Basic Cleaning - wtw NiCaVis 705 IQ TS Operating Manual

Maintenance and cleaning
Steps of the basic
cleaning
40

5.2.3 Basic cleaning

1. Take the sensor out of the test sample and remove any solid matter
deposits and incrustation of fouling matter manually with a brush or
sponge.
2. Wash the sensor down with warm tapwater (30 - 50 °C).
Note: Do not use a pressure washer or steam blaster.
3. If the sensor might be contaminated with pathogenic germs it should be
disinfected with a surface disinfectant. This also applies to the cable and
mounting parts.
Note: Follow the instruction manual of the disinfectant (reaction time!).
4. Remove the blind plug or unscrew the compressed air connection from
the sensor.
5. Clean the sensor with soapy water. When doing so, clean the area of
the measuring gap and the compressed air channels very thoroughly.
The compressed air channels can be cleaned with the aid of interdental
brushes and rinsed with soapy water from a wash bottle.
6. Soak the flocked cleaning cards with soapy water and use them to clean
the measuring gap as shown in the following figure. Cut suitable strips
off the cleaning card to clean the bottom of the measuring gap.
Then rinse the sensor with running warm tapwater and finally with a lot
of ultrapure water.
7. Finally wipe the measurement window with a lens tissue.
After completing the cleaning procedure, screw in the blind plug or compressed
air connection.
NiCaVis 705 IQ TS
ba77189e01 05/2017