It is very important to keep the bottom track free of dirt. Use your vacuum cleaner attachment to clean the bottom track regularly so that the panels can slide smoothly.
Dust your aluminium shutters frequently and use a damp cloth with a mild detergent to wipe off marks.
You may hose down your aluminium shutters on an outside installation, eg a patio.
The tension of the louvres may be adjusted by adjusting the small screws at the back of the tilt rods.