Hardi ALPHA evo ALU-TWIN FORCE Instruction Book page 47

Folding the boom
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ATTENTION! The boom should always be folded on flat ground and with the machine at standstill.
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NOTE! To avoid any violent impact that could damage certain parts of the boom, always control movements,
especially at the end of the folding operation.
• Press the pushbuttons fig.9 and fig.11 of the slant corrector to place the boom in a horizontal position.
• Press the pushbuttons fig.13 to lock the central frame and prevent any risk of the boom tipping over.
• Press the pushbuttons fig. 7 to raise the central frame.
• Press the tilt adjustment pushbuttons fig.8 and fig.10 to raise the left or right side boom.
• First fold the outer sections then the inner sections. They can sometimes be folded simultaneously. When the inner
sections are completely folded the locking ratchets on the parallelogram arms fall into place to lock the central frame
at the top for when it comes down.
• Press the pushbutton fig.12 to lower the boom onto the plates and place the parallelogram arms on the locking
ratchets.
Alternative boom widths
Some boom models, such as for example 18/36 metres, require a special procedure for folding and unfolding the sections.
In this case a sticker is placed in the cabin.
• Release the boom from the plates
• Gently unfold the outer sections (1), before completely unfolding
the inner sections (2).
• Ensure that you gently fold the inner sections before completely
folding the outer sections.
Folding the outer sections
You may need to fold one of the outer sections to pass an obstacle (fence, pole etc.).
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NOTE! Take care when working with one of the outer sections folded. In fact, locking of the central frame should be
activated to compensate the imbalance of the boom as a whole. Only use this position temporarily to avoid any
damage.
÷
NOTE! Outer section folding operations should always be carried out with the machine at standstill and preferably on
flat ground.
• Press the slant corrector switch fig. 9 and fig.11 to place the boom in a horizontal position.
• Press the pushbutton fig.13 to lock the central frame
• Press the switch of the outer section to be folded.
5- Operation
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