Installation and operating manual for WATERFRIEND -Chlorine MRD-3 Page 19
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: 60 minutes
Range: 1 to 300 minutes
Setting the pH proportional range
This setting should only be adjusted by a professional, and is only accessible in Expert Mode.
The controller offers the facility for setting the regulation proportional range in order to adapt the
WATERFRIEND to the requirements of the specific swimming pool. This value influences the delivery
quantity by optimising the pulse-width modulation. This means that the duty cycle is modulated at constant
frequency. The numeric value specifies the regulating conductance. At a deviation of the measured actual
value from the desired value, which is greater than the P range, the metering pump operates with maximum
power. If the actual value approaches the target value inside the proportional range, the metering
performance decreases proportionally. This means that the pump is working at reduced power.
Increasing the p-range leads to a slower approach to the target value
with less overshoot.
Procedure:
Press the
key
1. Select pH settings
2. Press the key
in the key bar
3. Select P-range
The current value is shown on the left side of the display.
