ISC D4 Descensor Manual De Instrucciones página 13

if a second karabiner is used to add friction to the system, you must ensure that it is located away from
the main descender attachment point – see Fig I.
[O] Pick-off rescue: The descender is rated for 240kg which allows for a variety of rescue scenarios.
Additional friction can be added if required, but is not always necessary.
[P] Progress capture/Horizontal lines/Tyrolean: The descender can be used to capture the progress
of a rope at an anchor point of a horizontal line. With the handle in PRIMED position, the line can be
tensioned, using a tensioning pulley and a ropegrab (RP209/RED) or by hand, until the desired tension is
reached, at which point the handle should be moved to the PARK position. It must be backed up using a
suitable knot (e.g. Mule) with a suitable length of slack to allow slippage in the event of overloading the
system. In the event of a rescue, remove the knot and begin to lower.
Minimum approximate slip loads (to reduce impact forces):
D4 – 5kN*
D5 – 9kN*
*rope condition and/or size may affect these fi gures.
Extreme care must be taken when working with horizontal lines since it is possible to create
excessive forces and overloading of the rope, anchors, and hardware – specialist training and
knowledge is required to ensure that this type of system is rigged and operated safely.
When to retire your equipment
• If the descender is subjected to a load greater than the slip load, such as might be experienced in a
dynamic load event
• If the brass wear indicator in the top bobbin is visible
• It fails to pass inspection
• You do not know its full usage history
• If there is any doubt with the condition or reliability
• When it becomes obsolete due to changes in standards, legislation, technique or incompatibility with
other equipment
• If the rope path over the moving side frame has worn through completely.
Ensure the equipment is destroyed to prevent further use.
Legislation
The ISC descender is an EN12841:2006 Type C rope adjustment descender. The primary function of the
descender is progression along the working line. The descender must be used in conjunction with a Type
A backup descender (e.g. ISC RED) on a second rope (safety rope). The descender is not suitable for use
in an EN363 fall arrest system. Certifi cation testing was carried out at SATRA Technology Centre (NB0321)
and was performed using 240kg mass using Mammut Performance Static 10.5mm and BEAL Industrie
11.5mm ropes.
The descender must be used with an anchor point/system, located above the user, conforming with EN795
or in accordance with ANSI z359, or any other specifi c recognised International Standard or industry best
practice relating to the specifi c use, or a non-engineered anchor point capable of withstanding appropriate
loads.
To reduce the risk of a free fall, the rope between the rope adjuster and the anchor must always be taut.
Make sure that the anchor point is correctly positioned, in order to limit the risk and the length of a fall.
The anchor should be positioned such that the free movement of the system, and the fall path is
unobstructed. Work as closely to, directly below the anchorage point as is possible (maximum 30 from
vertical) to avoid swing-fall injury.
Notifi ed Body having carried out the CE type test (Art. 10): SATRA Technology Centre (0321),
Wyndham Way, Telford Way, Kettering, Northamptonshire, NN16 8SD. U.K.
Notifi ed body responsible for production monitoring and inspection (Art. 11B): SGS United
Kingdom Ltd (0120), Unit 202B, Worle Parkway, Weston Super Mare. S22 6WA. U.K.
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RP88X series: Issue A - Feb 2016