Thermo Scientific 074114, Руководство оператора

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Dionex PDA Operator’s Manual
82
Doc. 065378-01 1/12
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Flow cell contains air bubble or old mobile phase
Flush the cell with the mobile phase for the application.
•
Cell not clear
Clean the cell (see Section 5.2 ).
If the detector fails the wavelength calibration again, replace the flow cell
windows (see
Section 5.5 ). Contaminated flow cell windows can significantly
increase baseline noise and cause wavelength calibration to fail.
4.9 Wavelength Verification Fails
•
Detector wavelength requires recalibration
Open the Dionex PDA Wellness panel and run the wavelength calibration
procedure (see
Section 4.14.2 ).
•
No solvent flow through cell
Check the Chromeleon Audit Trail. If the “Not enough light to perform
operation.” message is displayed, flush the cell with deionized water or
methanol until the autozero routine can be performed without error.
•
Lamp(s) needs replacement
Check the number of hours the lamps have been in service:
1. Open the Chromeleon 7 Command window (see page 31 ) or the
Chromeleon 6.8 Commands dialog box (see page 32 ).
2. Select UV , and then select UVLampAge and VisLampAge . If a lamp has
been in service for more than 2000 hours, replace it. See Section 5.7 or
Section 5.8 for instructions on replacing the deuterium lamp or tungsten
lamp, respectively.
•
Solvent absorbs at the wavelength reported for verification
Pump deionized water or methanol through the system during the wavelength
verification test.
•
Filter paddle position error
Check the Chromeleon Audit Trail. If the “Filter wheel sensor could not
detect blocked position.” or “Filter wheel sensor could not detect open
position.” message is displayed, see
page 66 for instructions.