Portable Cable PCH1000 Guia Del Usuario página 25

CUT STRANDS :
A strand is made of one, two or more
groups of twisted yarn. Braided ropes
are typically 16-, 24- or 32-strand. They
can get cut by abrasion against sharp
edges or surfaces, or by cyclic tension
wear.
If three or more adjacent strands are cut,
the rope shall be retired.
REDUCED VOLUME :
The rope
can get
smaller
because of
abrasion
and cyclic
tension
wear. If the
rope
volume is
reduced
by 50%, the rope shall be retired. For a 12 mm diameter rope, that
means that a rope with a circumference of 19 mm (Ø6 mm). shall be
retired. Circumference measurement is easier than trying to measure
the diameter.
MELTED OR GLAZED FIBERS :
The friction of the rope on the capstan
drum generates heat. If the rope is
subject to high friction heat for a long
period - for example when the load is
greater than the winch capacity - it can
get damaged very quickly.
If the rope shows fused fibers, visibly
charred and melted fibers, yarns and/or
strands, is extremely stiff and is
unchanged by flexing, it shall be retired.
DISCOLORATION/DEGRADATION :
Chemical contamination can cause fused fibers, brittle fibers and
stiffness. Retire the rope.
INCONSISTENT DIAMETER :
Shock loading or broken internal strands
can cause flat areas or lumps and
bumps on the rope. Retire the rope.
IF YOU ARE IN DOUBT
OF THE ROPE FITNESS,
REPLACE THEROPE!
3.1.3 Recommendations
3.1.3.1 Pulling
1
For pulling loads, you have to attach the
load to the end of the rope. Even if a
simple knot can do the job, we recom-
mend the installation of a hook with the
bowline knot (Figure 1 on the right) be-
cause it can be easily undone if you
need to change the hook. Moreover, it
retains about 70% of the rope's capacity
while most
knots will reduce it by more than 50%.
Even better, the double bowline knot (Figure 2 below)
will keep about 75% of your rope's capacity.
2
3.2 Lifting - Rope with buried eyed splice
For lifting operation, you have to attach
the load to the end of the rope. Even if
you believe that a bowline knot could do
the job, it is
RECOMMENDED to use the Portable
Winch Co. rope with buried eyed splice
(see Figure). Rope and hardware (hook,
carabiner, shackle) must have an adequate safety factor for the load.
NOTE: Please, check with local authorities for safety regulations in
your area.
3.3 Winch anchors
OPTION 1 : In most cases, the winch is anchored to a fixed object
using the polyester sling or one of our optional anchors, and the rope
is attached to the object you want to move. The latter moves towards
the winch as the winch pulls the rope.
OPTION 2 : Sometimes, the winch can be anchored to the object you
want to move, and the rope is attached to a fixed object. The winch
and the object to be moved are then pulled towards the rope
anchorage point. This method is useful when you need to guide the
load while operating the winch. Your winch is supplied with a 2 meter
polyester sling. To anchor the winch, go around the anchor point with
the sling. Insert each end of the sling into each of the two safety hooks
located at the back of the winch (fig. 1)
1
2
Position the winch in line with the load. When the winch is under
tension, it will try to align itself with the load. The friction of the sling
STRONGLY
.
EN
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