3M DBI SALA OSHA 1926.502(d)(12), Instruction Manual

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The counterweight includes a locking cam designed to arrest the counterweight if it falls. The counterweight locking cam
is designed to operate on 1/2-inch diameter guy cable. The angle the guy cable makes with the ground must be between
45° and 75°. See Figure 10. The recommended angle for the guy cable is 60°. The guy cable should be anchored to the
ground structure. The anchor point should support 1,000 lbs. minimum. When the climb assist mast is used, the guy cable
should be attached to the shackle located above the sheave on the bottom of the mast. Use cable clips or similar items to
attach the guy cable to the shackle. See Figure 8 for approximate guy cable length based on the angle of installation.
1. Loosen the spring tensions by threading the tension adjusting nut up to the anchor nut. Remove the cable retaining
bolts from the ends of the counterweights. See Figure 9A.
2. Lift the counterweight up to the 1/2-inch guy cable and slide the guy cable through the grooves at each end of
the counterweight. Ensure the guy cable rests in the slots of the plastic cable guide wear strip. Replace the cable
retaining bolts. Tighten the tension adjusting nut until there are 3 inches of exposed thread between the two (2)
nuts. See Figure 9B.
3. Run the 1/4-inch cable from the Climb Assist/Fall Arrest System through the guide sheave to the counterweight quick
link. Use a 1/4-inch thimble and three (3) twin base clamps. Space between the clamps must be 3 3/4-inch. At least
1/2-inch of cable must extend past the last clamp. Torque the clamps to 30 ft-lbs. See Figure 9C.
4. Remove the counterweight cover plate. Add any additional weight to the Climb Assist/Fall Arrest System. Replace the
cover. See Figure 9D. The recommended weights are 6 lbs., 7/8-inch diameter, 36 inches long round steel bars.
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The tension in the spring may be too tight to allow the counterweight to go down if the guy wire is not
steep enough, and or little additional weight is added to the empty counterweight. If occurs, make the following
adjustments:
With the counterweight loaded to the weight you anticipate using, loosen the tension adjusting nut two (2)
complete turns and try the climb assist device to see if the counterweight slides down the guy wire as the climber
climbs the ladder. The adjustment procedure can be continued until the counterweight moves freely down the guy
wire. Do not loosen the tension adjusting nut further than two (2) turns past the point at which the counterweight
can move freely down the guy wire. If the guy wire angle changes, the tension adjusting nut must be reset as
described previously.
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 Climb Assist/Fall Arrest System per the ‘ User ’ inspection points
defined in the “ Inspection and Maintenance Log ” ( Table 2 ). If inspection reveals an unsafe or defective condition, do not
use the system. Remove the system from service and destroy, or contact 3M regarding replacement or repair.
5.0 INSPECTION
5.1 INSPECTION FREQUENCY: The Climb Assist/Fall Arrest System must be inspected at the intervals defined in Section 2.
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’s instructions. If a fall occurs
with the Climb Assist/Fall Arrest System, a formal inspection of the entire system must be performed by a Competent
Person¹ other than the user. A separate fall protection system must be used while inspecting the Climb Assist/Fall Arrest
System. Inspect per the ‘Competent Person
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inspection points defined in the Inspection and Maintenance Log .
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Climb Assist/Fall Arrest System s are equipped with a Radio Frequency Identification (RFID) Tag. The RFID Tag can
be used in conjunction with a Handheld Reading Device to simplify inspection and inventory control and provide records
for your fall protection equipment.
5.2 DEFECTS: If inspection reveals an unsafe or defective condition, remove the Climb Assist/Fall Arrest System from service
immediately and contact 3M regarding replacement or repair. Do not attempt to repair the Fall Arrest System.
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Authorized Repairs Only : O nly 3M or parties authorized in writing my make repairs to this equipment.
5.3 PRODUCT LIFE: The functional life of the Climb Assist/Fall Arrest System is determined by work conditions and
maintenance. As long as the product passes inspection criteria, it may remain in service.
1 Competent Person: One who is capable of identifying existing and predictable hazards in the surroundings or working conditions which is unsanitary, hazardous, or
dangerous to employees, and who has authorization to take prompt corrective measures to eliminate them.