Malfunctions during crane operation
14.4 Troubleshooting
Operating manual GMK 6400
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14 - 13
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14.4.2
Malfunctions on the main hoist/auxiliary hoist
Malfunction
Cause
Solution
Main hoist not working or
malfunctioning
Hoist off, lamp in button lights
up dimly
Dead man's switch not actu-
ated
Press dead man's switch
Emergency stop switch on
Fuses F1/1, F3/1, F3/2, F3/5,
F3/6 blown
Replace blown fuse;
Fuse blown on circuit board
Replace blown fuse;
Control unit faulty, error mes-
sage is displayed
Acknowledge error message
once;
persists, notify
Manitowoc
Crane Care
Fuse F3/7 blown
Replace blown fuse;
Only the lifting function
works
Lowering limit switch
approached
Leave the shutdown range
and lift the main hoist
Only the lowering function
works
Lifting limit switch
approached, lamp
#
lights up
Leave the shutdown range
and lower the main hoist
RCL shutdown, lamp
+
lights
up
Leave the shutdown range;
Fuse F3/3 blown
Replace blown fuse;
Lifting, lowering or high-
speed mode function not
working
Function disabled by ECOS
If necessary, acknowledge
error once and briefly turn off
the ignition – if error persists,
notify
Manitowoc Crane Care
No Lifting function
Fuse RCL F6 blown
Replace blown fuse;
Fuse F3/3 blown
Replace blown fuse;
Lifting or lowering is either
not possible at all or only at a
low speed
Speed limited
Increase limit;
Lifting or lowering function
cannot be switched off
ECOS malfunction
Actuate emergency stop
switch;
No response to control lever
movements
ECOS malfunction concerning
operating elements in the
crane cab
Unrig using hand-held con-
trol;
Summary of Contents for GROVE GMK 6400
Page 1: ...3 112 993 en 12 07 2013 Operating manual Part 1 Driving ...
Page 9: ...Correction sheet GMK6400 3 302 804 en 7 27 08 2018 Hook tackle Reeving A 1x ...
Page 10: ...27 08 2018 8 3 302 804 en Correction sheet GMK6400 Blank page ...
Page 12: ...06 06 2014 2 3 113 115 en Correction sheet GMK6400 Blank page ...
Page 18: ...22 01 2014 6 3 113 060 en Additional page GMK6400 Blank page ...
Page 26: ...3 112 993 en Operating manual GMK 6400 12 07 2013 Blank page ...
Page 28: ...3 112 993 en Operating manual GMK 6400 12 07 2013 ...
Page 32: ...Overview 1 4 Terms used 1 4 3 112 993 en Operating manual GMK 6400 12 07 2013 1 4 Terms used ...
Page 34: ...Overview 1 4 Terms used 1 6 3 112 993 en Operating manual GMK 6400 12 07 2013 Blank page ...
Page 64: ...3 112 993 en Operating manual GMK 6400 12 07 2013 ...
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Page 383: ...Operating manual GMK 6400 3 112 993 en 12 07 2013 8 8 Index ...
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Page 386: ...Index 8 2 3 112 993 en Operating manual GMK 6400 12 07 2013 Blank page ...
Page 404: ...Index 8 20 3 112 993 en Operating manual GMK 6400 12 07 2013 ...
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Page 407: ...3 112 993 en 12 07 2013 Operating manual Part 2 Crane operation ...
Page 415: ...Correction sheet GMK6400 3 302 804 en 7 27 08 2018 Hook tackle Reeving A 1x ...
Page 416: ...27 08 2018 8 3 302 804 en Correction sheet GMK6400 Blank page ...
Page 418: ...06 06 2014 2 3 113 115 en Correction sheet GMK6400 Blank page ...
Page 424: ...22 01 2014 6 3 113 060 en Additional page GMK6400 Blank page ...
Page 432: ...3 112 993 en Operating manual GMK 6400 12 07 2013 Blank page ...
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Page 937: ...Operating manual GMK 6400 3 112 993 en 12 07 2013 15 15 Index ...
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