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5
Total hardness test
2 3
1 min
1s
T
O
T
A
L
T
E
S
T
H
A
R
D
N
E
S
S
1
To determine descaling frequency, refer to the table (months of use or number of used tanks).
1
0
4
3
2
x
240 L
x
180 L
x
120 L
x
70 L
x
40 L
TOTAL HARDNESS TEST MONTHS NUMBER OF WATER TANKS L
TOTAL HARDNESS TEST