Replacing Power Units - Siemens SINAMICS S120 Manual

Removing/installing filter mats in the cabinet doors (IP23/IP43)
Figure 7-5
1. Insert the screwdriver into the cut-out sections provided (1) and gently push the grille
cover (2) down and forwards, then remove it.
2. Remove the filter mat (3).
3. Clean the ventilation grille (5).
4. Insert the new filter mat.
5. Replace the grille cover and gently snap it back into position in the cut-out sections.
6. Repeat the procedure for all filter mats that need to be replaced.
Note
Correct replacement of filter mats
Make sure that no dirt falls into the cabinet!
If not observed, then the intended IP23/IP43 degree of protection will not be achieved!
When disposing of old filter mats, observe the applicable legal requirements!
7.5.6

Replacing power units

The components required for connecting the DC busbars to the power unit are supplied as
standard. If a component is replaced, you may have to restore these connections. The
connection procedure is described in the following section.
Preparatory steps:
● Disconnect the cabinet from the power supply (do not forget the external power supplies).
● Allow unimpeded access to the DC busbars
(if necessary, remove the protective covers during installation work)
Cabinet Modules liquid cooled
Equipment Manual, 04/2020, A5E37067587A
Removing/installing filter mats (IP23/IP43)
Maintenance and servicing
7.5 Replacing components
249