Malfunctions during crane operation
14.4 Finding and eliminating malfunctions
Operating Manual GMK6300L 3 112 xxx en 14 - 21
xx.xx.xxxx
14.4.8 Malfunctions in the slewing gear
Malfunction Cause Remedy
Slewing gear not functioning Slewing gear off, lamp in
button lights up dimly
Switch on the slewing gear;
à p. 11 - 97
Houselock switched on
à Switching the houselock
on/off
, p. 11 - 15
Turntable locked
à p. 11 - 14
Dead man's switch system
not actuated.
Press dead man's switch
Emergency stop switch
engaged
à Resetting the emergency stop
switch
, p. 4 - 24
Fuses F1/1, F1/2, F3/1, F3/2, F3/
5, F3/6 blown
Replace the blown fuse;
à p. 14 - 5
Fuse blown on circuit board Replace the blown fuse;
à p. 14 - 7
Control unit faulty, error
message is displayed
Acknowledge error message
once;
à p. 14 - 36 – if
error persists, notify
Manitowoc Crane Care
Fuse RCL F6 faulty Replace the blown fuse;
à p. 14 - 12
Fuse F3/3 blown Replace the blown fuse;
à p. 14 - 9
In the
Slewing gear submenu,
the symbol
Auxiliary hoist lock
display
lights up.
Mechanically lock the
auxiliary hoist correctly;
à Extending the locking
cylinders
, p. 6 - 99
Slewing function not working Enter RCL code for the
0° to the
rear
position
Enter RCL code for a slewing
range
Counterweight lifting cylinder
not fully retracted
Fully retract lifting cylinder;
à p. 12 - 76
Function disabled by ECOS If necessary, acknowledge
error once and briefly turn off
the ignition – if error persists,
notify Manitowoc Crane Care
s