Zoomlion ZCC1100, Operator'S Manual, Page: 286 / 291

Operator’s Manual for Crawler Crane
Assembly
and
Dismantli
ng
5-80
5.6.4.4 Lowering fixed jib
a) Move right control lever to the right to unwind derricking rope, the boom will be lowered
down. When main boom is lowered to 35°-30° position, stop lowering main boom. At this
time, unwind hoisting rope to lower the hook down to the ground. Continue to lower the
boom to make fixed jib come into contact with the ground.
b) Move right control lever to the right to unwind derricking rope to make the nylon running
wheel get down on the ground, and pull out the pin spindles of outer pipe and inner pipe of
rear tilting-back support of fixed jib (G75) manually.
c) Continue to move right control lever to the right to unwind derricking rope, the nylon
running wheel on fixed jib head will roll on the ground until entire boom frame falls down on
the ground. Move right control lever to neutral position to stop it.
d) Pull left control lever backwards to spool up hoisting winch 2 until the wire rope is wound
onto the winding drum.
e) With the help of auxiliary crane, tilt the FA-frame forwards to appropriate position, and
dismantle the rear and front anchoring rods of fixed jib.
f) Dismantle the fixed jib sections orderly from fixed jib head to the pivot section.
g) Dismantle the fixed jib assembly unit from main boom head.
CAUTION
(1) The boom-lowering movement should be performed slowly and stably. And during
the operation, the crane operator must observe the data shown on the screen, while
other workers should pay attention to environmental changes.
(2) It is prohibited to stand within an area where the crane movement is carried out.
(3) The boom should be positioned straight ahead of the crawler crane (i.e. the drive
sprocket is at the back of crane).
(4) To prevent the hoisting wire rope from being damaged due to crushing, it should be
observed by a person.
(5) A dedicated person must observe the wire rope when it is wound onto the drum,
and there should be no person in the danger zone.
(6) The speed of spooling up the winch should be even and the wire rope should be
wound onto the drum orderly.
(7) All crane movements should be carried out smoothly, and all safety precautions
should be obeyed, otherwise accident may occur.
For reference only.
Operators manual should be consulted and adhered to.