Installation and operating manual for WATERFRIEND -Chlorine MRD-3 Page 18
•
You used the wrong buffer solutions. It is imperative that pH 4 and pH 7 are used. Calibration is not
possible if other buffer solutions are used.
•
The buffer solutions are used up or contaminated. In this case, use new buffer solutions.
•
The electrode was connected to the wrong transmitter. The pH electrode must be connected to the
black transmitter.
•
The electrical connection between electrode and transmitter, or that between transmitter and
controller, is damaged.
pH power on delay
This setting should only be adjusted by a professional, and is only accessible in Expert Mode.
The controller only starts up after a delay period once the power supply has been provided and once
external enable has been switched on (e.g. filter control unit). This power-on delay is necessary because a
period specific to the overall system elapses once the filter pumps have been switched on before the
completely mixed water reaches the sensors. This mixing process is mainly dependent on the pool size, the
dimensions of the filter pump, the pipe length and the filter itself.
The delay period can, if required, be adapted to the actual pool size.
Procedure:
Press the
key
1. Select pH settings
2. Press the key
in the key bar
3. Select Start delay
The current value is shown on the left side of the display.
To adjust this value, the following two options are available:
a) PLUS / MINUS keys
•
By pressing the arrow keys
or
, the value can be
modified stepwise.
•
Press
to store the new setting.
b) Keyboard
The value can also be set directly by using the keyboard on the
right side of the display:
•
enter the desired value
•
Press
to store the new setting.
Factory setting: 30 minutes
Range: 1 to 120 minutes
Setting the maximum pH metering time
This setting should only be adjusted by a professional, and is only accessible in Expert Mode.
The metering time limit is a safety function and prevents dangerous overdosing in cases of breakdown.
Attention! The higher the maximum dosing time is set, the more acid can be released in an uncontrolled
manner in case of any damage of the dosing tube.
The metering time must be adapted to the actual pool size.
Procedure:
Press the
key
1. Select pH settings
2. Press the key
in the key bar
3. Select Maximum dosage time
The current value is shown on the left side of the display.