Installation and operating manual for WATERFRIEND exclusive MRD-2 Page 18 (44)
You can move the cursor by pressing the arrow keys and
and also use the
and
arrow keys to set the limit. The
maximum and minimum possible values are shown right and
left in the display.
Alarm limit
Press the
OK
key to save the settings.
Setting the upper ORP alarm
There is a setting facility for the required alarm limit value in
the menu.
Procedure:
Press the "MENU" key
Move the cursor (blue backed text) to the line "set ORP" by pressing the keys
or
.
Press the
OK
key.
Move the cursor (blue backed text) to the line "upper alarm" by pressing the keys
or
.
Press the
OK
key.
You can move the cursor by pressing the arrow keys and
and also use the
and
arrow keys to set the limit. The
maximum and minimum possible values are shown right and
left in the display.
Alarm limit
Press the
OK
key to save the settings.
Setting the ORP proportional range
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.
MIN
MAX
800
999
750
750
7,20
800
721
675
D -2%
D +10%
pH
mV
Factory setting: 800mV
Factory setting: 400mV
MIN
MAX
0
800
680
550
The proportional range may only be adjusted by a specialist.
