BWT EES, Installation And Operating Instructions Manual

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2019/08 - Indice de révision : D - Code : 29650 TRAITEMENT DE L'EAU
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5. ADDING SALT TO THE POOL:
Before adding salt to the pool, check that the each of the water equilibrium parameters are within range:
• pH, ideally between 7.2 and 7.4 with EES
• Calcium hardness (water hardness = concentration of dissolved calcium), between 200 and 400 ppm
• T.A. (total alkalinity), between 80 and 120 ppm
Use these parameters to ensure that the water is correctly balanced (Taylor balance or Langelier index –
see appendix 1)
!
IMPORTANT If the pool was treated with PHMB in the past, eliminate all of this disinfectant before
starting the electrolyser.
!
Only use pool grade salt as stipulated in the standard EN 16-401. No other types of salt should
be used.
If the pool has not just been entirely refilled, measure the salt concentration with a suitable device because
it may contain a little salt if the water was treated with Chlorine before the electrolyser was installed.
Calculate the weight of salt to be dissolved to achieve a concentration of 3.5 g/litre (3500 ppm) in the pool
water. This will depend on the volume of water in the pool (do not forget the buffer tank if the pool has an
overflow feature), and the initial salt concentration measured beforehand.
USE THE FOLLOWING TABLE:
0 500 1000 1500 2000 2500 3000 3500 4500
10 40 35 30 25 20 15 10 5 0
20 80 70 60 50 40 30 20 10 0
30 120 105 90 75 60 45 30 15 0
40 160 140 120 100 80 60 40 20 0
50 200 175 150 125 100 75 50 25 0
60 240 210 180 150 120 90 60 30 0
70 280 245 210 175 140 105 70 35 0
80 320 280 240 200 160 120 80 40 0
90 360 315 270 225 180 135 90 45 0
100 400 350 300 250 200 150 100 50 0
110 440 385 330 275 220 165 110 55 0
120 480 420 360 300 240 180 120 60 0
130 520 455 390 325 260 195 130 65 0
140 560 490 420 350 280 210 140 70 0
150 600 525 450 375 300 225 150 75 0
Volume (in m3) of water
Initial salt concentration (ppm) in the pool
Quantity (in kg) of salt to be added to the pool
EXAMPLE:
A pool containing 100 m3 of water with an initial salt concentration of 1000 ppm (1g/litre) -> add 300 kg of
salt to obtain a final salt concentration of 3.5 g/litre.
The quantity of salt calculated should be added as follows:
• Spread the salt evenly over the entire surface of the pool: the salt pellets settle on the floor of the pool;
• Start the filtration pump and let it run continuously until the salt is totally dissolved (approximately 8 hours);
!
IMPORTANT Do not turn the electrolyser on while the salt is dissolving.