Manitowoc GROVE GMK4090 User Manual

Malfunctions during crane operation
14.4 Troubleshooting
14 - 16 3 302 736 en Operating manual
GMK4090
xx.xx.xxxx
14.4.5 Malfunctions on the derricking gear
Malfunction Cause Solution
Derricking gear not work-
ing or malfunctions
Derricking gear off, lamp in
button lights up dimly
Switching on the derrick-
ing gear;
à p. 11 - 84
Dead man's switch not actu-
ated
Press the dead man's
switch.
Emergency stop switch on
à Emergency stop switch,
resetting
, p. 4 - 20
Control unit fuse blown Replace the blown fuse;
à p. 14 - 72
Control unit faulty, error mes-
sage is displayed
Acknowledge error mes-
sage once;
à p. 14 - 7 – if
error persists, notify
Manitowoc Crane Care
Lowering function not
working
Lifting limit switch
approached, lamp lights up
Leave the shutdown
range and lower the auxil-
iary hoist
RCL shutdown, lamp lights up Leave the shutdown
range;
à p. 11 - 56
Control unit fuse blown Replace the blown fuse;
à p. 14 - 72
Derricking function not
working
Function disabled by CCS If required, acknowledge
error message once and
briefly turn off the ignition
– it if occurs again, notify
Manitowoc Crane Care
Control unit fuse blown Replace the blown fuse;
à p. 14 - 72
Derricking not possible,
or only at low speed
Speed limited Increase limit;
à p. 11 - 123
Derricking cannot be
switched off
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

Manitowoc GROVE GMK4090 Specifications

General

Brand	Manitowoc
Model	GROVE GMK4090
Category	Construction Equipment
Language	English