Siemens 620 appendix Position Fan Side Down Port Side Down

Setting Up and Operating the SIMATIC Box PC 620

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. An external fire protection housing is not necessary.

Position 5		Position 6
(Fan Side Down)	***)	(Port Side Down)	***)

***) not permissible for installed Floppy Disk, CD ROM, CD RW/DVD or LS240 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.

SIMATIC Box PC 620 Manual	3-9
A5E00131465-01