CENTURION SYSTEMS SDO4 SMART Installation Manual page 17

SECTION 6
It is highly recommended to
complete Steps 4 and 5 with
the head unit still inside its
packaging. This is to protect
it from possible damage and
scratching.
4. Place the two U-Brackets into
position over the four holes found
on the head unit (Figure 9).
5. Secure the U-Brackets into
position using 4x black M6x12mm
screws supplied (Figure 10).
6.1.3. Tensioning the belt
The belt comes pre-tensioned from
the factory; however, ensure that
the spaces between the spring
windings are 0.5-1mm. Use a 13mm
socket and wrench to tighten the
drive should there, for whatever
reason, be a deviation from these
values.
U-Brackets
M6x12mm
Screws
Drive belt
tensioning
bolt
To relax the
drive belt
13mm Socket
and Wrench
page 17
OPERATOR INSTALLATION
FIGURE 9
FIGURE 10
End B
To tension the
drive belt
FIGURE 11
www.centsys.com