Siemens SIRIUS ACT 3SU1 System Manual page 120

3SU10 pushbuttons and indicator lights
5.3 Mounting
6.
7.
8.
120
Remove the holder to the rear from the EMERGENCY STOP mushroom pushbutton
(or any other actuating or signaling element).
Remove the EMERGENCY STOP mushroom pushbutton.
Remove the backing plate (optional step).
SIRIUS ACT 3SU1 pushbuttons and signaling devices
System Manual, 08/2018, A5E03457306020A/RS-AK/010