoke knob and block.
Fingertighten the yoke knob by turning it a full 360 degrees.
NOTE
It is not possible to overtighten the yoke knob. Once
the knob clicks into place, it does not tighten any fur-
ther. The yoke knob ensures constant pressure is
applied to the cell.
11. Orient the cell assembly with the yoke knob on the left and push the cell
onto its mounting location in the DC compartment.
12. Reconnect the cell’s inlet and outlet lines.
13. Reconnect the electrical cables.
14. Start the pump flow.
15. Wait until the pump pressure has stabilized (30 to 60 seconds) and then
turn on the cell voltage.
9.28.4 Polishing an ED Cell Conventional Working Electrode
These instructions are for conventional (nondisposable) working electrodes
only.
Do not polish disposable electrodes .
When to Polish the Working Electrode
•
Do not polish new conventional working electrodes before
installation.
•
After an electrode has been used for a period of time, a layer of
contamination may build up. When this occurs, the electrode must be
polished.
•
After the working electrode is polished and installed, background signal
and analyte sensitivity require several hours to stabilize. Once stabilized,
do not polish the electrode unless you observe a loss of signal or severe
electrode recession.
Items Needed
•
Polishing kit (P/N 036313) shipped with the electrode. The kit contains
polishing pads (P/N 036321), a bottle of fine polishing compound
(P/N 036318), and a bottle of coarse polishing compound (P/N 036319).