Unic URW295CR - Overwinding Alarm System; Function of Overwinding Alarm; Overwinding Alarm Operation Procedures

1.1. Turn ON the overwinding alarm switch before starting
the crane operation.
If the alarm sounds while the hook is being hoisted or
the boom is being extended, stop the crane operation
immediately and lower the hook or retract the boom.
2. Turn the switch OFF after completion of the crane work.
(2) Procedures for operation
Overwinding alarm
ON
OFF
(23‑1)
23.1OVER WINDING ALARM
(1) Function of overwinding alarm
The device automatically makes an alarm sound to warn
that the wire rope is overwound when the hook comes
close to the boom top.
1． Function of overwinding alarm and procedures for operation
The overwinding alarm will not function even if the hook is under overwound condition with the
overwinding alarm switch turned OFF.
Be sure to turn the switch ON before starting crane work and check that the alarm sounds every
time when the weight for overwinding alarm is lifted up.
Since the length of wire rope hanging the weight is specified by laws and regulations con -
cerned, do not make it short at random.
The alarm will not sound if the wires(cords) connected to the overwinding detector at the boom
top is broken.
Pay attention to the wires(cords).
CAUTION
Cord reel
Overwinding
detector
Weight for
overwinding alarm
1. Turn ON the overwinding alarm switch before starting
the crane operation.
If the alarm sounds while the hook is being hoisted or
the boom is being extended, stop the crane operation
immediately and lower the hook or retract the boom.
2. Turn the switch OFF after completion of the crane work.
(2) Procedures for operation