1
5
12.2 – PROGRAMMING REDOX SET-POINT
From measuring status,
press OK, the program will move to SETPOINT programming.
Press OK again, display will show 650 mV flashing meaning
that it can be adjusted to required set point.
Using – or + buttons.
Once selected required set point,
press OK to confirm.
The pump automatically will move to DOSING DIRECTION menu.
13.0 – SET POINT SETTINGS
13.1 – DOSING FIELD DIRECTION MENU
This menu selects the dosing field direction of dosing pump (above the setpoint or below this value) according to
water acid or alkalin characteristics: to reduce pH value acid must be dosed, direction arrow must point down.
This way dosing pump will be active when pH value is higher than the setpoint previously set.
Viceversa, to increase pH value alkaline chemical must be dosed. This way dosing pump will be active when pH
value is higher than required set-point.
Same procedure for RX and Chlorine measurements: if pump has to reach a certain quantity of oxidant or chlorine,
the direction arrow has to point aloft, vice versa, for a reducent
chemical.
From measuring status,
To select arrow direction,
press – and +
Press OK to confirm.
13.2 – MANUAL ON-OFF DOSING MODE / PROPORTIONAL DOSING MODE MENU
ABOUT DOSING MODES
ON-OFF
: dosing pump will operate with ON-OFF mode and with flow rate selected by the user at max
frequency (chapter 11.5) and will stop once reached required set-point.
PROP : with this mode the pump will dose proportionally to the current measured value and its distance to
selected set-point. The pump starts dosing over set-point (determined by hysteresis), at MAX FREQUENCY
selected after
pressing OK from this menu. Then injections frequency will decrease proportionally until stopping
once reached set-point value.
After selected “direction”, display will show ON-OFF flashing
With – and + it's possible to shift to PROP
Press OK to confirm the selection.
Herefollowing will be described flow rate adjustment setting.
WHAT’S THE HYSTERESIS ? Hysteresis function is featured when working with ON-OFF mode: it’s useful when
there are to many or quick changes around set point value which could damage dosing pump. Increasing
Hysteresis value will activate outputs only when measured value moves away from set point according the required
value. Example: if required and selected pH set-point is 7.2 and hysteresis is set at 0,1, in case of measurement
changes from selected set point, dosing output operations will be activated at 7,1 or 7,3 pH.
13.3 –HYSTERESIS SETTING
Once selected direction of dosing (paragraph 11.1.1), adjust
hysteresis value, meaning the distance from selected Set-point, over
this value the pump will start or stop dosing operations
Pressing OK to enter Hysteresis menu setting
Press – or + to select required hysteresis value (default 0.05 pH)
Press OK to confirm
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