Endress+Hauser Liquistation CSF34, Operating Instructions Manual, Page: 179 / 210

Liquistation CSF34 Maintenance
Hauser 179
4. Reinstall the parts in reverse order. Make sure that the contacts of the conductivity
sensors are in the correct position.
5. Check that the dosing tube is set correctly by performing manual sampling.
Capacitance sensor
(Only for version with vacuum pump)
The capacitance sensor has already been preset at the factory for water. Only adjust
the sensor if the switching sensitivity needs to be changed. This is the case if the
sample covers more than 30% of the sensor (item 1). A yellow and a green light (item
2) is lit on the capacitance sensor.
Adjustment
Adjust the capacitance sensor as follows:
1 2 3
A0015413
 76 Capacitance sensor adjustment
1 Sensor
2 Yellow and green light
3 Adjusting screw
1. Make sure the measuring jug is empty.
2. Turn back slightly to the left (counterclockwise) until the yellow light is on again. At
this point the sensor is adjusted to the most sensitive setting.
3. Perform a manual sampling in order to verify the setting.
4. If this setting is too sensitive (incorrect triggering or the yellow light does not come
back on after sampling), adjust the sensor to a more insensitive setting by turning the
adjusting screw further to the left.
Peristaltic pump sample volume
The sample volume of the peristaltic pump is calibrated at the factory.
In order to calibrate the sample volume, a measurement beaker with a volume of at
least 200 ml is required.