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© 2019 MSA
P/N 10112822
ENGLISH
INSTRUCTIONS FOR USE
The MSA Gravity Sure-Line horizontal lifeline system is a anchor device with an anchor point for systems of personal fall protection equipment, preventing the user from falling from a height in
accordance with Regulation (EU) 2016/425. The product is a temporary anchor device according to EN 795:2012 and to CEN/TS 16415:2013, intended for use by one or two workers. The anchor device
has a length adjustment device and will be delivered in two lengths: p/n 10110164 - max. 18,3 m , p/n 10119692 - max. 10,7 m.
1. Function and Application: The MSA Gravity Sure-Line Horizontal Lifeline System consists of: nylon kernmantle line, line tensioner, energy absorber, steel anchorage slings (optional), carabiners
(optional), Bypass shuttles and storage bag (Fig 2). The MSA Gravity Sure-Line Horizontal Lifeline System is a temporary light weight synthetic system that is suspended between two approved
anchorage points to provide worker fall protection during horizontal movement. Applications include buildings, bridges, transmission towers, scaffolds and other elevated work stations.
The MSA Gravity Sure-Line System is easily and quickly installed at temporary work areas. Line tension and adjustment is achieved using the line tensioner. An integral synthetic energy absorber
substantially reduces the maximum arrest load acting on the anchorages which prevents damage to the system and provides a visual warning that the system has previously sustained a load equivalent
to the force of arresting a fall.
2. Operating Instructions: It is the responsibility of the user of MSA Gravity Sure-Line Horizontal Lifeline System to assure that they are made familiar with these User Instructions and trained by a
competent person. Ensure that you have been adequately trained in the use of this MSA Gravity Sure-Line Horizontal Lifeline System and make sure that you fully understand how it works.
3. Operating Procedure: (1) Installers shall ensure the suitability of base materials into which structural anchor devices are fixed. Wrap steel anchorage sling around one support structure at least twice.
Connect both anchor sling eyes to energy absorber with carabiner as shown in Fig 2. To unlock carabiner gate twist sleeve 1/4 turn clockwise with thumb and forefinger and hold while depressing
gate. Carabiner will automatically lock when released. Note: Anchor slings might not be required. Carabiner can be connected directly to an approved anchor eye (Fig 13). (2) Move storage bag with
remainder of line to opposite support structure. Wrap the second anchorage sling around support as before at the same height above the working surface. Connect both anchor sling eyes to line
tensioner eye with carabiner. (3) Pull line through the line tensioner by hand until the slack has been removed (Fig 14). Tighten the line tensioner nut clockwise (direction of arrow stamped on tensioner)
until tensioner wheel slips with wrench or connecting bar (Fig 15). Note: The torque wrench method is preferred especially when the line is typically installed over the same span. This precaution will
help minimize rope wear at the line tensioner wheel. (4) After tensioning the system, push unfastening lever against tensioner to prevent unintentional loosening of the horizontal line during use (Fig 16).
(5) Attach fall arrest system to lanyard bypass shuttle on line. (6) Check system before use: Inspect lanyard and harness in accordance with manufacturers instructions. Inspect MSA Gravity Sure-Line
Horizontal Lifeline System in accordance with inspection guidelines. Ensure carabiners are orientated to safely accept a load and properly closed and locked. Avoid cross-gate loading and loading
with gate partially open (Fig 18). Check that unfastening lever is pushed against body of line tensioner. Ensure that energy absorber has not been partially expended (see inspection guidelines). (7)
Removal: To remove the MSA Gravity Sure-Line Horizontal Lifeline System, connect to alternate fall arrest system. Release tension by raising unfastening lever (Fig 17). Disconnect carabiners and
store system in storage bag.
4. Inspection Guidelines: (1) All hardware elements for cracks, sharp edges, deformation, corrosion, chemical attack, excessive heating or excessive wear. (2) Inspect steel anchor slings for severe
kinking, missing thimbles, broken strands, or damaged or defective swages. (3) Inspect carabiners for poor gate operation and obvious deformation. (4) Inspect line tensioner for correct operation,
broken or missing rivets, and loose or missing nuts. (5) Inspect synthetic elements for fraying, abrasion, discoloration, damaged stitching, stiffness, melting, chemical attack or excessive soiling. (6)
Inspect entire length of line for knotting, cuts, broken fibre bundles, excessive abrasion (especially at the site of the line tensioner), cracked, damaged or missing swages or thimbles. Damaged rope
can fail at much lower forces than expected. Deterioration and weakening of webbing can be suspected if exposed to chemicals, acids, petroleum based products, excessive sunlight, excessive heat
or repeated dampness. Inspect aluminum swage termination and shrink seal to ensure they are present on the tail end of the line. (7) Inspect energy absorber for elongation (indicates excessive force
applied). (8) If label is missing or illegible. (9) Detailed inspections must be recorded in the Inspection Checklist. After inspection, mark or punch out the inspection tag to indicate a complete formal
inspection was completed.
5. Design Statements: (1) An approved personal energy absorber to EN 355 and full body harness to EN 361 is mandatory in the fall arrest system. Approved personal energy absorbers include the
following for use with MSA Gravity Sure-Line: MSA energy absorbing lanyards approved to EN 355, and retractable type fall arresters V-TEC Mini PFL and V-SHOCK 1.8m Mini PFL, approved to
EN 360.
(2) The MSA Gravity Sure-Line Horizontal Lifeline System can accommodate two workers or up to 272 kg simultaneously over a maximum allowable span of 18.3 m. Anchorage arrest load will not
exceed 11.0 KN when used in accordance to these instructions.
(3) Allowing a 2:1 safety factor, end anchorages must be capable of sustaining a force of 22 KN without deformation in directions permitted by the system and must be certified by an engineer in writing.
(4) To reduce total fall distance place anchorages at the same level and above workers harness attachment point.
(5) Ensure line is free of unauthorized knots. Knots will reduce rope strength considerably.
(6) The line tensioner limits the amount of pre-tensioning in the line (max 1.6-1.8 KN). Over-tensioning the line could initiate tear-out of energy absorber or, in the event of a fall overload end anchors.
(7) Avoid turning the line tensioner nut after slippage. This causes the line tensioner wheel to rub against the stationary rope which is under tension. This can cause significant rope abrasion especially
if the Gravity Sure-Line System is continually installed on the same span. It is preferable to use the torque wrench method for tensioning to eliminate slippage and rope abrasion.
(8) Inspect the rope more carefully where the line tensioner has been used. If abrasion becomes excessive in one area, add (a) carabiner(s) to one end of the system to change where the tensioner
wheel rubs against the rope (maximum 2 carabiners). If abrasion is still occurring, use torque wrench method or return the system to the manufacturer to shorten line at eye termination.
(9) Vertical force applied to the line may be indicated by elongation of the energy absorber. Bearing point length will indicate elongation (See figure 19). In more extreme cases, the red ends of tear-ply
webbing will be exposed from under the black shrink seal. It is difficult to determine how much energy absorption remains in a partially deployed unit. Tag do not use and return system to manufacturer
for replacement of energy absorber.
(10) Synthetic horizontal lifeline systems absorb the force of a fall through the energy absorbers, personal energy absorber lanyard, and elongation of the line. Total fall distance will increase as the line
span increases and if a second worker is added to the system. Refer to manual for the minimum clearance required between the level of the line and the highest obstacle below the system. Minimum
clearance (MC) = Dynamic deflection (A) + Arrest distance (H) + Height of worker (D) + Safety margin (E) (1000 mm) (Fig 20). For energy absorbing lanyard, the calculation shall be MC = 3.6+3.75+2+1
= 10.35 m. For retractable type fall arrester, the calculation shall be: MC = 3.6+2+2+1 = 8.6 m. Consideration MUST be given to the necessary minimum clearance below the user to prevent a collision
with the structure or the ground.
(11) Maximum bearing point length of system is measured from carabiner load bearing points. Allowance is made for 40.6 cm of line beyond line tensioner for tensioning (See figure 1).
(12) Chemical hazards, heat, corrosion, sharp edges, cutting, abrasion, electrical hazards, UV degradation, other climatic conditions and pendulum falls may damage the MSA Gravity Sure-Line
System. More frequent inspections are required in these environments. Do not use in environments with temperatures lower than -30°C and greater than 50°C. Use caution when working near electrical
hazards, moving machinery, sharp edges and abrasive surfaces.
(13) The user must have a rescue plan and the means at hand to implement it; and that plan must take into account the equipment and special training necessary to effect prompt rescue under all
foreseeable conditions.
(14) All components (e.g. full body harness, energy absorber lanyard, carabiner, snap hook, etc.) connected to this MSA Gravity Sure-Line System MUST be compatible. MSA Gravity Sure-Line System
is designed to be used with MSA approved components and connecting subsystems. MSA Gravity Sure-Line MUST NOT be combined with retractable type fall arresters that have not been tested
and approved for compatibility with the system and listed in this manual in Design Statements section 5. Use of the MSA Gravity Sure-Line System subassembly with products made by others that
are not approved in writing by MSA or included in this manual may adversely affect the functional capability between system components and reliability of the complete system. Contact MSA with any
questions or for further information.
(15) Good medical fitness of the user is necessary in order to carry out work at a height. Certain medical conditions can threaten the users’ safety during normal use of MSA Gravity Sure-Line System
and in emergencies (taking medications, cardiovascular problem, etc.). In any case of doubt, consult your physician before using. Pregnant women and minors MUST NEVER use the MSA Gravity
Sure-Line System.
WARNINGS
A full body harness to EN 361 is the only acceptable body holding device that can be used in a fall arrest system.
A fall arrest system, MUST ONLY be connected to the harness back D-ring or front D-ring only with the fall arrest attachment tag “A”. These points can also be used for connecting a rescue system.
Never use the hip D-ring for fall arrest or climbing protection. The hip D-ring of a harness MUST ONLY be used for connecting a work positioning system (EN 358) and NEVER a fall arrest system or
climbing protection. Only steel carabiner to EN 362 approved to minimum 22 KN is the acceptable component that can be used.
ENGLISH
