Malfunctions during crane operation
14.4 Finding and eliminating malfunctions
14 - 14 3 302 633 en Operating Instructions GMK5250L
27.09.2017
14.4.3 Malfunctions in the hoist cameras
Only the lowering func-
tion works
Lifting limit switch
approached, lamp lights up
Leave the shutdown
range and lower the main
hoist
RCL shutdown, lamp lights up Leave the shutdown
range;
à p. 10 - 58
Fuse is blown Replace blown fuse;
à p. 14 - 63
Lifting, lowering or high-
speed mode function not
working
Function disabled by CCS If necessary, acknowledge
error once and briefly
turn off the ignition – if
error persists, notify
Manitowoc Crane Care
No lifting function Fuse is blown Replace blown fuse;
à p. 14 - 63
Lifting or lowering is
either not possible at all
or only at a low speed
Speed limited Increase limit;
à p. 10 - 123
Lifting or lowering func-
tion cannot be deacti-
vated
CCS malfunction Emergency stop switch;
à p. 14 - 1
No response to control
lever movements
CCS malfunction for operat-
ing elements in the crane cab
Unrig using hand-held
control;
à p. 14 - 41
Malfunction Cause Remedy
Malfunction Cause Remedy
No image appears on the
monitor after it is switched
on.
Fuse on the crane cab blown Replace the blown fuse;
à p. 14 - 63.
Fuse blown – in camera or
monitor.
Check fuses and replace as
necessary;
à Manufacturer’s
operating manual
.
Connection between camera
and monitor is disconnected.
Check cable connection and
notify
Manitowoc Crane Care if
necessary.
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