Hydraulic Connections - Zodiac pH expert Manual De Instalación Y De Uso

Unit
CH
(Calcium °f (ppm)
hardness)
Cyanuric acid
mg/L or ppm
(stabiliser)
Metals
mg/L or ppm
(Cu, Fe, Mn...)
2.1.2 Appliance release programme
Example: 4 cycles with a set point at 7.4 pH and acid regulation (standard alkalinity):
• This is inverted of course when a basic dosage is selected.
• Active chlorine is more efficient with the correct pH level.
• Maximum release rate is 1.5 L/h This dosage ensures that is set point is reached quickly and accurately.
• This proportional release is cyclical and cycle duration is 10 mn. The doses will change according to the
distribution of release times and pauses. The proportionality adjusts automatically and the balancing between
the different doses is made using 0.15 pH steps.
2.1.3 Adjusting dosage according to alkalinity
The pH level of water is potentially unstable. Its stability is governed by the level of water alkalinity (also called TA for
''Total alkalinity''). If the TA is low (< 100ppm), the pH will become potentially unstable and conversely if the TA is high
(>150 ppm).
In order to always achieve optimal water balance, the appliance has a feature that allows users to adjust the quantity of
correcting product potentially released depending on the water TA (see § 3.5.4)

2.2 Hydraulic connections

2.2.1 Sensor location
• The pH sensor must be placed after the filter and before the heating system,
• It must be placed vertically or sloping at a maximum of 45°, it should never point downwards.
H0434900.A - EN - 2013-11
Recommended
To increase
values
10 – 30 Add calcium
(100 – 300) chloride
< 30
± 0
• pH ≥ 7,55: 20% injection (2 mn) & 80% pause (8 mn)
• pH ≥ 7,7: 50% injection (5 mn) & 50 % pause (5 mn)
• pH ≥ 7,85: 75% injection (7 mn 30 s) & 25% pause (2 mn 30 s)
• pH < 7,9: 100% injection (10 mn)
To lower
Add a scale sequestering
agent (Calci-) or run a
decarbonation
Partially empty the pool
/
then refill it
Add metal sequestering
/
agent (Metal Free)
Test frequency
(during the season)
Monthly
Quarterly
Quarterly
EN
4