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3.0
INSTALLATION
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Installation of the DBI-SALA Roof Top Counterweight Anchor must be supervised by a Qualified Person
must be certified by a Competent Person
potential forces that could be encountered during a fall.
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3.1
PLANNING: Plan your fall protection system prior to installation of the Roof Top Counterweight Anchor. Account for all factors that may
affect your safety before, during and after a fall. Consider all requirements, limitations, and specifications defined in Section 2 and Table 1.
Determine the proper location of the Roof Top Counterweight Anchor. It must be flat (5° slope or less) and be at least 8 ft (2.5 m) away
from the edge of the structure or any openings such as skylights or doorways, and as close as possible to the work area (Figure 7).
;
Fall Clearance: Users must add 5 ft (1.5 m) into fall clearance calculations to account for any movement in the
counterweight anchor base while arresting a fall.
3.2
INSTALLING THE Roof ToP CouNTERwEIGHT ANCHoR: The Roof Top Counterweight Anchor can be installed on any roof
meeting the anchorage requirements specified in Table 1. Sweep the installation location to remove loose materials. To install the
Roof Top Counterweight Anchor (Figure 9):
1.
Lay out the Rubber Coated Counterweight Plates on the flat surface as the base counterweights for the system. L-Bolts will be inserted
though one of the two holes in each of the Rubber Coated Counterweight Plates.
2.
Install the L-Bolt by lifting the Rubber Coated Counterweight Plate and insert the L-Bolt through one of the two holes in each base
counterweight from the bottom, up through the hole and returning the Rubber Coated Counterweight Plate back to the flat surface.
Alternate the direction of each L-Bolt.
3.
Temporarily position the Roof Top Anchor on the base counterweights and L-Bolts to confirm the L-Bolts are oriented correctly in the
base counterweights.
4.
After confirmation of the L-Bolt orientation, remove the Rooftop Anchor from the base counterweights. Stack two additional
counterweights on each base counterweight with the L-Bolts protruding through the matching holes.
5.
Position the Roof Top Anchor on the L-Bolts and counterweight stacks. Make sure each L-Bolt passes through one of the mounting
holes in the Roof Top Anchor.
6.
Add the final layer of counterweights to overlap the Roof Top Anchor while ensuring the L-Bolts protrude through the same holes as
the previously added counterweights. A total of 16 counterweights are used in this Roof Top Counterweight Anchor system.
7.
Install a washer and nut on each of the L-Bolts. Hand tighten all four nuts securely. Use of tools may result in over-tightening, possibly
damaging the system.
4.0
USE
4.1
BEfoRE EACH uSE: Verify that your work area and Personal Fall Arrest System (PFAS) meet all criteria defined in Section 2 and a
formal Rescue Plan is in place. Inspect the Roof Top Counterweight Anchor per the 'User' inspection points defined on the "Inspection and
Maintenance Log" (Table 2).
;
If the Roof Top Counterweight Anchor is subjected to the forces of arresting a fall, it must be removed from service
immediately and replaced or inspected by a Competent Person.
;
The system is rated for both Fall Arrest and Fall Restraint, and it is recommended that the system be configured in fall
restraint whenever possible. Work positioning is not advised with this system as it may cause premature deployment of the
anchor module requiring it to be removed from service until repair or replacement.
4.2
fALL ARREST CoNNECTIoNS: The Roof Top Counterweight Anchor is used with a Full Body Harness and Energy Absorbing Lanyard or
Self-Retracting Device (SRD). Connect the Lanyard or SRD between the D-Ring on the Roof Top Counterweight Anchor and the back Dorsal
D-Ring on the Harness as instructed in the instructions included with the Lanyard or SRD.
5.0
INSPECTION
5.1
INSPECTIoN fREQuENCY: The Roof Top Counterweight Anchor must be inspected at the intervals defined in Section 1. Inspection
procedures are described in the "Inspection and Maintenance Log" (Table 2). Inspect all other components of the Fall Protection System per
the frequencies and procedures defined in the manufacturer instructions.
5.2
DEfECTS: If inspection reveals an unsafe or defective condition, remove the Roof Top Counterweight Anchor from service. Do not attempt
to repair the Fall Arrest System beyond the hardware replacement allowed in Table 2. Remove the system from service, mark it with "DO
NOT USE". Contact 3M regarding replacement or repair.
;
Only 3M or parties authorized in writing may make repairs to this equipment.
;
After equipment has been removed from service, it may not be returned to service until a
Competent Person confirms in writing that it is acceptable to do so.
5.3
PRoDuCT LIfE: The functional life of the Fall Arrest System is determined by work conditions and maintenance. As long as the product
passes inspection criteria, it may remain in service.
5.3
SERVICE: Only 3M or parties authorized in writing by 3M may make repairs to this equipment.
as meeting the criteria for a Certified Anchorage, or that it is capable of supporting the
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. The installation
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