wtw Turb 430IR Mode D'emploi Abrégé page 12

Maintenance, cleaning
Cleaning
Cleaning the cell shaft
Cleaning the cells
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1 Open the battery compartment:
– Unscrew the two screws (1) on the underside of the meter,
– Remove the lid of the battery compartment (2).
2 If necessary, take four old batteries out of the battery
compartment.
3 Insert four batteries (3) in the battery compartment.
4 Close the battery compartment and fix it with the screws.
Occasionally wipe the outside of the meter with a damp, lint-free cloth.
Disinfect the housing with isopropanol as required.
Caution
The housing components are made out of synthetic materials
(polyurethane, ABS and PMMA). Thus, avoid contact with acetone
and similar detergents that contain solvents. Remove any
splashes immediately.
If liquid is in the cell shaft (e.g. due to a spilled cell), clean the cell shaft
as follows:
1 Switch the Turb 430IR off and pull out the power plug.
2 Rinse the cell shaft with distilled water.
Cells have to be clean, dry, and free of fingerprints and scratches.
Therefore, clean them regularly:
1 Clean the cells inside and out with hydrochloric acid or
laboratory soap.
2 Rinse out several times with distilled water.
3 Let them dry in the air.
4 Only hold the cells by the top or by the light protection cap so
that the optical path is not impaired.
5 Before measuring, clean the cell with the enclosed cleaning
cloth.
Note
Scratches in the glass change the optical characteristics of the cell and
falsify the measured value. For this reason, never use scratched cells!
Turb 430 IR
ba75506e01 04/2005