MAN.234 Rev.3 ENG - Use and maintenance manual S19HD (PRO)
page
29
of
83
It is strictly forbidden to carry out the basket levelling operation
when the machine is developed.
4.4.5
Use of the aerial part
14. After making sure the aerial part consent light
7
(Picture 4) is on,
execute the manoeuvres of the MEWP aerial part using the manipu-
lators of the wired remote control station or the radio control station
described in the paragraph 3.2.1.
First lift the boom, in order to rise it from the support.
It is strictly forbidden to rotate the turret as first movement,
since it could seriously damage the machine carpentry.
4.4.5.1
Moment limiter
Thanks to a moment limiting device (anti-tipping device fitted
as standard on these machines), all operations bringing the
machine out the working diagram are ineffective.
When the maximum allowable outreach is almost reached (90%), the pre-
alarm indicator
7
lights up (Picture 9).
When the maximum allowable outreach is reached (see the working dia-
gram in Picture 2), the alarm indicator
15
lights up (Picture 9).
4.4.5.2
Load limiter
Moreover, when the MEWP exceeds its maximum permitted ca-
pacity (220 Kg/485 lb or 200 Kg/441 lb), the logic system detects
the overload and stops the work operations, warning with a
continuous acoustic signal.
During the movement of the MEWP aerial part, reaching the maximum
load selected, the load limiter safety device activates:
o
Overload up to 20 Kg (signaled by the lighting of the intermittent
block light
23
– Picture 9 and by an intermittent acoustic warning):
in this case, operations remain active, even if these two signals
warn the user about the danger; the signals will stop only removing
the overload from the basket.
o
Overload > 20 kg (indicated by the fix lighting of the block light
23
– Picture 9 and by a continuous acoustic warning): the load limiter
safety device stops all operations of the extendable structure.
The operator must remove the overload from the basket to con-
tinue the work with the MEWP.
It is strictly forbidden to use the MEWP when the load limiter
warning is on. Remove the exceeding load from the basket until
the acoustic signal and the relative light go out.
4.4.5.3
Slowdown of the aerial part maneuvers
Slowdowns can be set by software for start and end of each aerial part
maneuver (lifting/lowering of arms, extension/retraction of arms, clockwise/
anticlockwise rotation of the turret, opening/closing jib), valid in the follow-
ing conditions:
o
boom angle >x° or <x°;
o
boom extension >x mm or <x mm;
o
opening jib >x mm or <x mm;
o
pre-alarm condition (90% of the block);
4.4.5.4
Anti-crash system
When the machine is stabilized in the predefined areas, both with tracks
resting on the ground and raised, the stabilizers with their curved structure
can reach a height greater than that of the machine frame.
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