29
1 - M
OTORIZED
U
NIT
Installation of the hoist
2-
If required and allowed, install a hoist. It is important to note that during pre-installation,
the hoist can be used
only
to handle mast sections and cannot be used above the last
tie level installed. For information on the installation and use of the hoist, refer to
p. 103 of the
Accessories
section.
Setup and confi gurations
Single unit confi guration with mast ties – pre-installation
C
Verifi cation of the setup
3-
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
.
Installation of mast sections and mast ties
4-
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.
5-
Install mast sections until a fi rst tie level is required. Refer to p. 69 of the
Mast and
Mast
Ties
section for instructions on how to install mast sections. It is important to
install mast sections alternately – one on one mast, then one on the other, to ensure good
balance. For more information about the schedule of installation of tie levels, refer to
the
Mast Tie Schedule
table on p. 70 of the
Masts and Mast Ties
section. Refer to
p. 70 of the
Masts and Mast Ties
section for instructions on how to install mast ties.
6-
Install as many mast sections as the plan layout requires and as is allowed. A setup
with mast ties should not be raised above 250' (76 m). Make sure throughout the
process that each mast remains plumb on both its front and side axis and that tie levels
are installed when required.
7-
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.
Installation of bridges and additional equipment
8-
With the motorized unit at base level, install as many bridges as is required and
allowed. For instructions on how to install a bridge, refer to p. 43 of the
Bridges
section.
Refer to the
Load Capacities
section on p. 80 for the maximum number of bridges
allowed in a setup. It is important to note that
loads cannot be applied on bridges
during
pre-installation
.
9-
Install additional equipment as is required and allowed. For information about the
combined use of equipment and accessories allowed for a confi guration, refer to the
Combination of Standard and Non Standard Confi gurations
table in fi g. 1.24, p. 17.
For instructions on the installation and use of forward extension or swivel bridges,
refer to the
Bridges
section on p. 43.
Installation of outriggers and planking
10-
Adjust the outriggers and install planks, as required and allowed (see p. 95 of the
Accessories
section for more information).
Preparing for operation
11-
Once all tie levels are in place, the hoist can be used as required.
12-
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.
