Tadano GT-550E-2, Руководство по эксплуатации и обслуживанию

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Front Jack Overload Warning Device
The purpose of the front jack overload warning device is
to prevent damage to the carrier's chassis frame by an
excessive load during an operation with the front jack
extended. When a load exceeding the limit is placed on
the front jack, the horn sounds, warning the operator of
an overload.
◆
On certain surface, the horn may sound even if the
load is within the limit. For example, when the ground
supporting the front outriggers is soft, the load on the
front jack may increase, causing the horn to sound. In
such a case, check the ground support conditions of the
outriggers and front jack.
External Warning Lamps (Option)
The external warning lamps are to inform the people en-
gaged in work around the crane of AML conditions.
While any of the following functions are deactivated, the
red lamp lights up in addition to inform the people en-
gaged in work that an automatic stop function is
deactivated.
(1) Overwind cutout function
(2) Swing stop function
(3) Automatic stop by the AML (caused by the moment
exceeding 100%, working range limit, etc.)
T038310E
53
Other Safety Devices Other Safety Devices
The horn sounds during an operation with the
front jack extended to signal that there is an
overload on the front jack. Move the boom until
the horn stops.
WARNING
When the external warning lamp in red lights,
crane operation to the critical side stops. Do not
cancel AML stop function to continue crane oper-
ation. Operate the crane toward safety side and
then the work after lamp lighting has changed
from red to orange, or lamp has gone off.
WARNING
Color Crane (or AML) conditions
Not lighted Safe
Orange Not in danger, but attention needed
• Moment ratio is within the range in
which alarm function is activated.
Red (1) In danger (Motion to critical side stops)
• Moment ratio exceeds the limit at which
automatic stop function is activated.
(2) Automatic stop function cancelled
• Swing stop function is shifted to “OFF”.
• Overwind cutout function is deactivated.
• AML override switch and override key
switch are turned ON.
T23175E
Red Orange
T00143