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Verify that the solvent flowing through the cell is not strongly absorbing in the
wavelength range to be verified. This will be the case, for example, if the cell
is filled with a mixture of 96% hexane and 4% ethyl acetate.
To perform wavelength verification:
1. In the Chromeleon 7 Command window: Click UV, click the Commands tab,
and click the button next to the WavelengthVerTest command.
In the Chromeleon 6.8 Commands dialog box: Click the plus sign next to UV,
click the WavelengthVerTest command, and click Execute.
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The accuracy is verified for the following wavelengths: 360.9, 418.8, and
536.5. The results of the test (pass or fail) are logged in the Audit Trail.
•
Wavelength verification can take up to 2 minutes. During this time, data
acquisition is not possible.
2. If verification fails, perform wavelength calibration:
a. Open the Command window or Commands dialog box.
b. Execute the WavelengthCalibration command.
5.3
Replacing a Deuterium Lamp
NOTE The typical lifetime of a deuterium lamp is 2000 hours.
1. Turn off the pump flow from the Chromeleon 7 ePanel Set or the Chromeleon
6.8 Control panel.
2.
Stop the Chromeleon server.
3. Turn off the Dionex VWD power switch on the rear panel (see
The deuterium lamp emits UV radiation that is harmful to the eyes.
Always turn off the detector power before removing the lamp cover.
La lampe deuterium emettet de rayons ultraviolets, qui sont
dangeroux pour les yeux. Voulez vous etteindre le detecteur avant
d'enlever le couvercle de la lampe.
Die Deuteriumlampe gibt UV-Strahlung ab; diese ist schädlich für die
Augen. Schalten Sie den Detektor immer aus, ehe Sie die Abdeckung
von der Lampe entfernen.
Doc. 065377-01 1/12
5 • Service
Figure
2-5).
65
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