Hydro Mobile F200 - Multiple Mast Handler

116
fi g. 8.36
fi g. 8.37
fi g. 8.38
8 - A
Multiple Mast Handler
(optional)
The use of the multiple mast handler will allow the qualifi ed erector/dismantler to install
pre-assembled lengths of mast (also referred to as “sticks”) and reduce the time required
to achieve the assembly of the mast.
1- Pre-assemble a length of mast sections on the ground. Mast sections must be laid down
horizontally on the ground. For instructions on the assembly of mast sections, refer
to p. 84 of the Mast and Mast Ties section. Tighten all bolts to 150 lb-ft (203 N-m).
2- The length of pre-assembled mast allowed will be equal to the authorized height of mast in
feet (meters) between two tie levels for the confi guration, according to the selected method
of installation and the mast tie schedule specifi c to that method of installation.
3- For more information about methods of installation, refer to p. 20 of the Motorized
Unit section. Refer also to the Mast Tie Schedule tables on p. 87 for information
about distances between tie levels.
4- Install the multiple mast handler on the middle step of the second mast section of the
pre-assembled length of mast (fi g. 8.38).
Installation
Middle step of
second mast
section
Maximum length equal to authorized height
between two tie levels
Sling
attached to
shackle on
mast handler
Mast handler shown in red for illustration purposes only
5- It is important to consider the weight of the pre-assembled length of mast that must
be lifted and to make sure to select a sling, chain or cable that can lift that weight.
For example, a pre-assembled length of two-rack mast sections (9 mast sections) will
weigh 3285 lb (1490 kg).
6- Insert the sling (or chain or cable) through the pre-assembled length of mast and attach
the hook to the shackle on the mast handler.
7- Using a crane (or a forklift), carefully lift and lower the pre-assembled length of mast
on top of the last mast section installed.
8- Still holding the length of mast, attach the bottom mast section to the top of the mast
section already installed. For instructions on the assembly of mast sections, refer to
p. 84 of the Mast and Mast Ties section. Tighten all bolts to 150 lb-ft (203 N-m).
9- Remove the shackle from the mast handler to release the hook and sling. Monitor the
release of the sling to avoid potential interferences.
10- Remove the multiple mast handler from the mast section.
11- Raise the motorized unit on the newly added length of mast, making sure that mast
bolts are tightened at the proper torque while rising.
12- Install the next tie level.
13- Repeat steps 2 to 12 for each pre-assembled length of mast to install, as required
and allowed.