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8.4 Water filter maintenance
Determining the water hardness
8.4.1
As part of the filter maintenance, it is advisable to test the
water beforehand.
To identify the carbonate hardness of the water use the spe-
cial kit as follows:
• Put 10 ml of water to be tested (1) in the test tube.
• Add a drop of reagent (2) and mix.
• Proceed in the same way by counting the number of drops
until the solution (3) turns from blue to red.
1 DROP = 1°dKH
Example: 9 Drops ----> 9°dKH carbonate hardness
3
64
104
of
8.4.2
Depending on the hardness of the water, adjust the bypass of
the water filter as shown in the table below. Example:
2
1
To adjust the bypass, push the (4) button and turn.
Bypass configuration
9°dKH water hardness
Bypass adjustment 2
Water
Bypass
hardness
Adjust.
V
(°dKH)
4
3
6,250
5
3
5,000
6
3
4,165
7
3
3,570
8
2
3,125
9
2
2,775
10
2
2,500
12
1
1,865
14
1
1,600
16
0
1,185
20
0
945
24
0
790
≥ 25
0
≤ 755
The values indicated in the table may vary, de-
pending on the type of filter cartridge used.
Filter capacity (litres)
M
L
XL
9,500
13,000 17,000
7,600
10,400 13,600
6,330
8,665
11,330
5,425
7,425
9,710
4,750
6,500
8,500
4,220
5,775
7,555
3,800
5,200
6,800
2,835
3,885
5,080
2,430
3,330
4,355
1,800
2,465
3,220
1,440
1,970
2,575
1,200
1,640
2,145
≤ 1,150 ≤ 1,575 ≤ 2,060
4
TECHNICIANS' manual
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