WDT Operating instructions GRANUDOS 10 (V61-08/05) page 11 of 20
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a cycle time of 138 seconds –Position 8 at the cycle knob and a corresponding dosing rate of
13 % - position 4 at the dosing time knob.
An outdoor pool needs in good weather conditions about 3-5 times more chemical.
2.
Acid
The consumption of acid is harder to predict as that of chlorine. For the beginning set the
dosing knob similar to chlorine. The actual need has to be found by trial and error. The pH
should be at 7,0 – 7,4.
3.5
Dosing Controlled by Auto-Controller
If an auto-controller is used, set an “E-Programme” – see above and use app. 3-5 times higher
dosing rate as calculated above. It is to adjust both, cycle and dosing time.
If CO2 is used for pH-correction, it is proposed to connect the controller output at the
GRANUDOS in parallel to the CO2 control valve and set a low dosing performance for acid.
So the acid dosing for cleaning is controlled.
Attention!! If an external auto-controller has a solid state relay (transistor) output there can be
an leakage voltage even the controller switches off the dosng. To avoid that the GRANUDOS
input relay is switched by this leakage voltage a resistor 15 kohm, 4,5 w must be fitted in
parallel.
To connect the auto-controller to the GRANUDOS please see the wiring diagram
