Siemens PA21011M Mode D'emploi page 46

Storage requirements
When the appliance is out of use for a long
period, set the expulsion tube to parking
position so that the appliance takes up as little
space as possible.
To do this, bend the tube towards the back
of the appliance and secure it with the
diffusion hook, Figs. 24 and 25.
Cleaning and Maintenance
Fig. 24
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Prior to use at change of season
Clean the air filter.
Clean the casing and the grilles if
necessary.
Fig. 25