12
3.4
CONNECTING TO ANCHORAGE:
Figure 6 illustrates typical SRD anchorage connections. The Anchorage (A) should
be directly overhead to minimize free fall and swing fall hazards (see Section 3.3.B). Select an anchorage capable of
sustaining the static loads defined in Table 1. Depending on system and product configuration, the SRD may be mounted
on the anchorage point or on the user’s full body harness.
A. ANCHORAGE MOUNTING:
Single-SRD models may be mounted on anchorage points as long as they are installed
properly and have the right connectors for securing on an anchorage point. The top connector must be a carabiner,
snap hook, or rebar hook. To secure an SRD overhead, first secure the Top Connector (B) to the anchorage point.
Then, secure the Bottom Connector (C) directly to the dorsal D-ring (D) of your harness.
;
Large-throat snap hooks must never be secured to D-rings or other connecting elements unless they have a
gate strength of 16 kN (3,600 lbf) or greater.
B. HARNESS MOUNTING:
Harness-mounted SRDs are secured to the full body harness directly by their Harness
Interface (E). The user then secures to anchorage connection points using their Bottom Connectors (C). Twin-SRD
models enable the user to maintain 100-percent tie-off when transferring between anchorage points.
;
Certain SRD models in this instruction must never be anchored below one’s dorsal D-ring. See the “Fall
Clearance Charts” for more information on anchorage height restrictions.
Figure 6 - Connecting to Anchorage
D
C
A
B
A
C
E
E
A
C
C
3.5
INSTALLING A HARNESS-MOUNTED SELF-RETRACTING DEVICE:
Single- and Twin-SRD models with harness web
interfaces as their top connector may be installed directly onto the user’s full body harness. This format enables easier
transportation of the SRD and ensures that the SRD is within reach when moving between anchorage points. The methods
for mounting an SRD on a harness vary with SRD model and the interface provided.
;
Harness interfaces may also be used in coordination with specific features of full body harnesses to secure the
Single- or Twin-SRD to the harness. Examples include the pSRD Link and the molded X100 SRD Interface Loop
present on some 3M harness models. The following instructions provide a general method for how each harness
interface should be used. See the manufacturer instructions of your full body harness for more information on specific
features for interfacing with SRDs.
A. CAB MOUNTING:
Figure 7 illustrates Cab Mount Nano-Lok SRD models that are designed to be mounted overhead
in the cab of an Order Picker or similar equipment. They must be used with a Full Body Harness as part of a complete
fall arrest system. Figure 8 illustrates installation of the Cab Mount SRD. Select anchorage capable of sustaining the
loads defined in Table 1 and attach the Nano-Lok SRD as follows:
1.
Remove the bolt (A) from the Cab Mount and disassemble the Cab Mount.
2.
Reassemble the Cab Mount on the SRD eyebolt over the end rung (A) of the can top. Ensure that the Cab Mount
is assembled as shown, with the spacers facing the correct direction. Reinsert the bolt (B) to hold the Bracket
together. Torque the assembly to 150 in.-lb. (16.95 N-m).
;
Use a 1/2 in. socket and wrench when installing the Cab Mount.
3.
Confirm that the SRD and the Cab Mount connection are installed correctly. Three or four threads (A) of the
bolt should be visable past the end of the locking nut. If three or four threads are not visable, confirm that the
spacers (B) are correctly oriented and adjust if necessary.
;
Confirm the Swivel Eye of the SRD does not become caught in between the spacers of the Cab Mount.
The smaller portion of each spacer, where the spacers meet, should be threaded through the Swivel Eye
completely. Confirm the Swivel Eye is able to rotate freely after installation.
