Functions And Description; Operating Principle; Warnings Against Hazardous Operations - Tractel blocfor B10 AES Instructions D'emploi

Functions and description

Recommendations for use (figure 1) :
• The blocfor™ automatic fall arrester is a retractable fall
arrester complying with standard EN 360. This equipment
must only be used by a person equipped with a fall arresting
harness (EN 361).
• The blocfor™ automatic fall arrester must only be used
for protection of personnel against falls when working at
heights.
• The blocfor™ automatic fall arrester must be secured to a
GB
structure (by its connector) with a strength S of at least 10 kN.
The retractable lanyard must be connected by its connector to
the dorsal anchor point on the fall arrest harness (Figure 1.b) .
• The Blocfor™ ESD 1.8 automatic fall arrester device can be
connected to the dorsal anchor point of the fall arrest body
harness and, in this configuration, the retractable lanyard
should be connected by its connector to a structure with
resistance R of 10 kN or more.
• The user must limit their movement in a cone of 20° around the
vertical anchor point (figure 1.c) .
• The blocfor™ automatic fall arrester must be protected to
prevent any products from getting into the housing (paint,
sand, mud, etc.).
• Operating limits (figure 1) .
• The blocfor™ automatic fall arrester has a working load limit
of 100 kg.
• Operating temperature limits:
-35°C to 50°C for a blocfor™ automatic fall arrester with
synthetic wire rope or strap.
-35°C to 60°C for the stainless steel and steel wire rope a
blocfor™ automatic fall arrester.
Horizontal use
The Blocfor™ 10 AES, Blocfor™ 5 ESD and ESD Blocfor™
6ESD automatic fall arrester devices were tested in horizontal
use following the European instruction CNB/P/11.060 of
November 2009 according to the type A on a min. edge radius
of 0.5 mm: see technical specification table above.
The Blocfor™ 1.8 ESD automatic fall arrester has been tested
according to TRACTEL
notified body APAVE SUDEUROPE SAS - BP 193-13322
Marseilles - France: see technical specification table above.
Before using the blocfor™ automatic fall arrester, perform
the following checks (figure 1.d and 1.f) :
- If the edge is considered to be sharp or if there are burrs,
take all necessary measures to avoid falling over the edge or
set up a protection on the edge. The edge radius (R Min)
must conform with the technical specification table above
(figure f.bis) .
- Check that the blocfor™ automatic fall arrester anchor point is
located at the same height or above the edge.
- Check that the angle formed by the lanyard in contact with
the edge, in the event of a fall, is less than 90° (figure f bis) .
- The distance between the anchor point of the Blocfor™
automatic fall arrester device and the edge (L min) must
conform with the technical specifications in table above
(figure f) .
- To reduce the risk of swinging, the movement of the user is
limited to a maximum distance of lateral displacement
perpendicular to the edge (Max M) which must conform with
the technical specification table above (figure 1.d) .
- Check that there are no obstacles along the swinging path in
the event of a fall.
- Check that a specific rescue plan has been set up in the event
of a fall.
Note: the blocfor™ automatic fall arrester in horizontal use
has not been tested in combination with a lifeline compliant with
EN 795 Class C.
Automatic fall arrester with metal cable or synthetic rope:
For use of a blocfor™ automatic fall arrester devices horizon -
8
® specifications and approved by the
tally, a 2 m long, 27 mm wide strap lanyard ref. 035032
(figure 1.f) must be used between the wire rope end connector
of the device and the user fall arrest harness.
When the blocfor™ automatic fall arrester is used horizontally,
make sure that a fall will be arrested on the strap lanyard
(length 2 m) when working on a terrace roof.
A blocfor™ automatic fall arrester can be used without lanyard
on a tubular structure with a diameter of over 45 mm (figure 1.e) .
Automatic fall arrester with synthetic strap:
For use of a strap-type a blocfor™ automatic fall arrester
horizontally, it is not necessary to fit a 27 mm-wide lanyard
between the end connector of the device and the user fall
arrest harness.

Operating principle

blocfor™ automatic fall arrester AES:
In the event of a fall, the mechanism inside the blocfor™
automatic fall arrester gradually locks using a disk brake
system, and the fall is stopped smoothly with a fall value less
than 6 kN. When the user is climbing or descending, the lanyard
is maintained tensioned by the return spring.
In addition, the blocfor™ automatic fall arrester AES device is
equipped with a patented safety system which ensures that a
user's fall will be safely arrested, even if the fall occurs when the
wire rope is entirely extended from the blocfor™ automatic
fall arrester AES device.
blocfor™ automatic fall arrester ESD:
In the event of a fall, the mechanism located inside the blocfor™
automatic fall arrester instantaneously locks by means of a
ratchet system and the fall is stopped gently by a tear-type
energy absorber with a stop value of less than 6 kN. When
climbing and/or descending, the lanyard user is maintained
tensioned by the return spring.
In addition, the blocfor™ automatic fall arrester ESD device is
equipped with a safety system which ensures that the user is
stopped under safe conditions, even if the fall occurs when
the strap is entirely extended outside the blocfor™ automatic
fall arrester ESD unit.
Clearance
The air clearance H (figure 1.g) is the free space under the feet
of the user. It is defined by the formula:
H = 3 m + Hp
which breaks down as follows:
3 m = height of fall with the Blocfor™ automatic fall arrester:
2 metres + 1 meter security.
Hp = maximum deflection of the anchor point defined in the
instructions for use of the anchor point.
Warnings against hazardous
operations
Figure 2.
It is prohibited:
• to install or use the blocfor™ automatic fall arrester without first
having been authorised, trained and recognised to be qualified
in the use of the device, or otherwise, without the supervision
of an authorised technician, trained and recognised to be
qualified in use of the device.
• to use the blocfor™ automatic fall arrester if any of the
markings are not legible.
• to install or use the blocfor™ automatic fall arrester without first
having carried out the preliminary checks.
• to use a blocfor™ automatic fall arrester which has not been
covered by a periodic inspection over the past 12 months by a
technician having authorised re-use in writing.
• to connect the blocfor™ automatic fall arrester to a point which
has not been covered by a periodic inspection over the past