20
1 - M
OTORIZED
U
NIT
Setup and Confi gurations
Installation of a single unit confi guration – freestanding
Installation of a multiple units confi guration – freestanding
(requires the use of two bearing bridge adapters – sold separately)
The following installation steps can be used only for a
standard confi guration
. Non
standard confi gurations are not allowed for freestanding installations. For more information
about the defi nition of a standard confi guration, refer to p. 17 of this section.
1-
Prepare
the
fi rst motorized unit and the area where the setup will be installed as described
in the general guidelines on p. 18 (steps 1 through 15). Make sure that the base outriggers
on
the
back
of the motorized unit are completely extended and the base outriggers
on
the
front
of the unit are extended to the appropriate distance, as described in step
4 of the general guidelines and in fi g. 1.25, p. 19. Make sure all base outriggers
are properly locked in place.
Positioning the fi rst motorized unit
Verifi cation of the setup
4-
Make
a
fi nal verifi cation of the setup before starting to install mast sections. Make
sure all the guardrails are in place and secure (see p. 91 of the
Accessories
section
for more information about guardrails). In all cases where workers are exposed to fall
hazards greater than specifi ed by local regulations, the installation of guardrails or
face guardrail supports is
mandatory
.
5-
Before authorizing workers to use the motorized unit, perform every step in the daily
inspection checklist. If required, fi ll out the handover sheet to complete the installation.
Refer to p. 120 of the
Transport, Storage and Maintenance
section for more information
about the daily inspection checklist and to p. 124 for information about the handover
sheet.
WARNING
A freestanding setup must not be raised over 35' (10,1 m) with a 24' (7,3 m)
motorized unit and 25' (7,6 m) with a 14' (4,3 m) motorized unit.
Positioning the second motorized unit
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.
3-
Adjust the outriggers and install planks, as required and allowed (see p. 95 of the
Accessories
section for more information).
Installation of outriggers and planking
Installation of mast sections
6-
Using a crane or a rough terrain forklift, load mast sections on the unit.
Mast
sections should be stored horizontally and distributed equally on the motorized
unit to ensure good balance
. Refer to the
Load Capacities
section on p. 80 for
more information about loading the platform.
7-
Proceed with the installation of mast sections. Refer to p. 69 of the
Masts and Mast
Ties
section for instructions on how to install mast sections.
8-
Install as many mast sections as required to reach the desired height, equal or inferior
to the maximum allowable height for a freestanding installation, making sure throughout
the process that each mast remains plumb on both its front and side axis. It is important
to install mast sections alternately – one on mast, then one on the other, to ensure
good balance. Refer to p. 70 of the
Masts and Mast Ties
section for more details on
the maximum allowable height for a freestanding installation.
9-
It is important to make sure to verify the mast bolts on each mast when lowering the
platform to make sure they are tightened to the proper torque and are in good
condition, especially on
brand
-
new mast sections
, as the galvanized coating
may have compressed. In all cases, mast bolts must be tightened to a torque of
120 lb-ft (163 N-m). Failure to tighten bolts properly may lead to serious injury or
death.
