Here's what I found on cleaning the iron. ABOUT THE SELF-CLEANING SYSTEM
• Use the self-cleaning system to flush out minerals and
lint. If lint is allowed to accumulate in the vents, it can
scorch and cause brown spotting.
For Models D2000 and D2020: Clean about once a
month.
For Models D2010, D2030 and D2035: A "CLEAN"
indicator will appear in the digital display to notify you
when your iron needs cleaning (A).
• Fill the iron as described in "How to Use" but keep the
water level below the MAX line. Plug in the iron, set
the temperature to 6, and stand the iron on its heel
rest. Allow to heat about 3 minutes.
• Unplug the iron and take it to a sink. Holding it
horizontally over a sink, move and HOLD the variable
steam dial in the CLEAN position ( ). There may be
some hissing and spitting while self-cleaning. This is
normal.
• Stay clear of HOT steam and boiling water as it comes
out of the vents while lint, scale, and minerals flush
through! Continue to hold the variable steam dial in
the CLEAN position until all the water has emptied.
If necessary, rock the iron side to side and front to back
to empty it.
• When finished, release the variable steam dial, stand
the iron on its heel rest, and plug it in. Heat for about
2 minutes to dry out any remaining water then unplug.