Proface LT4300M - 5.7 Modular HMI + Control" - Manual (Page 66)

LT Installation
66
 The panel face is not inclined more than 30 ° when installing the unit in a slanted panel:
 The power plug is positioned vertically when the unit is vertically installed.
 The unit is at least 100 mm (3.94 in.) away from adjacent structures and other equipment for
easier maintenance, operation, and improved ventilation:
Step Action
1 Place the unit on a clean and level surface with the display panel facing
downward.
2 The support thickness depends on the material:
 Steel sheet: between 1.5 and 6 mm (0.059 in. and 0.236 in.)
 Plastic: between 3 and 6 mm (0.118 in. and 0.236 in.)
If the thickness is between 1 and 1.5 mm (0.039 in. and 0.059 in.) for a steel
sheet support or between 1 mm and 3 mm (0.039 in. and 0.118 in.) for plastic,
use the spacer adaptor supplied in accessory kit PFXZGMAK1 (sold separately).