Maeda MC815C, Operation Manual, Page: 128 / 426

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4. RECOVERY OPERATION FROM AUTOMATIC STOP
To recover from the overload condition, perform one of the following so as to operate the crane
in reverse order when it is automatically stopped.
(1) Unwind the wire rope to lower the hook, and place the suspended load on the ground.
(2) Retract the boom.
5. RECOVERY OPERATION BY USING BOOM LIFT BY-PASS SWITCH
Use the boom lift by-pass switch only when boom lowering operation or boom
extending operation is automatically stopped due to overloading.
Never use this switch for lifting a load from the ground in normal situation. Using the
boom lift by-pass switch to lift a load from the ground may cause critical danger due to
tipping or breakage of the machine.
NOTES
・
Boom raising operation using boom lift by-pass switch does not work by remote control. To
use this switch, turn off the remote control and operate on the machine.
・
While using this switch, machine condition becomes like the following.
・ Engine rotation slows down.
・
Continuous buzzer sounds.
・
Red rotary lamp lights.
In auto-stop condition, if you inevitably need to raise the
boom, you can operate to raise the boom only while
pushing the “Eco mode switch / Boom lift bypass switch”, or
while touching the screen.