Miele ProLine CS 1013-1 Operating And Installation Instructions page 29

The surface of the burner caps will
become more matt over time. This is
normal and does not indicate damage
to the burner caps. Nor will it affect
the operation of the cooktop.
Reassembling the burner
 Place the burner head  on the
burner base  so that the flame
failure monitor  and the ignitor 
extend through their respective holes
in the burner head.
The burner head must click into place
correctly.
 Place the burner cap  flat over the
burner head . When correctly
positioned, it will not slide about.
Ensure parts are reassembled in the
correct order after cleaning.
Cleaning and care
29