Thermo Scientific Dionex, Operator'S Manual

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7 • Startup, Operation, and Shutdown
Doc. 065250-06 03/2020
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The detector cell is on and the suppressor (if used) is powered.
•
The post-column flow rate is correct. Adjust the flow rate, if
necessary.
•
Check the dilution vessel for liquid. If the vessel contains liquid,
follow these steps to drain the vessel:
1. Verify that the
DV
(
SV6
) valve is off.
2. Turn on the
GAS
(
SV8
) valve for 1 to 3 minutes.
•
Let each system stabilize for 20 to 30 minutes. Verify that the
detector background has stabilized before beginning the analysis.
7.3.2 Routine Operation
After each system has stabilized and the sequence has been started, use
the following checklist to monitor operation.
1. Check for alarms and errors. If necessary, see Chapter 9 for
troubleshooting assistance.
2. Check for any liquid or gas leaks. Isolate and eliminate any leaks.
3. Check fluid levels for all mobile phases, standards, and reagents.
Replenish them as needed.
4. Use a check standard in the sequence to monitor system performance.
7.4 Shutdown
7.4.1 Short-Term Shutdown
Follow these steps to shut down the Dionex Integral analyzer for up to
two weeks.
1. In Chromeleon 7 PA, select the analyzer to be shut down.
2. Place the selected analyzer in the standby state.
Always turn on the flow to the suppressor (from the analytical pump)
before turning on the detector. Operating the suppressor with no flow
going to it will damage the suppressor.