Malfunctions during crane operation
14.4 Finding and eliminating malfunctions
Operating Instructions GMK5250L 3 302 633 en 14 - 13
27.09.2017
14.4 Finding and eliminating malfunctions
14.4.1 Malfunctions on the engine
H
Observe all specifications in the section Malfunctions on the engine;
à p. 7 - 17.
14.4.2 Malfunctions on the main hoist/auxiliary hoist
Malfunction Cause Remedy
Engine does not start –
Starter does not turn
Driving mode switched on Switch over to crane
operation;
à p. 9 - 1
Symbol is red Engine malfunction
Malfunction Cause Remedy
Main hoist not working or
malfunctioning
Hoist off, lamp in button lights
up dimly
à Switching on the main
hoist
, p. 10 - 76,
à Switching on the
auxiliary hoist
, p. 10 - 79
Dead man's switch not
actuated
Press dead man's switch
Emergency stop switch
engaged
à Resetting the emergency
stop switch
, p. 4 - 22
Fuse is blown Replace blown fuse;
à p. 14 - 63
Fuse blown on circuit board Replace blown fuse;
à p. 14 - 63
Control unit faulty, error
message is displayed
Acknowledge error mes-
sage once;
à p. 14 - 3 –
if error persists, notify
Manitowoc Crane Care
Only the lifting function
works
Lowering limit switch
approached
Leave the shutdown
range and lift the main
hoist
s
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