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Malfunctions during crane operation
14.4 Troubleshooting
14 - 16
3 302 690 en
Operating manual
GMK4100L-1
2
3
.1
1.
201
7
14.4.5
Malfunctions on the derricking gear
Malfunction
Cause
Solution
Derricking gear not work-
ing or malfunctions
Derricking gear off, lamp in
button lights up dimly
Switching on the derrick-
ing gear;
Dead man's switch not
actuated
Press the dead man's
switch.
Emergency stop switch on
Control unit fuse blown
Replace the blown fuse;
Control unit faulty, error mes-
sage is displayed
Acknowledge error mes-
sage once;
error persists, notify
Manitowoc Crane Care
Lowering function not
working
Lifting limit switch
approached, lamp lights up
Leave the shutdown
range and lower the auxil-
iary hoist
RCL shutdown, lamp lights up
Leave the shutdown
range;
Control unit fuse blown
Replace the blown fuse;
Derricking function not
working
Function disabled by CCS
If required, acknowledge
error message once and
briefly turn off the ignition
– it if occurs again, notify
Manitowoc Crane Care
Control unit fuse blown
Replace the blown fuse;
Derricking not possible,
or only at low speed
Speed limited
Increase limit;
Derricking cannot be
switched off
CCS malfunction
Emergency stop switch;
No response to control
lever movements
CCS malfunction for operat-
ing elements in the crane cab
Unrig using hand-held
control;
Summary of Contents for Grove GMK 4100L-1
Page 1: ...Operating manual 3 302 690 en 23 11 2017 ...
Page 6: ...16 01 2018 2 3 302 710 en Additional pages GMK4100L 1 Overview of Driving menu I ...
Page 8: ...16 01 2018 4 3 302 710 en Additional pages GMK4100L 1 Blank page ...
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Page 65: ...Operating manual 3 302 690 en GMK4100L 1 23 11 2017 15 15 Index ...
Page 66: ...3 302 690 en Operating manual GMK4100L 1 23 11 2017 ...
Page 68: ...Overview 1 1 Accidents 1 2 3 302 690 en Operating manual GMK4100L 1 23 11 2017 Blank page ...
Page 72: ...Overview 1 4 Terms used 1 6 3 302 690 en Operating manual GMK4100L 1 23 11 2017 Blank page ...
Page 996: ...Index 15 2 3 302 690 en Operating manual GMK4100L 1 23 11 2017 Blank page ...
Page 1014: ...Index Operating manual 3 302 690 en 15 20 GMK4100L 1 23 11 2017 Blank page ...
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