54
fi g. 3.47
3 - B
RIDGES
Inside / Outside Corner Bearing Bridge Setup
Bridge Setups
Alternate Bridge Confi gurations
An inside or outside corner bearing bridge setup is the installation of a bearing bridge structure
between two motorized units installed at a 90° angle from one another. It is important to note
that fl ush bearing bridge adapters cannot be used when a bearing bridge is used in a corner
confi guration.
The following installation steps must be carried out as part of a selected method of
installation appropriate for the confi guration. For more information about setups and
confi gurations, refer to p. 18 of the Motorized Unit section.
1-
Prepare and position the fi rst motorized unit and the area where the setup will be
installed as described in the instructions steps included in the method of installation
appropriate for the confi guration. For more information about methods of installation,
refer to p. 18 of the
Motorized Unit
section.
2-
Determine the position of the second motorized unit while making sure that the ideal
distance is kept between the two motorized units. Refer to the installation instructions
for a bearing bridge structure, on p. 46 of the
Bridges
section.
Angled Bearing Bridge Setup
(requires the use of one or two optional MPI bridges)
(requires the use of an optional 6' (1,8 m) bridge)
Installation of a multi purpose insert bridge (
MPI
)
6-
If required, install a cantilever multi purpose insert bridge (
MPI
) on the second
motorized unit to support the bearing bridge structure at an angle. Refer to steps 1
through 4 of the installation instructions for a cantilever multi purpose insert bridge (
MPI
)
on p. 50 of this section.
Complete the installation of the bearing bridge structure
7-
Carefully lower the bearing bridge structure on the motorized unit or the
MPI
installed,
making sure the overlap is appropriate. Refer to step 4 of these installation instructions
if this end of the structure is also at an angle or to the regular bearing bridge installation
procedure, on p. 46 of this section.
8-
Make sure all safety chains are properly installed and secured.
9-
Proceed with the installation steps as described in the method of installation
appropriate for the confi guration. For more information about methods of installation,
refer to p. 18 of the
Motorized Unit
section.
10-
Once the bearing bridge structure and the cantilever bridges are installed, apply the
appropriate counterweight on the unit supporting the angled bearing bridge structure.
The counterweight must be set between the mast section and the edge of the
motorized unit (see fi g. 3.46). Refer to p. 89 and p. 90 of the
Load Capacities
section for counterweight requirements and load capacities for an angled bearing
bridge
confi guration.
Positioning the motorized units
WARNING
During the pre-installation of an angled or corner bearing bridge setup, it is
important to make sure that any required counterweight is in place
before
the start of any pre-installation operation.
Bearing
bridge
6' (1,8 m) bridge
Edges of bearing
bridge and 6' (1,8 m)
bridge perfectly aligned,
creating overlap area
on the corner of the unit
(shown in yellow)
Overlap area
Motorized unit
