Manitowoc Grove GMK4090 Operating Manual page 642

Crane operation
11.5 Crane operation with main boom
Telescoping
Telescoping
sequence
11 - 94
The position of the telescopic sections, i.e. which telescopic section is
extended to what extent, is referred to as telescoping.
The CCS display shows main boom fixed lengths and main boom interme-
diate/telescoping lengths in different ways.
The telescopic sections can only be telescoped individually, one after the
other.
When extending, the telescopic section ( I to V ) with the highest number
must always be extended first, then the telescopic section with the next
lower number and so on (for example, IV, III , II , I ).
The telescopic sections are always retracted in the reverse order of
extending.
Fixed lengths
Telescopic section I to V 0 - 50 - 92 - 100
(A) – The locking pins (1) are green.
Intermediate lengths/telescoping lengths
(B) – The locking pins (1) are black.
or
(C) – The locking pins (1) are flashing.
Telescopic section at fixed length
and
– unlocked or
– locked and not set down.
3 302 736 en Operating manual
GMK4090