9
6 JACK INSTALLATION
! WARNING
ALWAYS
before installation check up thoroughly whether the jack is not damaged.
NEWER
the weight of the jacked up structure or resulting pushing (pulling) force on
the rack bar have to exceed the safe working load of the jack.
The NEXP product must be installed in such a way as to prevent creeping charges.
Charging mechanisms stronger than manual friction must be avoided at the installation site
.
A NEXP product when used in a mine or other environment where the product could
collide with falling, flying… objects (rock, stones…) must be protected to minimize the
likelihood of a collision (sufficiently dimensioned cover, …).
6.1
ANCHORAGE
TO
A
STRUCTURE
6.1.1 Product design – CON-W:
Two grips on the coating with holes for screws M12 (2,5t load capacity) or M16
(5t ,10t load capacity) and holes at the ridge bar ends with
∅
25 mm (2,5t load
capacity) or
∅
30 mm (5t,10t load capacity) serve for mounting to a structure.
6.1.2 Product design – CON:
The manufacturer of the equipment, in which the jack will be used, specifies the
assembly method for the structure. The jack anchorage to the equipment as a
rule represents an intervention to the jack design (e.g. welding very grip,
mounting of other parts on the jack).
! NOTICE
Any guarantee does not apply to the jack modified according to Article 6.1.2,
unless the modification type is negotiated and approved by the manufacturer.
ALWAYS we
recommend consulting a technical department of the jack manufacturer
the type of intended modification.
6.1.3 Installation of jack with respect to rack load.
When installing the – CON and – CON-W rack jacks it is essential to assure that
the load on the jack is in the right direction.
The pressure (tension) load on the
rack must always act in the direction from the handle hub to the catches (see
diagram), and never the other way round.
Q
T
– tensile load
Q
D
– pressure load
