Installation - 3M DBI-SALA Nano-Lok 3101521 User Instruction Manual

3.0 Installation

3.1 PLANNING: Plan your fall protection system before starting your work. Account for all factors that may affect your safety
before, during, and after a fall. Consider all requirements and limitations defined in Section 2.
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In most applications, the Nano-Lok SRD can be connected to the anchorage or the harness Dorsal location. Either
orientation is allowed; except as noted in Section Section 4
3.2 ANCHORAGE: Figure 7 illustrates typical SRD anchorage connections. Select an anchorage location with minimal free fall and
swing fall hazards (see Section 1). Select a rigid anchorage point capable of sustaining the static loads defined in Section 1.
Where anchoring overhead is not feasible, Nano-Lok SRDs may be secured to an anchorage point as low as foot level, but will
require increased clearance values (see Figure 4).
3.3 HARNESS MOUNTING: Some SRD models include a Single SRD or Twin SRD Harness Interface for mounting the SRD(s)
on a Full Body Harness just below the Dorsal D-Ring:
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Some Full Body Harnesses are equipped with a Personal SRD Link (PSRL Link) that integrates the Dorsal D-Ring
with attachment elements for Harness Mounted Self-Retracting Devices (Figure 8). It is also acceptable to connect the
SRD to the Harness Dorsal D-Ring with a Carabiner or Snaphook.
• Single SRD Harness Interface: Where worker mobility is critical, a Single SRD Harness Interface can be used to mount
the SRD on the back of a Full Body Harness just below the Dorsal D-Ring (see Figure 9). The worker can then connect to
varied anchorage points located throughout the site with the Lanyard End of the SRD without repeatedly reinstalling the
SRD. To mount the SRD on a Full Body Harness with the Single SRD Harness Interface:
1. Loosen the Harness Webbing: Pull out on the Web Straps (A) where they pass through the bottom of the
Dorsal D-Ring (B) until there is sufficient space to slide the Single SRD Interface between the Web Straps and
Back Pad.
2. Open the Harness Interface: Push down on the Locking Buttons (C) simultaneously and slide the Locking Pin
(D) out.
3. Position the Harness Interface around the Web Straps: With the Locking Buttons (C) facing out and Gate
facing up, insert the Nose End of the Harness Interface (E) behind the Web Straps (A). Rotate the Harness
Interface behind the Web Straps until the Harness Interface surrounds the the Web Straps. Pull the Web Straps
back through the Dorsal D-Ring and Back Pad to secure the Harness Interface.
4. Attach the SRD to the Harness Interface: Slide the Swivel Eye on the SRD (F) over the Harness Interface's
Locking Pin (D) and then push in the Locking Pin until it locks into place in the opposite end of the Harness
Interface.
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The Red Band on the knob end of the Harness Interface Locking Pin will be exposed if the Harness
Interface is unlocked. To avoid accidental release of the connection, always make sure the Harness Interface
is locked before using the Harness and attached SRD. Failure to do so could result in injury or death.
• Twin SRD Harness Interface: In climbing applications where 100% tie-off is required, the Twin SRD Harness
Interface can be used to mount two SRDs side-by-side on the back of a Full Body Harness just below the Dorsal
D-Ring (see Figure 10). To mount two SRDs on a Full Body Harness with the Twin SRD Harness Interface:
1. Loosen the Harness Webbing: Pull out on the Web Straps (A) where they pass through the bottom of the
Dorsal D-Ring (B) until there is sufficient space to slide the Twin SRD Interface between the Web Straps and
D-Ring Pad.
2. Open the Harness Interface: Push up on the Connector Insert (C) to unsnap the Clamps (D) from the
Connector and then swing the Connector Insert up to unlock the Gate. Push the Gate (E) inward to open the
Connector.
3. Thread the first SRD onto the Harness Interface: Insert the Nose of the Connector (F) through the Swivel
Eye (G) on the SRD and then rotate the SRD around to the Gate End of the Connector (H). The Gate can be
rotated toward the Nose to allow clearance for the Swivel Eye between the Gate and Spine of the Connector.
4. Position the Harness Interface around the Web Straps: With the Gate facing up, insert the Nose of the
Connector (F) behind the Web Straps (A). Rotate the Connector behind the Web Straps until the Connector
surrounds the the Web Straps.
5. Add the second SRD on the Harness Interface: Slide the SRD's Swivel Eye (G) over the Nose of the
Connector (F) and position the SRD Swivel Eye in the Nose End of the Connector (I). Swing the Gate (E) closed.
6. Close the Harness Interface: Rotate the Connector Insert (C) forward so the Clamps (D) secure on the
Connector. When properly closed, the Web Straps should pass through the Webbing Slot (J) at the top of the
Connector Insert and the SRD Swivel Eyes should be secured in the Recesses (K) on either side of the Connector
Insert. Once the Harness Interface is closed, pull the Web Straps (A) back through the Dorsal D-Ring and D-Ring
Pad to eliminate slack in the webbing and secure the Connector between the Web Straps and D-Ring Pad.
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