Maeda MC815C, Operation Manual, Page: 293 / 426

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[4] INSPECTION OF OVER HOIST DETECTOR
When the winch is wound and the boom is extended with the
hook block (1) over hoisted, check if the buzzer sounds and
windingof the winch and extension of the boom are stopped.
If the above does not occur, the over hoist detector may be
faulty.
If the alarm does not stop sounding, the over hoist detector
may be faulty or the circuit may be open.
Ask us or our sales service agency for repair.
[5] INSPECTION OF MOMENT LIMITER
When an abnormality occurs in the moment limiter, immediately contact us or our sales
service agent.
1. Turn “ON” the starter switch.
2. Check the work status lamp. All the colors of the work status lamp should be lit for three
seconds, and then the green rotating light is lit.
3. Check that there is no error code displayed on the “Rated total load” in the moment limiter
monitor.
4. Start the engine and operate the crane as follows. Then, check if the monitor display of the
moment limiter is correct.
Crane operation and display item
Monitor display value of
moment limiter
Displayed value of “boom length” when the boom length is minimum 5.5 m
Displayed value of “boom length” when the boom length is
maximum
19.4 m
The displayed values on the angle indicator and “boom angle”
should be the same. Values on the angle
indicator
Display value of “Actual Load” when a weight whose mass is known
is hoisted
★
Must be equal to combined mass of a weight and lifting
component
★
However, some error may be generated depending on the boom
condition.
Actual load