Siemens SINAMICS S120 Operating Instructions Manual page 97

Figure 6-2
Venting the air-to-water heat exchanger
Vent all air-water heat exchangers. Proceed as follows:
Figure 6-3
1. Hold the blue venting hose outside the cabinet in a bucket.
2. Open the venting valve at the heat exchanger so that air can escape. Continue venting until
clear cooling liquid escapes in a continuous stream.
3. Close the venting valve.
Siemens Drives & PLCs
Applications for Cabinet Modules, liquid cooled
Operating Instructions, 04/2015, A5E35974555A
Venting hose
Example: Air-water heat exchanger
Commissioning
6.2 Commissioning the cooling unit
97