Siemens SINAMICS DCM Operating Instructions Manual page 516

Maintenance
11.2 Replacing components
Replacing fans in 210 to 280 A units
Unlatch the fan cover at the top left and right

Tilt the fan cover around 30° and pull it out towards you

Disconnect the fan connector

Replace the fans.

Make sure you install the new fans in the correct position:

The air must be blown upwards (see the arrow on the fan enclosure).
Reconnect the fan connector and replace the fan cover.

Figure 11-4 Replacing fans in 210 - 280 A units
514
①
③
.
②
.
Operating Instructions, 1.2012, C98130-A7066-A1-05-7619
SINAMICS DCM DC Converter