Siemens SINAMICS S120 Equipment Manual page 222

Line Modules Booksize
3.4 Basic Line Modules with internal air cooling
Completely pull out the fan module
Observe the air flow direction markings when inserting the
new fan
Push in the fan in guide rails 1 and 2.
Connect the two fan cables. Close the device cover and
tighten the six screws with 0.8 Nm
222
Slightly push the fan holder apart and pull out the fan
Observe the cable guide
Manual, (GH2), 06/2008, 6SL3097-2AC00-0BP6
Booksize power units