44
Cleaning
Holders with optical glass panes
7.3.1
Removing the window holder
The holders for the two windows are attached to the falling chute by four
magnets each.
1.
To remove the holders, simply tilt the handle of the holder forwards.
2.
In this way, the magnets are released and the holders can be pulled out.
3.
On reinsertion, the magnetic attraction ensures correct positioning.
7.4
Cleaning the lens of the digital camera
If smearing or fixed dots can be seen on the picture transmitted by the camera,
all components must be checked! If the windows and the lens have been
cleaned, but the soiling is still visible, check the camera by turning it. If the
soiling moves in the turning direction of the camera, the soiling must be on the
glass cover of the sensor.
CAUTION
On no account may the camera lens be put under mechanical
stress during cleaning.
The lens must be cleaned using the lens brush (33) and the optics tissue (25)
located in the accessory case.
7.5
Cleaning the hoses
You can clean stubborn soiling in the hoses of the wet dispersion unit by adding
quartz sand. The feed particle size of the sand used should be between 1 and 2
mm. Sand that is too fine can add to the already existing soiling, sand that is too
coarse can clog the system.
Proceed as follows for cleaning the hoses:
1.
Empty the sample bath.
2.
Remove the hoses on the measuring cell insertion and connect both hoses
with the supplied connector. This creates a new liquid circulation system.
3.
Fill the sample bath with liquid.
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