Sulphates (SO
4
--
)
Closed cooling system : sulphates < 400 ppm
Open cooling system : sulphates < 150 ppm
Carbonate hardness
Closed cooling system : 50-1000 ppm CaCO
3
Open cooling system : 50-500 ppm CaCO
3
HCO
3
-
/ SO
4
2-
should be > 1
Ammonia
< 0.5 ppm
Copper
< 1 ppm
Iron and manganese
< 1 ppm
Organics
No algae
No oil
Suspended solids
Non-soluble particles, size < 1 mm.
< 10 ppm
7.9 General pictographs
Pictographs
Reference Name
1 Condensate valve, intercooler
2 Automatic condensate outlet, intercooler
3 Automatic condensate outlet, aftercooler
Instruction book
234 2920 1815 04
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