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3.0 HARNESS USE
3.1
BEFORE EACH USE of this equipment inspect it according to the "Inspection and Maintenance Log" (Table 1).
3.2
PLAN your system before use. Consider all factors that will affect your safety during use of this equipment. The following
list gives important points to consider when planning your system:
•
Anchorage: Select an anchorage capable of sustaining the Static Load requirements of the intended fall protection
application (see Section 1.1). The anchorage location should address Free Fall, Fall Clearance, Swing Fall, and
Environmental limitations described in Section 1.4.
•
Sharp Edges: Avoid working where system components may be in contact with, or abrade against, unprotected
sharp edges.
•
After A Fall: Components which have been subjected to the forces of arresting a fall must be removed from service
and destroyed.
•
Rescue: The employer must have a rescue plan when using this equipment. The employer must have the ability to
perform a rescue quickly and safely.
3.3
BUCKLES: Full Body Harnesses are equipped with various Buckles for fastening and adjusting Leg Straps and Chest
Straps. Harness Body Belts have a Tongue Buckle. See Figure 1 for the buckle types on your Harness. Figure 9 illustrates
operation of each of the following buckles:
1. Quick Connect Buckles:
A. To fasten the Quick Connect Buckle, insert the Tab into the Receptor until a click is heard.
B. To adjust the attached Web Strap: Pull the Web Strap forward or backward through the Buckle Slot to tighten or
loosen.
C. To release the Quick Connect Buckle: Squeeze the Lock Levers on each side of the Receptor. Pull the Tab out of
the Receptor.
2. Tongue Buckles: Fasten and adjust Tongue Buckles by passing the Tongue through the Buckle Frame and inserting
the Prong through the desired Grommet in the Tongue.
3. Pass-Thru Buckles:
A. Insert the Male Buckle through the slot in the Female Buckle.
B. Tighten the free strap so the the Male Buckle is fl ush against the Female Buckle. Secure the free strap in the Strap
Keeper.
3.4
ADJUSTMENTS: Harnesses are equipped with a pair of Torso Adjusters for adjusting the Shoulder Straps. Figure 10
illustrates adjustment of the Torso Adjusters:
1. Parachute Torso Adjusters: To adjust the Shoulder Straps with the Parachute Torso Adjusters:
A. Pull on the free strap to tighten the Shoulder Strap. To loosen the Shoulder Strap, pull on the free strap and then
back the strap through the Parachute Adjuster.
B. When properly adjusted, secure the free strap in the Strap Keeper.
3.5
PERSONAL SRD LOOP: Some Full Body Harnesses are equipped with a Personal SRD Loop that integrates the Dorsal
D-Ring with attachment elements for Harness-Mounted Self-Retracting Devices (SRDs). Figure 11 illustrates attachment
of the following 3M Self-Retracting Devices: (A) Nano-Lok™ Edge SRDs, (B) Twin Nano-Lok™ SRDs, (C) Single Nano-Lok™
SRDs, (D) Rebel™ SRDs. Other manufacturers' SRDs can also be mounted on the Harness in similar fashion. See the SRD
manufacturer's instructions for requirements and installation instructions specifi c to the SRD.
Contact 3M with any questions or concerns regarding compatibility of your SRD with the Personal SRD Loop.
3.6
DONNING AND FITTING THE FULL BODY HARNESS: Figure 16 illustrates donning and fi tting of the Full Body Harness.
Prior to each use, inspect the harness per the checklist on the "Inspection and Maintenance Log (Table 1)". To don and fi t
the harness:
Procedures for buckling and adjusting the straps on your Harness will vary with the harness model. See Sections 3.3 thru 3.4 and
Figures 9 thru 10 for details.
1.
Lift up and hold the harness by the back Dorsal D-Ring. Ensure the straps are not twisted.
2.
Grasp the Shoulder Straps and slip the harness onto one arm. The Dorsal D-Ring will be located on your back side.
Ensure that the straps are not tangled and hang freely. Slip your free arm into the harness and position the Shoulder
Straps on top of your shoulders. The Chest Strap and Chest Buckle will be positioned on the front side when worn
properly.
3.
Reach between your legs and grasp the Leg Strap on your right side. Bring the strap up between your legs; buckle to
the mating buckle on your right hip, and adjust the Leg Strap for a snug comfortable fi t (see Section 3.3 for buckle
operation). When properly adjusted, tuck the loose end of the Leg Strap under the Strap Keeper.
Repeat this process to buckle and adjust the left Leg Strap.
4.
Adjust and buckle the Tongue Buckle Waist Belt if present. (see Section 3.3 for Tongue Buckle operation).
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