Furukawa Unic URW370C4U Series, Руководство по эксплуатации и техническому обслуживанию

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9-2
DESCRIPTION OF EACH CONTROL DEVICE
Automatic stop for
overwinding
1.
◆
Function of automatic stop for
overwinding
Stop
(extending)
Restore
(retraction)
Stop
(raising)
Restore
(lowering)
Restore
(unwinding)
Stop
(winding-up)
• When resetting automatic
stop by lowering boom, pay
attention that the load will not
exceed the rated load.
• Since viscosity of hydraulic oil
increases during cold winter
or in low temperature environ-
ment, when “winding-up hook”
or “extending boom” is oper-
ated in high-speed, the crane
may not be stopped imme-
diately but with some delay
even if the hook hits against
the weight for overwinding
alarm which is not a disorder.
Operate the cane after temper-
ature of hydraulic oil rises to a
sufficient level by carrying out
warming-up or operate it with a
low speed while paying atten-
tion that the hook may not hit
against the weight.
If the hook comes close to the boom top and
it hits against the weight for overwinding
alarm, voice alarm sounds and functions of
winding-up hook, extending boom, and rais-
ing boom stop automatically.
When the automatic stop is activated, lower
the hook, retract or lower the boom until the
hook detaches from the weight for overwind-
ing alarm.
This allows the activated automatic stop to
return to be normal.
CAUTION