37
1 - M
ਮਲ਼ਮਨਹਤਣ
U
ਭਨਲ਼
WARNING
It is
mandatory
to make sure that
all tension (or compression) is released
from the mast tie before attempting to unpin it from the wall tie.
Setup and Confi gurations
Dismantling a standard single unit installation with mast ties
Before removing the last two tie levels
, it is
critical
to make sure that the
base
confi guration
of the motorized unit is
consistent with the tie schedule used
for
the installation of that motorized unit.
A
3-
Make sure the motorized unit is at the top of the work. Lower the motorized unit to base
level, removing mast sections and mast ties on the way down,
leaving two tie levels
in place
. Refer to p. 85 of the
Mast and Mast Ties
section for instructions on how to
remove and transport mast sections. Refer to p. 91 of the
Mast and Mast Ties
section
for instructions on how to remove mast ties.
4- Mast sections must be stored and evenly distributed on each side of the mast
to ensure good balance
. There can be up to a
maximum of four mast sections on
each side of the mast at a time
.
A ninth mast section can be loaded on the link bridge of the motorized unit, as shown
in fi g. 1.51, p. 36. It is recommended to install an optional deck extension on one of
the fi rst cantilevers attached to the unit to facilitate the handling of mast sections with
the jib arm. The deck extension must be installed on the side
opposite
to the jib arm,
as shown in fi g. 1.51, p. 36. For instructions on the installation and the use of an
optional deck extension, refer to p. 55 of the
Bridges
section.
If required, use a crane to remove mast sections from the two 5' (1,5 m) bridges attached
to the unit to avoid any overloads. Refer to the
Load Capacities
section on p. 94 of
for more information about loads allowed on an installation.
5-
When
only two tie levels are remaining
, it is important to
proceed with extreme care
to
make sure that the stability of the motorized unit is not compromised during the operation.
Once the stability of the motorized unit has been secured, proceed with the removal
of the last mast sections and tie levels.
6-
Once at base level, remove all loads from the platform and make all workers step down.
7-
Remove all planking, push in all outriggers and secure in place. Remove and store all
guardrails.
8-
Remove all installed bridges on each side of the motorized unit.
9-
If the unit used in the setup is an electrical motorized unit, disconnect the power cable
from the motorized unit and the power source.
This operation must be performed
by a certifi ed electrician
. Store the power cable properly.
10-
If the unit is to be stored for any signifi cant length of time, refer to p. 132 of the
Transport,
Storage and Maintenance
section for instructions on how to properly store an F2 Series
motorized unit.
Dismantling a single unit installation with mast ties
The following dismantling steps can be used for a
single unit confi guration
installed following method of installation “B”
. Refer to p. 23 of this section
for more information about method of installation “B”.
B
1-
Prepare the installation as described in the safety guidelines for dismantling an F2 Series
installation, on p. 36.
2-
Bring the motorized unit to base level and remove all loads from the platform.
3-
With the unit at base level, remove any installed equipment or accessory (such as wider
planking confi guration, swivel bridge, forward extension bridge, monorail, weather
protection, cantilever reinforcement cable retainer, etc.).
