Factory Direct Hardware Hansgrohe 27413 Raindance - Manual (Page 6)

6
To remove scale buildup on the spray face, pour about 3/4"
of a commercial scale remover, such as Lime-Away™ or CLR™,
into a shallow dish.
Always follow the label instructions on the
scale remover.
Soak the spray face in the solution.
Scale Removal
The Raindance and Downpour showerheads use the Quick
Clean™ cleaning system.
Turn the water on lightly and rub the spray channels with a
finger or a sponge to dislodge any scale deposits.
Rinse the showerhead with clear water.
Install the showerhead.
Flush for at least one minute.