BECKHOFF C9900-M298 - Manual (Page 5)

General Notes
Basic safety measures
i
Note
The wall mounting frame may only be used in conjunction with the
designated Beckhoff Control Panel.
Warning
Before installing and removing the Control Panel, all system
components must be switched off, and the Control Panel must be
uncoupled from the system.
Disconnect the device by unplugging the connectors on the Control Panel
side.
System components that have been switched off must be secured
against being switched on again.
Operator's obligation to exercise diligence
Warning
Only qualified personnel may install the Control Panel in the wall
mounting frame.
The operator must ensure that only appropriately trained electricians deal
with installation and wiring of the Control Panel.
Warning
After installation check the Control Panel for secure fastening in the
frame.
Ensure that inadvertent detachment of the Control Panel from the wall
mounting frame is prevented.
C9900 wall mounting frame 3