Installation and operating manual for WATERFRIEND -Chlorine MRD-3 Page 36
Function of the third metering pump (option)
The optional third dosing pump can either be used as flocculation pump or for raising the pH for a
bidirectional control of pH.
Procedure:
Press the
key
1. Select Service functions
2. Press the key
in the key bar
3. Select Configuration of dosage systems
4. Select 3. Pump
5. Select 3
rd
pump disabled or 3
rd
pump for flocculation or 3
rd
pump for pH+.
6. To save the configuration changes, press the Save button and answer the following security prompt
with YES
Factory setting: 3rd pump disabled
Bidirectional control for pH (pH+ and pH-)
If the third pump is configured for the function raise pH to implement a
bidirectional control of the pH value, the setting menu for the parameters
of the pH control is extended:
•
The values for the proportional range and the pump output can
be set separately for both pumps.
•
You can specify a dead band for the pH+ pump, in which neither
of the two metering pumps is active
Touchscreen calibration
This feature allows the touch screen of the controller to be calibrated.
Procedure:
Press the
key
1. Select Service functions
2. Press the key
in the key bar
3. Press the key
in the key bar once again
4. Select Touchscreen calibration and follow the instructions on the screen