Doosan DX700LC Operation And Maintenance Manual page 37

Prohibited Operations
Do not dig the work face under an overhang. This may cause the
overhang to collapse and fall on top of the machine.
Do not carry out deep digging under the front of the machine.
The ground under the machine may collapse and cause the
machine to fall.
Working heavy loads over loose, soft ground or uneven, broken
terrain can cause dangerous side load conditions and possible
tipover and injury. Travel without a load or a balanced load may
also be hazardous.
Never relay on lift jacks or other inadequate supports when work
is being done. Block tracks fore and aft to prevent any
movement.
When using the machine, to prevent accidents caused by
damage to the work equipment and overturning because of an
excessive load, do not use the machine in excess of its ability (in
terms of the maximum load and stability determined by the
structure of the machine).
When working at the edge of an excavation or on a road
shoulder, the machine could tip over, possibly resulting in
serious injury or death. Investigate the configuration and ground
conditions of the work site beforehand to prevent the machine
from falling and to prevent the ground, stockpiles, or banks from
collapsing.
Safety
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Figure 22
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