Siemens SIMATIC Box PC 840 Manual page 40

Setting Up and Operating the SIMATIC Box PC 840
Additional Permissible Fitting Positions of the PC to UL508/CSA 22.2 No. 142
An inclined position of ±15_ is allowed in each of the permissible fitting positions.
Position 5
(Fan Side Down) **)
Figure 3-5 Additional Permissible Fitting Positions
**) not permissible for installed CD ROM, CD RW/DVD Drive or LS 240 Drive
Caution
The fitting position with the fan side down is only permitted with additional
precautions because warmed air is drawn down against the convection current,
possibly causing a build-up of heat.
3-8
Position 6
(Port Side Down) **)
SIMATIC Box PC 840 Manual
A5E00085984-04