Manitowoc GROVE GMK4090 User Manual

Malfunctions during crane operation
14.4 Troubleshooting
14 - 18 3 302 736 en Operating manual
GMK4090
xx.xx.xxxx
14.4.7 Malfunctions on the slewing gear
Operation with the
teleautomation menus is
blocked
Diverse errors, e.g. length
indicator failed
Retract main boom with
the emergency program;
à p. 14 - 31
The main boom can no
longer be telescoped; the
telescoping cylinder can
no longer be moved
The hydraulic supply is inter-
rupted
Inform
Manitowoc Crane
Care
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 Solution
Malfunction Cause Solution
Slewing gear not func-
tioning
Slewing gear off, lamp in
button lights up dimly
Switch on the slewing
gear;
à p. 11 - 114
Superstructure locked Unlock superstructure;
à p. 11 - 14
Dead man's switch system
not engaged.
Press 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
Enter RCL code for 0° to the
rear
position
Enter RCL code for a slew-
ing range
Slewing function not
working
Enter RCL code for
0° to the
rear
position or 180° to the front
position.
Confirm rigging mode for
a slewing range
Function disabled by CCS If required, acknowledge
error message once and
briefly turn off the ignition
– it if occurs again, notify
Manitowoc Crane Care

Manitowoc GROVE GMK4090 Specifications

General

Brand	Manitowoc
Model	GROVE GMK4090
Category	Construction Equipment
Language	English