Mitsubishi Electric PAR-CT01MAU-SB Instruction Book page 68

Function settings
4
Wipe with a soft dry cloth, a cloth soaked in water with mild detergent, or a cloth dampened with ethanol. Do
not use acidic, alkaline, or organic solvents.
68
This screen allows the user to wipe the touch panel
for 30 seconds without accidentally changing the
settings.
The display will return to the touch panel menu after
the 30 seconds.