Free Fall Distance, Total Fall Distance, And System Elongation - MSA R512539 Instructions D'utilisation

Use
Condition
Wet
Dry
3.5

Free Fall Distance, Total Fall Distance, and System Elongation

Use ONLY an MSA integral or separate shock absorbing lanyard to connect the fall arrester to the
dorsal D-ring of the harness. The length of the lanyard must comply with applicable agency stan-
dards as defined in Section 1.2.1 of this User Instruction manual. Misuse can result in death or
serious injury. Consider the elongation of the fall arrester when determining the adequate clearance
to obstructions or grade in the event of a fall; otherwise, the clearance may be insufficient, resulting
in death or serious injury.
US
1
Fig. 3 Fall Arrester (Rope Grab) with Lanyard and Shock Absorber
1 Rope Grab Assembly
2 Web Lanyard
Do not exceed free fall distance specified by applicable regulations and standards. To calculate the total fall
distance, sum the following:
2x length of the rope grab (found on label)
shock absorber extension (found on label)
stretch in rope at 1800 lbf
(found on label and in this user instruction)
3ft safety margin
Total Fall Distance
14
R512539 R512544
3.33% @ 2.30% @
900 lbf (4 kN) 900 lbf (4 kN)
3.33% @ 2.35% @
900 lbf (4 kN) 900 lbf (4 kN)
2
3
4
Rope Part Number
SRP9200 SRP9300
2.63% @ 2.63% @
900 lbf (4 kN) 900 lbf (4 kN)
2.13% @ 2.13% @
900 lbf (4 kN) 900 lbf (4 kN)
WARNING
3
Shock Absorber
Connector
Example:
2 x 36" = 72"
42" extension
30' rope x 0.0666 = 24"
36"
Total Fall Distance = 174" or 14.5ft
Rope Grab Subsystem
SRP7082 SRP120580
6.15% @ 1.50% @
900 lbf (4 kN) 900 lbf (4 kN)
5.40% @ 1.50% @
900 lbf (4 kN) 900 lbf (4 kN)
4