23
WTC 600 LP / MP
OPERATION OF THE SYSTEM
Service Handbook 08.2004
3.2.3
Antiscalant
The drinking water for the metering solution is taken from the sampling tap for drinking
water (1/4.21).
The antiscalant metering quantity can be set with a very good approximation using the following
table. The optimum quantity can only be calculated using a calculation program after a precise
water analysis has been carried out. The typical metering range lies between 2 and 5 mg/l.
Where water hardnesses are higher than 28°dH, special design is necessary.
If this design is not possible, the following setting is recommended: 5 mg/l RM5000 and 50%
yield, until the precise design is available.
Range of Water Hardness
Antiscalant [mg/l]
Metered
Run-down
amount of
Tank Service
RM 5000 [ml]
Life [h]
per 10 l
Metering
Solution
1 (0°-7° dH)
2,5
58
214
2 (7°-14° dH)
3
69
214
3 (14°-21° dH)
4
92
214
4 (21°-28° dH)
5
115
214
Table 10
Metering of antiscalant at 75% yield
Range of Water Hardness
Antiscalant [mg/l]
Metered
Run-down
amount of
Tank Service
RM 5000 [ml]
Life [h]
per 10 l
Metering
Solution
1 (0°-7° dH)
2,5
87
214
2 (7°-14° dH)
3
104
214
3 (14°-21° dH)
4
138
214
4 (21°-28° dH)
5
173
214
Table 11
Metering of antiscalant at 50% yield
1 °dH = 1,79 °frH
1 °dH = 17,9 mg CaCO3/l
1 °frH = 10,0 mg CaCO3/l
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