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Maintenance and care
AZURA® Detector DAD 6.1L, DAD 2.1L, MWD 2.1L Instructions, V6700
Cleaning procedure
Process
Steps
1.
For cleaning, the flow cell may need to be rinsed with water be-
forehand. The flow cell must not contain any residues of organic
solvents!
2.
A syringe with Luer Lock adapter is filled with at least 5 ml of the
cleaning solution and connected to the inlet port of the flow cell.
3.
The outlet port of the flow cell is connected to a waste tube and
connected to a waste container.
4.
Slowly and carefully flush the flow cell with the cleaning solution.
5.
Remove the waste tube from the flow cell and close the port with a
hole plug.
6.
Remove the syringe from the inlet port and close it with a hole
plug as well.
7.
Leave the cleaning solution in the flow cell for at least 2 hours. For
a more extensive cleaning, it is recommended to let the cleaning
solution work overnight for at least 12 hours.
8.
After the exposure time, remove the hole plugs, fill a Luer Lock
syringe with at least 5 ml of water and connect it to the inlet port.
Install the waste tube again at the outlet port.
9.
Slowly and carefully flush the flow cell with water.
Then install the flow cell in the system and flush with water for 15
minutes at a flow of 1 ml/min.
10.
Check the light intensity via the diagnostic function. The intensity
at 220 nm should be at least 3500 ADC counts.
11.
If necessary repeat the cleaning steps 2 to 9 and check the light
intensity at 220 nm again.
9.4 Replacing the flow cell
UV light will cause the flow cells to become blind with time (solarization),
making them no longer suitable for use. The manufacturer recommends
replacing the flow cell after about 6000 operating hours.
The capillaries are disconnected.
The device is switched off.
Eye injury
Irritation of retina through UV light. High-energy UV light can leak out
from the flow cell or the fiber optic connectors.
Switch off the detector or the lamps.
Prerequisites
