3M Nano-Lok WrapBack, Instruction Manual

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13
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Before using this equipment, record the product identification information from the ID label in the ‘Inspection and
Maintenance Log’ at the back of this manual.
DESCRIPTION:
Figure 2 identifies key components of the 3M™ DBI-SALA® Nano-Lok Wrap Back Self-Retracting Devices (SRD). Nano-Lok
Wrap Back SRDs are Wrap Back webbing lifelines (J) that retract into a Nylon Housing (H). Nano-Lok Wrap Back SRDs include
an integral Energy Absorber (I). A Harness Interface (G) allows attachment to a Full Body Harness and Hook and Loop Straps
(K) stabilize the Energy Absorber to the Full Body Harness. Figure 1 identifies available Nano-Lok Wrap Back models and their
Connector (L) configurations. See Table 1 for Nano-Lok Wrap Back SRD and connector specifications.
The standard SRD contain 8 ft (2.4 m) long web lifelines of which 6 ft (1.82 m) retracts within the SRD housing.
Table 1 – Specifications
Component Specifications:
SRL Housings Super Tough Nylon, UV Resistant
Drum Aluminum Alloy
Internal Components Stainless Steel, Alloy Steel
Lifeline Lifeline: Kevlar/Dyneema
Energy Absorber Cover: Polyester and Nylon Fabric, Web: Vectran/Polyester, Stitching: Nylon Thread
Swivel Zinc Plated Steel
Harness Connector Aluminum Alloy Frame and Stainless Steel Locking Pin
Fasteners Zinc Plated Alloy Steel Screws; Stainless Steel Rivets
Locking Pawls Stainless Steel
Main Shaft Stainless Steel
Motor Springs Stainless Steel
Connector Specifications:
Description Model Number Material Gate Opening Gate Strength Tensile Strength
1 Rebar Snap Hook 2000210 Steel 2-1/2 in (63 mm) 3,600 lbs (16 kN) 5,000 lbs (22.2 kN)
2
WrapBack Rebar Snap
Hook
9501804 Steel 3/4 in (19 mm) 5,000 lbs (22.2 kN) 5,000 lbs (22.2 kN)
Lifeline Tensile Strength: 9513161 - 25/32 in. Web, Dyneema/Kevlar, Black, Min. Tensile Strength 4,900 lb (21.8 kN)
Represents wrapped Nano-Lok Wrap Back connection.
Represents straight line Nano-Lok Wrap Back connection.
Performance Specifications:
SRL Specifications ANSI/OSHA Models OSHA
Capacity Range 130 lbs - 310 lbs (59 kg - 140 kg) 311 - 420 lbs (141 kg - 191 kg)
Maximum Arresting Force 1,350 lbs (6.0 kN) 1,800 lbs (8 kN)
Average Arresting Force 900 lbs (4.0 kN) N/A
Claimed Maximum Arresting Distance
1
54 in (1.4 m) 54 in (1.4 m)
Minimum Fall Clearance Required
1
6 ft (1.8 m) 8 ft (2.4 m)
Maximum Free Fall
2
5 ft (1.5 m)
2
5 ft (1.5 m)
2
1 Assumes the SRL is mounted directly above (overhead) the end user.
2 Free Fall : Correct application of the SRL, with the user working directly below the anchorage point and no lifeline slack, will eliminate Free Fall. Free Fall should be
limited to 2 ft (0.6 m) where the user is not directly under the SRL or minimal slack exists in the lifeline.