ABB UniSec Manual page 16

Figure 38. 375 mm wide units
Figure 39. 500 mm wide units
4.5.3 Connecting the units
Note: for SBR units, do not remove the roof frame.
Installation foresees the following operations:
a) Align two units side by side. Before pushing the two units com-
pletely together, make sure that the lower joining plate of the
right-hand unit is in the upper position as shown in Figure 41.
Figure 40. Two units side by side
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Figure 41. Outline of lower joining plate in upper position
b) Hammer the lower joining plate down so that the units are
firmly fixed to each other at the back.
Figure 42. Installation of lower joining plate
c) Screw up the lower joining plate (with Torx M6x12 screws).