40
h —— Retract arm
Composite movement of excavator
(1) When the machine slew, you can operate the
composite movement of boom and bucket.
(2) It can operate as follows: bucket digging while arm
flexing; arm digging while lowering boom, etc.
(3) Besides the co-operation between right and left
handle, pull either of handles to any diagonal orientation (45
direction), it can achieve the adjacent 2 composite movements.
Slewing platform brake
Release slewing control handle, return it to neutral position, it will bring sufficient brake power to brake
platform. And reverse handle operation can bring more brake torque.
Attention for excavation
(1) Operator must wear safety helmet and work clothes, make sure the safety of working area, then
start machine to work.
(2) During digging work, the dozer blade should be placed on ground.
(3) During excavation, especially deep digging work, pay attention to avoid bucket teeth colliding
with dozer blade, and also avoid boom cylinder colliding with track shoe.
(4) Other people are not permitted to stand on the machine or within the range of 8m away from
working radius. When begin to work or transport with full load, operator should ring horn to warn.
(5) Bucket should dig along the cutting track and avoid digging hard earth constrainedly, otherwise it
will cause the hydraulic oil overheated.
(6) During work, do your best to avoid pulling the handle to the end, otherwise it will cause hydraulic
oil overheated and damaging components.
(7) Not allow slewing if bucket doesn‘t leave working face.
(8) It allows using arm and bucket to impel or level off rideau, but never operate side of bucket to do
that.
(9) When work at swampy ground (especially on rainy day), the excavator must keep a proper
distance away from working face to prevent collapse.
(10) After stop machine, it should shut off all switches of control panel, shut off electric power, and
lock cabin.
(11) During digging work, avoid overload work to reduce energy consumption and hydraulic oil
temperature.
(12) During digging work, pay attention to the cylinder stroke end, avoid using baffle of boom, arm,
and bucket to prolong the lifetime of framework.
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