GRANUDOS S5, control unit
Index: 02
Date modified: 11/05/2021
OI No.: BA SW 014-02 Granudos S5-Steuereinheit EN.docx
Page 16 of 29
Maximum achievable dosing performance, depending on the dosing pump’s hose diameter.
Hose kit - hose diameter
maximum dosing performance*
0.8mm
100 ml/h
1.6mm
400 ml/h
3.2mm
1200 ml/h
4.8mm
2400 ml/h
* The specified values are the maximum dosing performance of the GRANUDOS; this represents 25% of the
pump’s permanent dosing performance. These are approximate /- 10% - depending on the condition
of the peristaltic pump.
Main menu
Settings
Control (password entry)
Control via external measuring and control technology
CORROSIVE!
The measuring and control technology must not switch the GRANUDOS deviec under
any circumstances, but only the dosing unit – see wiring diagram. Any necessary
shutdown of the machine must not take place during the dosing. The dosing cycle must
always be able to run unimpeded. Otherwise, a chemical back-up could occur when
flushing the chlorine granulate, resulting in chlorine gas formation.
This setting determines the control mode of the chlorine and acid dosing and can only
be executed by entering the password.
Control PWM = Pulse width modulation (standard)
The controller output is organised in cycles. The control signals come with 230 VAC or potential-free. After
capturing the input signal, the GRANUDOS doses for chlorine or acid using the set performance. If the input
signal is pending for a longer time than the set cycle duration, another dosing is carried out in the following
cycle.
Notice!
The shortest signal duration should not be less than 2 seconds.
Explanation about the operation with an external acid dosing pump for regulating the pH
value; only possible with PWM control
If an (existing) external dosing pump is to be operated for regulating the pH value, it must be considered that
the acid dosing in the GRANUDOS must also always be active in order to avoid deposits in the dissolving
system.
For this purpose, the acid control can be clamped parallel on the chlorine control (electric wire bridge).
With 230V control: on SL3 clamp 1+3, plus bypass 2+4.
With potential-free control: on SL8 clamp 1+3, plus bypass 2+4.
Thus, during each chlorine dosing the acid dosing is activated as well. For the required cleaning function, the
dosing performance for acid dosing must be set to a low value. However, it must be checked whether the set
dosing performance is sufficient for the cleaning; the mixing cyclone must not get cloudy. See also
Chapter
6.3.1.1, page 11, Example for setting the dosing performance.
Tip!
It is urgently recommended in this case to also connect the pH control at the
GRANUDOS in parallel to avoid acid overdosing in the event of a fault in the chlorine
dosing.
Notice!
As a rule, the pH value in the pool is set with the acid dosing at the GRANUDOS.
