Manitowoc GROVE GMK 6400 User Manual

Malfunctions during crane operation
14.4 Troubleshooting
Operating manual GMK 6400 3 112 993 en 14 - 19
12.07.2013
14.4.7 Malfunctions in the slewing gear
Malfunction Cause Solution
Slewing gear not functioning Slewing gear off, lamp in
button lights up dimly
Switch on the slewing gear;
à p. 11 - 99
Houselock switched on
à Switching the houselock on/
off
, p. 11 - 15
Dead man's switch system
not engaged.
Press dead man's switch
Emergency stop switch on
à Resetting the emergency stop
switch
, p. 4 - 26
Fuses F1/1, F1/2, F3/1,
F3/2, F3/5, F3/6 blown
Replace blown fuse;
à p. 14 - 5
Fuse blown on circuit board Replace blown fuse;
à p. 14 - 7
Control unit faulty, error mes-
sage is displayed
Acknowledge error message
once;
à p. 14 - 32 – if error
persists, notify Manitowoc
Crane Care
Fuse RCL F6 blown Replace blown fuse;
à p. 14 - 11
Fuse F3/3 blown Replace blown fuse;
à p. 14 - 9
Slewing function not working Enter RCL code for the
0° to the
rear position
Enter RCL code for a slewing
range
Function disabled by ECOS If necessary, acknowledge
error once and briefly turn off
the ignition – if error persists,
notify Manitowoc Crane Care
Slewing only possible in one
direction
Shutdown angle of a limited
slewing range reached (addi-
tional equipment).
Enter the RCL code for a slew-
ing range of 360° or slew in
the opposite direction to leave
the shutdown angle
Slewing not possible or only
at low speed
Speed limited Increase limit;
à p. 11 - 107
Slewing cannot be switched
off
ECOS malfunction Emergency stop switch;
à p. 14 - 1
No response to control lever
movements
ECOS malfunction concerning
operating elements in the
crane cab
Unrig using hand-held con-
trol;
à p. 14 - 55

Manitowoc GROVE GMK 6400 Specifications

General

Brand	Manitowoc
Model	GROVE GMK 6400
Category	Construction Equipment
Language	English