39
Maintenance and care
AZURA® Detector UVD 2.1S Instructions, V6820
8.5.2 Cleaning the light guide of a preparative flow cell
The preparative flow cells have a rod shaped light guide instead of the
concave lens of the analytical cells.
Flow cell is removed from the detector.
Tweezers
Allen screwdriver, size 3
Legend
1
Threaded ring
2
Cover
3
Spacer
4
Compression
bushing
5
Light guide with
seal ring
Fig. 26:
Preparative flow cell
Procedure
Process
1.
Using the allen screwdriver, loosen the threaded ring
1
.
2.
Remove the cover
2
and the spacer
3
(not part of all flow cells).
3.
Using tweezers, pull out the compression bushing
4
and the light-
guide
5
.
4.
Carefully push the light guide out of the holder and strip off the
seal. The seal ring needs to be renewed during every cleaning of
the fiber optics.
5.
Clean the light guide with a clean, soft cloth or with an appropriate
solvent in an ultrasonic bath. Make sure that the clean light guide is
not touched by fingers.
6.
Assemble the flow cell. Make sure that the new seal ring does not
interrupt the light path.
7.
Using the allen screwdriver, tighten the threaded ring
1
.
The flow cell lens is clean.
Note:
If the cleaning of the lens does not have the desired effect, the
lens has to be replaced.
Mount the flow cell onto the detector.
Prerequisite
Tools
1 2
4
3
5
Result
Next steps
