Idegis D-10+, Руководство по эксплуатации

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5.3. INTEGRATED ORP CONTROLLER
The integrated ORP controller is supplied with the following default programming parameters.
SET POINT = 750 mV
IMPORTANT:
1. Before connecting the IDEGIS SYSTEM, check pH, alkalinity, stabiliser
(cyanuric acid) and free chlorine levels are inside the recommended ranges:
pH: 7.2 –7.6.
Alkalinity: 80-150 ppm CaCO .
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Isocyanuric acid : 0 –30 ppm (ideal value: 20-25 ppm).
Free chlorine: 0.5-1.5 ppm
2. If the addition of chemical products to the pool was necessary to level any of these
parameters, disconnect the IDEGIS SYSTEM and leave the pump recirculating
during at least 24 hours to guarantee the perfect dissolution of the added products.
3. The ORP controller uses an ORP (mV) electrode to determine the oxidising power of
the water, in other words, its destruction capacity of organic matter and pathogens. It
should be clearly understood that AN ORP SENSOR DOES NOT MEASURE THE
CONCENTRATION OF RESIDUAL CHLORINE IN THE WATER, BUT ITS CAPACITY
OF TREATMENT. In summary, higher ORP (mV) values bigger disinfection-treatment
grade.
4. If this concept is clear enough, it is easy to understand that two pools with identical
levels of residual chlorine in the water, may present ORP values (mV) very different.
This fact is due to the oxidising power of the chlorine becomes influenced by other
factors, such as pH, stabiliser level (isocyanuric acid), temperature and TDS (total
dissolved solids).
5. A good example to illustrate this point is the fact that in a pool without stabiliser
(isocyanuric acid) we will need half of residual chlorine that in another with 30 ppm of
stabiliser to obtain the same value of ORP (mV). This fact is a consequence of the
chlorine stabilisation process by the isocyanuric acid. This product may be added to
the water to avoid the fast decomposition of the chlorine due to the action of the sun
UV light.
6. In the following table, the behaviour of the ORP value as a function of the variations of
the diverse water parameters implied in the water treatment may be observed.
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