36
1 - M
OTORIZED
U
NIT
Setup and confi gurations
Dismantling an installation
Dismantling a standard single unit installation – with mast ties
C
6-
Make sure to avoid overloading the motorized unit. On higher installations, it may be required
to use a crane to remove mast sections from the motorized unit to avoid any overloads.
Refer to the
Load Capacities
section on p. 80 of for more information about loads allowed
on a motorized unit.
7-
Once at base level, remove the hoist, if installed.
8-
Remove all loads from the platform and make all workers step down.
9-
Remove all planking, push in all outriggers and secure in place. Remove and store all
guardrails. For instructions on the removal and storage of guardrails, refer to p. 118
of
the
Transport, Storage and Maintenance
section.
10-
If the unit is to be stored for any signifi cant length of time, refer to p. 118 of the
Transport,
Storage and Maintenance
section for instructions on how to properly store an M2 Series
motorized
unit.
The following dismantling steps can be used for a
non-standard confi guration with
additional equipment but no accessories other than a hoist
. Refer to fi g. 1.27,
fi g. 1.28 and fi g. 1.29 on p. 22, for details about the restrictions and allowances
for a confi guration. Refer also to p. 17 of this section for more information about
standard and non standard confi gurations.
C
Dismantling a multiple units installation with mast ties
1-
Prepare the installation as described in the safety guidelines for dismantling an
M2 Series installation, on p. 32.
2-
It is important to consider that any installed hoist can
only
be used to unload mast
sections
and
and cannot be used above the last tie level installed.
3-
Lower the motorized units to base level and remove all cantilever bridges and any
installed equipment such as a forward extension, swivel bridge or planking wider than
four
planks.
4-
Bring the motorized units to the top of the work, verifying mast bolts and mast ties on
each mast on the way up. Make sure that all mast bolts are tightened at the appropriate
torque and that all mast ties are properly tied to the face of the work.
5-
Lower the motorized units linked by a bearing bridge until the units are two rungs
(20" or 50 cm) above base level, removing mast sections and mast ties on the way down.
To make sure that the installation remains stable, remove mast sections alternately – one
on one motorized unit, then one on the other. Refer to p. 75 of the
Masts and Mast Ties
section for instructions on how to remove and transport mast sections. Refer to p. 75
of
the
Masts and Mast Ties
section for instructions on how to remove mast ties.
Mast
sections should be stored horizontally and distributed equally on the motorized
units to ensure good balance
.
6-
Make sure to avoid overloading the motorized units. On higher installations, it may be required
to use a crane to remove mast sections from the motorized units to avoid any overloads.
Refer to the
Load Capacities
section on p. 80 of for more information about loads allowed
on a motorized unit.
7-
Once at base level, remove the hoist, if installed.
8-
Remove all loads from the platform and make all workers step down.
9-
Remove all planking, push in all outriggers and secure in place. Remove and store all
guardrails. For instructions on the removal and storage of guardrails, refer to p. 118
of
the
Transport, Storage and Maintenance
section.
10-
Dismantle the bearing bridge structure as described in the instructions on p. 48 of
the
Bridges
section.
11-
If any of the units is to be stored for any signifi cant length of time, refer to p. 118 of
the
Transport, Storage and Maintenance
section for instructions on how to properly
store an M2 Series motorized unit.
