16 Further technical information
EN
74
Rittal Liquid Cooling Package
16
Further technical information
16.1 Hydrological information
To avoid system damage and to ensure safe opera-
tion, Rittal GmbH & Co KG recommends the use of
system water or an additive whose composition does
not differ from the hydrological data presented below:
Tab. 41: Hydrological data
pH value
7 – 8.5
Carbonate hardness
> 3 < 8 °dH
Free carbonic acid
8 – 15 mg/dm
3
Accompanying
carbonic acid
8 – 15 mg/dm
3
Corrosive carbonic
acid
0 mg/dm
3
Sulphides
Free
Oxygen
< 10 mg/dm
3
Chloride ions
< 50 mg/dm
3
Sulphate ions
< 250 mg/dm
3
Nitrates and nitrites
< 10 mg/dm
3
COD
< 7 mg/dm
3
Ammonia
< 5 mg/dm
3
Iron
< 0.2 mg/dm
3
Manganese
< 0.2 mg/dm
3
Conductivity
< 2200 μS/cm
Evaporation residue
< 500 mg/dm
3
Potassium perman-
ganate consumption
< 25 mg/dm
3
Suspended matter
< 3 mg/dm
3
> 3 < 15 mg/dm
3
, partial flow pu-
rification recommended
> 15 mg/dm
3
, continuous purifi-
cation recommended
