Liquistation CSF48 Maintenance
Endress+Hauser 221
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 green light (item 2) is lit on the capacitance sensor.
Adjust the capacitance sensor as follows:
1. Make sure the dosing chamber is empty.
2. With the screwdriver supplied turn the adjusting screw (item 3) to the right (clockwise)
until the yellow light goes out.
3. Then turn slightly back to the left (counterclockwise) until the yellow light is on again. At
this point the sensor is adjusted to the most sensitive setting.
4. In order to verify the settings perform a manual sampling.
5. 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.
a0015413
Fig. 98: Capacitance sensor adjustment
1Sensor
2 Yellow and green light
3Adjusting screw
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