BAC ICE CHILLER TSU-C-D, Operating And Maintenance Instructions Manual

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4 Water Care
4 Water Care
W W W . B A L T I M O R E A I R C O I L . E U
15
WATER CARE
About Water Care
In the near freezing temperatures of the ICE CHILLER
®
Thermal Storage Unit, scale and corrosion are naturally
minimized. Therefore, for the tank water side of the units, a water treatment program to prevent scale or corrosion
is not normally needed, unless the water is corrosive in nature. To control biological growth, a biocide may be
needed on a periodic basis to prevent the growth of corrosive bacteria. In general, BAC recommends the following
guidelines. (See Table below).
Recommended Tank Water Quality
pH 7.0 to 9.0 *
Hardness (as CaCO
3
) 90 to 500 mg/l
Alkalinity (as CaCO
3
) 500 mg/l max.
Total Dissolved Solids 1000 mg/l max.
Chlorides 125 mg/l max.
Sulfates 125 mg/l max.
Conductivity 100-700 µS/cm
Water Quality Guidelines
* Tank water pH of 8.2 or higher will require periodic passivation of the galvanized steel coils to prevent "white rust", the accumulation of white,
waxy, non-protective zinc corrosion products on galvanized steel surfaces.
Minimum conductivity of 100 µS/cm and maximum of 700 µS/cm (at 0°C) is important for proper operation
of the ICE LOGIC™ ice quantity controller.
Caution
DO NOT TREAT THE TANK WATER WITH CHEMICALS THAT ALTER THE FREEZE POINT OF
WATER
TSU-C-D
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