English to Dutch Tech/Engineering Mechanics / Mech Engineering generator

Air-water heat exchanger cooling
In generators with air-water heat exchangers, the internal air, in a closed circuit, is cooled by the radiator, which is a surface heat transmitter designed to dissipate heat.
Clean water with the following characteristics must be used as coolant:
pH:
6 to 9;
Chlorides: maximum 25.0 mg/l;
Sulphates: maximum 3.0 mg/l;
Manganese: maximum 0.5 mg/l;
Suspended solids: maximum 30.0 mg/l;
Ammonia: without ammonia dashes.