Maeda MC815C, Operation Manual, Page: 132 / 426

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[6] CLOCKWISE/COUNTER-CLOCKWISE SLEW ANGLE LIMITER SWITCHES
Use these switches to set or reset the upper limit angles for
the boom slew angle.
[Setting]
With no value being set for the upper limit angle, rotate the
boom to an angle you want to set as an upper limit, and
push and hold the switch for 2 seconds.
The slewing angle at this time will be set as an upper limit
angle.
At the same time, the illuminated blue indicator lamp on the
switch turns orange to indicate that the upper limit has
been set.
To make this setting effective, either temporarily turn the
key switch [OFF] and then back [ON] again; or, with the
engine running, change the slew angle until you leave the
warning alarm zone.
[Resetting]
To reset the upper limit angle that has been set (the indicator lamp is illuminated in orange), push
and hold the switch for 5 seconds. The currently set upper limit angle will be reset. At the same
time the illuminated orange indicator lamp at the switch turns blue to indicate that the upper limit
angle has been reset.
NOTES
The setting and resetting operations cannot be performed consecutively even if the switch is
pressed and held for 2 seconds. To perform these operations consecutively, release your finger
from the switch between each operation.
1.5.5 MOMENT LIMITER FUNCTIONS
[1] OVERLOAD ALARM
1. Safety area (the Actual Load is smaller than 90% of
the Rated Total Load)
• The tricolor revolving light illuminates in green.
2. Warning alarm (the Actual Load is from 90 to less
than 100 % of the Rated Total Load)
• The tricolor revolving light illuminates in yellow.
• The alarm generates an intermittent buzzer sound,
“peep, peep”.
3. Limit alarm (the Actual Load is greater than or equal
to 100% of the Rated Total Load)
• The tricolor revolving light illuminates in red.
• The alarm generates continuous sound “peep”.
• Operation of the crane’s danger side stops automatically.
4. Resetting Limit Alarm Automatic Stop
When an automatic stop occurs, immediately recover from the overload.
For recovery operations, refer to “OPERATION 1.5.3 [2] RECOVERY OPERATION FROM
AUTOMATIC STOP”.