Malfunctions In The Telescoping Mechanism - Manitowoc Grove GMK4100L-1 Operating Manual

14.4.6
Malfunction
Telescoping mechanism
not working or
malfunctioning
Extending function not
working
Retracting function not
working
Telescoping function not
working
Telescoping not possible
or only possible at very
low speed
Operating manual
GMK4100L-1

Malfunctions in the telescoping mechanism

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