Malfunctions On The Slewing Gear - Manitowoc Grove GMK4100L-1 Operating Manual

Malfunctions during crane operation
14.4 Troubleshooting
Malfunction
Telescoping cannot be
switched off
Operation with the
teleautomation menus
is blocked
The main boom can no
longer be telescoped; the
telescoping cylinder can
no longer be moved
No response to control
lever movements
14.4.7
Malfunction
Slewing gear not func-
tioning
Slewing function not
working
14 - 18
Malfunction in crane control
Diverse errors, e.g. length
indicator failed
The hydraulic supply is inter-
rupted
CCS malfunction for operat-
ing elements in the crane cab

Malfunctions on the slewing gear

Slewing gear off, lamp in
button lights up dimly
Superstructure locked
Dead man's switch not
actuated.
Emergency stop switch on
Control unit fuse blown
Control unit faulty, error
message is displayed
Enter RCL code for 0° to the
rear position
Enter RCL code for 0° to the
rear position or 180° to the front
position.
Function disabled by CCS
Cause
Cause
3 302 690 en
Solution
Emergency stop switch;
à
p. 10 - 12
Retract main boom with
the emergency program;
à
p. 14 - 31
Inform
Manitowoc Crane
Care
Unrig using hand-held
à
control; p. 14 - 45
Solution
Switch on the slewing
à
gear; p. 11 - 116
Unlock superstructure;
à
p. 11 - 15
Press dead man's switch
à
Resetting the emergency
stop switch , p. 4 - 19
Replace the blown fuse;
à
p. 14 - 73
Acknowledge error mes-
à
sage once; p. 14 - 7 – if
error persists, notify
Manitowoc Crane Care
Enter RCL code for a slew-
ing range
Confirm rigging mode for
a slewing range
If required, acknowledge
error message once and
briefly turn off the ignition
– it if occurs again, notify
Manitowoc Crane Care
Operating manual
GMK4100L-1