Manitowoc Grove GMK 4100L-1, Operating Manual

Page: 933 / 1016

Malfunctions during crane operation
14.4 Troubleshooting
Operating manual 3 302 690 en 14 - 17
GMK4100L-1
2
3
.1
1.
201
7
14.4.6
Malfunctions in the telescoping mechanism
Malfunction Cause Solution
Telescoping mechanism
not working or
malfunctioning Telescoping mechanism off,
lamp in button lights up dimly Switch on the telescoping
mechanism;
à
p. 11 - 89
Dead man's switch system
not actuated Press dead man's switch
Emergency stop switch on
à
Resetting the emergency
stop switch
, p. 4 - 19
Control unit fuse blown Replace the blown fuse;
à
p. 14 - 73
Control unit faulty, error
message is displayed Acknowledge error mes-
sage once;
à
p. 14 - 7 – if
error persists, notify
Manitowoc Crane Care
Extending function not
working Control unit fuse blown Replace the blown fuse;
à
p. 14 - 73
RCL shutdown, lamp lights up Leave the shutdown
range;
à
p. 11 - 58
Lifting limit switch
approached, lamp lights up Leave the shutdown
range, retract boom
Retracting function not
working Insufficient lubrication Lubricate main boom;
à
Maintenance manual
Main boom is not steep
enough Leave the shutdown
range and raise the boom
Telescoping function not
working Function disabled by CCS,
error message is displayed Acknowledge error mes-
sage once;
à
p. 14 - 7 – if
error persists, notify
Manitowoc Crane Care
The swing-away lattice is not
in position for telescoping
à
Lattice extension operat-
ing manual
Control unit fuse blown Replace the blown fuse;
à
p. 14 - 73
Telescoping not possible
or only possible at very
low speed Speed limited Increase limit;
à
p. 11 - 125
s