Lukas LS 330 Fi - Manual (Page 9)

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Description of the functions 4.
4.1 Description
The equipment is designed such that, via a hydraulically activated piston, two equal, opposite
blade arms are symmetrically opened / closed by mechanical joints, thereby spreading,
squeezing, pulling or cutting objects.
All cutters and combi tools ensure full load-holding function when disconnected from the
hydraulic supply (e. g. when being unintentional decoupled; defective hose, and so on).
The tools are protected by special handles, the special protection hose and protection box
for the couplings that protect the operator from power arcing.
4.2 Circuit diagram
To enable comprehension of the function, a simplified hydraulic cylinder of the rescue
equipment (A) + hand valve (B) are depicted here.
A B
cut / close / pulling /
squeezing
spreading /
opening
4.3 Control of working movements
The movement of the piston is controlled via the star grip for the fitted valve (see cover sheet
Item 1 and Figure 3 below).
star grip
Fig. 3