09.2020
Seite 114 / 197
– During digging operations in certain conditions, the
boom, arm or bucket may contact upper part or lower
part of the machine itself.
– Do not allow a hydraulic cylinder to extend completely in
succession, because the fully telescoping cylinder will
cause machine damage, for example, when the arm
cylinder is completely retracted while the bucket cylinder
extends to enable digging operation.
– When the bucket is resisted on ground, do not travel or
swing.
– Do not attempt to move stones and crack up walls using
swing actions; otherwise, serious machine damage will
result.
– Do not move objects by swinging; otherwise, mechanical
structures will be damaged.
– Do not use dead weight of the equipment to increase its
digging force.
– When working on loose or muddy zones, prevent the
machine from sinking.
– Keep enough distance between the machine and the
service lines in the air. (see chapter 2.8-2.9 and 2.10)
– Do not dig the area under the excavator.
– When the machine is working at roadside or close to a
cliff, make sure that the ground is firm enough. In hard
and dangerous terrain conditions, assign a signal man,
keep the travel motor at rear of the equipment and the
bucket at front, and maintain correct angle between
crawlers and roadside.
