Fromm & Starck STAR ATFE 11 Manual De Instrucciones página 48

a) Method one
Gently, without tightening completely, screw the screws (B) into the support
beam (6). Then fasten first one side of the trough and then the other side on these
screws. Tighten the bolts (B) with an Allen key (F). Secure the trough to the side beam
(5) in the same way.
b) Method two