2019/08 - Indice de révision : D - Code : 29650
TRAITEMENT DE L'EAU
54/72
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.
