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Troubleshooting
AZURA® Detector DAD 6.1L, DAD 2.1L, MWD 2.1L Instructions, V6700
8.2 Possible problems and solutions
Problem
Solution
Baseline drift
Maintain constant temperature conditions
during the measurement.
Device cannot be swit-
ched on
Inspect the power cable to ensure that it is
plugged into the power sup ply.
Device cannot be
calibra ted
1.
Insert the test cell.
2.
Inspect the calibration with a weak absor-
bing eluent.
Baseline noise
1.
Inspect the flow-cell assembly.
2.
Exchange the defective flow cell.
3.
Inspect the service life of the lamp on the
display.
4.
Reduce the air in the flow cell by using a
degasser.
The relationship of the
signal to the light path
reference is very low
1.
Flush the flow cell.
2.
Replace the lamps
Low UV light
Clean fiber optic ends with alcohol and cot-
ton bud.
Install the maintenance software (Service Tool).
Save device information and send to manufacturer.
Inform the Technical Support of KNAUER.
Further measures
