Centurion SD04 - Page 33

page 33
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OPERATOR INSTALLATION
SECTION 6
FIGURE 57
FIGURE 59
Lift the SDO4 to a point where the
control unit (Point B) is in line with
the top of the open garage door
(Point A).
Drawalineontheceilingjoining
these two marks, perpendicular to
the garage door center line made
earlier.
Spirit level
Spirit level
Drive rail
hanger bolt
A
SDO4
Control
Head
Garage door
A B
Point A in line
with Point B
SDO4
Ceiling
Keeping the control unit in line with
the top of the garage door, place
a spirit level perpendicular to the
ceiling, and line it up with the center
of the drive rail hanger bolt on the
side of the drive rail hanger. Make a
mark on the ceiling, and repeat this
for the other side of the drive rail
hanger.
Ensure that the drive rail
hanger bracket is positioned
directly under a strong
structural member of the
ceiling. If it is not, move
it along the drive rail to
a suitable position before
markingitoontheceiling.
We recommend that the
maximum cantilever
distance between the
hanger bracket and the
front edge of the control
unit does not exceed
300mm.
(Markedas‘A’inFigure58)
Garage door center line
Structural
member
of ceiling
FIGURE 58
SDO4
Control
unit