Manitowoc GROVE GMK5150L, Operating Manual

Page: 975 / 1040

Malfunctions during crane operation
14.5 Emergency operations and programs
Operating manual 3 302 709 en 14 - 37
GMK5150L
1
2
.0
1.
201
8
•
Retract the telescopic section slowly and as
far as possible;
à
Locking points for the tele-
scopic sections
, p. 14 - 40.
•
Extend to about 25 mm (1 in).
•
Select and confirm the symbol ( 2 ).
The telescopic section is locked – display
symbol (
3 ), locking pin ( 1 ) green .
•
Set down the telescopic section, retracting it
as far as it will go.
Unlocking the telescoping cylinder
If the telescopic section ( 1 ) is locked, you can now unlock the telescoping
cylinder.
•
Select and confirm the symbol ( 1 ).
The telescoping cylinder is unlocked –
display symbol (
3 ), locking pin ( 2 ) red .
You can now move the telescoping cylinder
into the next telescopic section;
à
Locking
points for the telescoping cylinder
, p. 14 - 39.
s
G
Risk of accidents from sudden retraction of a telescopic section
You can select and confirm the symbol for unlocking the telescoping cylin-
der
only a maximum of 2 times . If this does not start the unlocking proce-
dure, contact
Manitowoc Crane Care
.