Technical instructions
ZELIA ZLT
9
6. Commissioning
Only regular analysis enables the device configuration to be adapted.
Carefully follow the stages below for the start-up process to run smoothly.
The chemical products used in pools are highly corrosive and can adversely
affect your health and the environment.
These products should be handled with care and stored in suitable rooms.
6.1. Stabilizing agent
Chlorine is a gas at ambient temperature. Its solid form (tablets, granules, etc.) is obtained by asso-
ciation with a cyanuric acid molecule. This cyanuric acid acts as a stabilizing agent as it protects
the chlorine from the damaging UV rays of the sun. On the other hand, this cyanuric acid is not
consumed and amasses inexorably in pools treated with chlorine tablets and ends up inhibiting the
potential of the chlorine. For public pools, the maximum concentration of cyanuric acid is set at
80 ppm (or mg/l). The treatment of salt by electrolysis prevents this overdosing of cyanuric acid;
however, it may be useful to add between 25 and 50 ppm (or mg/l) of stabilizing agent when the
pool is highly exposed to the sun and when the chlorine concentration is insufficient. Indeed, in
very sunny conditions, 90% of the free chlorine is destroyed in two to three hours in the absence of
cyanuric acid while this proportion falls to 15% with 30 ppm of stabilizing agent (cyanuric acid).
6.2. Controlling the salt rate
ZLT
is designed to operate with a water conductivity that corresponds to a concentration of salt
between 1.5g/l and 4g/l at 25°C.
To accurately control the salt rate of your pool, we recommend that you use a conductivity tester.
This instrument is very easy to use and provides a direct reading of the salt rate in g/l. There are also
analysis tabs which can effectively control the salt concentration of your water.
When the salinity is unsuitable,
ZLT
suspends production in the event of too much or too little salt.
If any of these faults are displayed, the first thing to check is that the cell is in a good condition;
then make any necessary corrections to the pool water.
The water conductivity is proportional to salinity, but also depends on the temperature at a rate of
2.2% per degree Celsius.
Salinity (in g/l)
10°C
15°C
20°C
25°C
30°C
35°C
40°C
Minimum
2.3
2.1
1.8
1.5
1.2
1.0
0.7
Ideal
4,2
3.8
3,4
3
2.6
2,2
1.8
Maxi
5,7
5,1
4,6
4
3,5
2,9
2,4
At 35°C, the max. salt rate therefore goes from 4g/l to
2.9g/l
.
