cecotec ForceSilence 1030 SmartExtreme Instruction Manual page 8

2. Insert the lifting tube into the hole located on the bottom, then use the nut to fix it tightly.
3. Loosen the locknut to lift and extend the lifting tube to the desired height and then fix
tightly the lock again.
4. Loose the locknut on the fan body, introduce the lifting tube in the fan's body and tighten
the nut.