Air-To-Water Heat Exchanger - Siemens SINAMICS S120 Equipment Manual

Internal Liquid Cooling

10.8 Air-to-water heat exchanger

10.8 Air-to-water heat exchanger
If a process water network is not installed but it is nonetheless best to use water-cooled
frequency converters, an air-to-water cooling system can be used. The temperature of the
ambient air must not be excessively high (e.g. > 35°C) (in accordance with the technical data
for the air-to-water heat exchanger).
During setup, you must ensure that a primary air cooling circuit and not a process water
circuit is installed.
Measures to prevent supercooling must only be taken on the secondary side by means of
temperature closed-loop control, a thermostat, or a solenoid valve.
Figure 10-2
214
Air-to-water heat exchanger
Booksize cold-plate power units
Manual, (GH4), 03.2007, 6SL3097-2AJ00-0BP4