Furukawa Unic URW376C4U -T Series, Operation & Maintenance Manual

Page: 55 / 156

9-19
DESCRIPTION OF EACH CONTROL DEVICE
• Indication of lamps for self-diagnosis when turn over prevention device
functions normally
Lamps Indication State
RUN Lighting
Turn over prevention device is functioning right.
ERR Lighting off
ch.D
ch.C
ch.B
ch.A
Quick blinking
It is in condition of overturn threshold as ground reaction force
against outriggers has been decreased, or outriggers have been
stored.
2 blinking at
a time
It is in condition of overturn prediction as ground reaction force
against outriggers has been decreased.
Lighting or slow
blinking Crane can be operated safely due to suf fi cient ground reaction
force against outriggers.
Lamps Indication State
RUN Lighting
Reaction force detector is in trouble.
ERR Quick blinking
ch.D
ch.C
ch.B
ch.A
Quick blinking Reaction force detector is in trouble.
Lighting Reaction force detector is working right.
• Indication of lamps for self-diagnosis when turn over prevention device
functions normally
◆
When reaction force detector is in trouble
◆
When control box of turn over prevention device is in trouble
All the lamps for self-diagnosis do not light.
In case where the crane cannot be operated because a trouble has been
occurred to the turn over prevention device while the crane is being oper-
ated, turn OFF the engine key once then start the engine again.
If the trouble fails to be solved, store the crane by following the steps
illustrated on page 9-20, “How to release when turn over prevention
device” is found to be out of order, then ask a UNIC authorized service
shop for repair.
CAUTION