Maintenance - ProMinent DULCOTEST OZE 3-mA-2 ppm Instrucciones De Servicio

9
IMPORTANT
• The sensor is to be regularly serviced to avoid any excess metering
• Observe the valid national regulations for maintenance intervals!
• Do not touch the electrodes or bring into contact with greasy

Maintenance

interval Daily/weekly, depending on application
Maintenance work
Cleaning of diaphragm
IMPORTANT
• Before removing the sensor, switch off downstream control devices
• Depressurise the system before removing the sensor!
• Read the safety notes of the system operator before opening the
Read the sub-chapter "Installing the sensor" of Chapter 5 "Assembly" and
the operating instructions of the in-line probe!
If the diaphragm is contaminated and the sensor cannot be calibrated, try to
gently clean the diaphragm.
First remove the sensor.
Remove loosely adhering deposits
Now, fill the sensor with electrolyte, let the sensor run in and calibrate again
(see Chapter 5 "Assembly", Chapter 7.1 "Running-in period" and Chapter 7.2
"Calibration")
Replacement of diaphragm
If a calibration is not possible even after cleaning or if the diaphragm is
damaged, it has to be replaced (see Chapter 5 "Assembly").
ProMinent ®
Maintenance
caused by a sensor failure!
substances!
Check the reading of the sensor at the control unit using a suitable ozone
measuring tool (e.g. DPD 4).
If required calibrate the sensor again (see Chapter 7.2 "Calibration").
or switch to manual operation. In case of sensor failure, an incorrect
measuring value may be present at the input of the control/measur-
ing unit and result in an uncontrolled metering in a control circuit.
For this purpose, close the shut-off valves upstream and downstream
of the fitting. When removing the sensor, liquid might leak if the
system is pressurised.
DGM/DLG III!
Rinse the diaphragm under a gentle flow of cold water, remove lime
deposits
For this purpose, immerse the diaphragm cap into a 1 % hydrochloric acid
(e.g. over night).
Rinse the diaphragm cap with a lot of water.
Maintenance
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