Siemens Simatic 620 Owner's Manual page 42

Setting Up and Operating the SIMATIC Box PC 620
Permissible Fitting Positions of the PC to UL1950/EN60950/CSA22.2 No. 950
An inclined position of ± 20_ is allowed in each of the permissible fitting positions.
Position 1 (Preferred Position) Position 2 *)
Position 3 (Desktop) *) Position 4 (Ceiling) **)
*) not permissible for installed LS240 Drive .
**) not permissible for installed CD ROM, CD RW/DVD Drive
SIMATIC Box PC 620 Manual
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A5E00131465-01