Replacing The Filter Mats - Siemens SINAMICS S120 Equipment Manual

Maintenance and servicing
6.4 Replacing components
6.4.4

Replacing the filter mats

Replacing the filter mats (for IP23/IP43/IP54)
The filter mats must be checked at regular intervals. If the mats are too dirty to allow the air
supply to flow normally, they must be replaced.
Note
If you do not replace dirty filter mats, this can cause a premature thermal shutdown of the
drive.
Ordering data are available in the spare parts lists.
Preparatory steps
You must read and observe all safety information provided in this manual and comply with
the "five safety rules" for all work on electrical devices.
● Observe the "five safety rules".
● Disconnect the cabinet from the power supply (do not forget the external power supplies).
● Allow unimpeded access to the grille area of the doors.
Note
The cabinet must be disconnected from the power supply to prevent the fans from drawing in
contaminated external air. If an external power supply for the fans is used, take the coasting-
down period of the fan into account or switch off the power supply.
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DANGER
S120 Cabinet Modules Equipment Manual
Manual, (GH5), 10/2008, A5E00427098A