KKT cBoxX 30 - Water Quality

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2.17. Water quality
The following limits must be maintained for safe operation of the equipment:
Table 7: Water quality
Property /
components
Unit
Value range
Standard version
Value range
Non-ferrous metal-free version
pH value (20 °C)
-
7-9
6-9
Saturation index
-
-0.2 < 0 < +0.2
-0.2 < 0 < +0.2
Conductivity
µS/cm
80-500
5-500
Water hardness
°dH
<5.6
<5.6
Carbonate hardness
mol/m³
<0.5
<0.5
Total plate count
K/ml
<10,000
<10,000
Grain size
µm
< 250
< 250
Glycol fraction (AFN)
% by vol
20-40
20-40
Oil fraction
% by vol
0
0
Chloride (Cl-)
mg/l
<50
<50
Sulphate
mg/l
<50
<50
Nitrate
mg/l
<100
<100
Copper
mg/l
<0.1
<0.1
Iron
mg/l
<0.2
<0.2
Free carbonic acid
mg/l
<20
<20
Manganese
mg/l
<0.1
<0.1
Ammonia
mg/l
<2
<2
Free chloride
mg/l
<0.5
<0.5
Sulphide
mg/l
<0.03
<0.03
In order to avoid a restriction of the plate heat exchanger the above listed limit values have to be
guaranteed imperatively.
Furthermore mucilage bacteria are not allowed in the cooling water. If that is not possible, KKT
chillers can recommend an accordant inhibitor based on a biologic water analysis.