Furukawa Unic URW370C4U Series, Руководство по эксплуатации и техническому обслуживанию

Страница: 16 / 248

3-2
SAFETY PRECAUTIONS ON CRANE OPERATION
10
Operation with the crane kept
leaning makes it unstable when a
cargo is lifted up.
Such operation can cause the crane to be
overturned.
8
Make sure that the ground on which
outriggers are to be set up is solid and
firm.
When setting up the outriggers on an
unleveled ground or on a slope, be sure to
place a support (such as plank, steel plate
etc.) under the outrigger foot flanges to keep
the crane level.
In addition, when the crane is to be operated
on a soft ground, take the same measures to
prevent the outrigger foot flanges from sink-
ing into the ground when a cargo is lifted up.
9
Lift up the crawler by approx. 2in.
(50mm)from the ground.
11
In normal crane operation, be sure
to set up the crane level with the
outriggers fully extended.
12
Do not stand under or in front of the
hook when unhooking as it swings.
13
Do not try adjusting hydraulic
equipment.
During operation
1
Pay attention that the hook will not be
overwound.
Be sure to turn ON the “overwinding alarm
switch”.
• Remember that the hook is wound up
when boom is extending.
• If the hook hits against the boom top due
to overwinding of the hook, it may cause
damage to wire rope and the sheaves at the
boom top and may cause the fall of lifted
cargo.
2
Operate each lever slowly and smooth-
ly.
An abrupt lever operation with a cargo lifted
gives an excessive shock to the crane which
may cause damage or overturn to the crane.
3
Slew the crane at low speed.
Swing of a lifted cargo increases working
radius of the crane which may cause it to be
overloaded.
4
If the engine speed is too slow when
operating the crane, press the accelera-
tor to increase it.
Crane operation with the engine (and pump)
running at low speed may cause a cargo
hoisted up to swing due to pulsation of
the
engine.
This is not a malfunction but impairs smooth
control of the crane.
5
Overloaded operation is strictly prohib-
ited.
Crane operation with a load exceeding the
rated load hoisted may cause damage or over-
turn to the crane.
DANGER
BEFORE OPERATING THE CRANE
IT IS MANDATORY TO
OUTRIGGERS
SET UP ALL THE