Singing rock SIR Manual Del Usuario página 16

m) The descender device should never be left in place (specifically
outdoors), e.g. at a workstation, because of the weathering deterio-
ration of the rope.
FUNCTIONING PRINCIPLES
Figure 1: INSTALLATION OF THE ROPE
To install the descender on the rope, press the opening button and
simultaneously slide the housing sides apart. The working end of
the rope exits the device close to the axle around which the housing
sides rotate (consult the sketch on the housing for help). Lead the
rope around the cam so that the free end of the rope exits the
device between both camming elements. Slide the housing sides
back together. The device is only closed properly once the opening
button locks the top housing side and is fully released. The SIR used
as a descender can either be attached to a harness concordant with
either EN 361, EN 813 or EN 12277 (fig. 4/ A – the operator slides with
the descender along the rope) or it can be fastened to an anchor (fig.
4/B – the rope slides through the non-moving descender).
WARNING: If the rope is not inserted correctly the locking mechanism
does not work!
Figure 2: FUNCTIONAL PRINCIPLES
Figure 3: OPERATIONAL CHECK
• Check that the sides of the housing cannot be slid apart and the
closing button is fully released (the device is closed correctly).
• Check whether the rope is inserted correctly (according to the
sketch on the housing).
• Before each use, carry out an operational check of the device by
test-loading it with your body weight while secured by other means.
• It is essential to assess the reliability and security of the entires
safety system you are relying on: adequate resistance of the
anchors (EN 795, ANSI/ ASSE Z359.1 or 18 kN) and the structure they
are fixed on, their correct (higher) positioning to arrest a fall and
prevent pendulum effects, correct positioning of the ropes – e.g.
protecting sharp edges or points of rubbing, preventing ill running
of the descender, redundancy, etc. – to tie a stopper knot at the free
end of the rope. Any overload or dynamic loading of the descender
may damage the rope.
Figure 4: DESCENT AND SHORT ASCENTS
While loading the system, the user should hold with one hand the free
end of the rope and with the other hand gradually pull the handle
(fig. 4/ A). This unblocks the rope and allows for a controlled descent.
The maximum permitted speed of descent is 2 m/s. By pulling the
handle down to its terminal position, the user will activate the des-
cender's second braking position (anti panic) and the descent will be
stopped instantly. To resume descending, just return the handle in the