MILLER AirCore Tower Climbing Harness Instruction Manual
- June 3, 2024
- Miller
Table of Contents
MILLER AirCore Tower Climbing Harness
This AirCore Tower Climbing Harness Supplement must be used in conjunction with the Miller Harnesses and Body Belts User Instruction Manual (I119).
WARNING
All persons using this equipment must read, understand and follow all instructions. Failure to do so may result in serious injury or death. Do not use this equipment unless you are properly trained.
Purpose
The new Miller AirCore TM Tower Climbing Harness provides the ultimate in
performance, comfort and durability- exceeding expectations when used in even
the most challenging climbing environments!
This new line of AirCore harnesses keeps your workers comfortable and safe –
increasing productivity. It’s designed for workers climbing cell phone, TV,
radio and utility towers, while building decommissioning towers, changing out
transmission lines/antennas, or installing/replacing lights.
Harness Description and Features
Miller AirCore Tower Climbing Harnesses and Accessories
Model No.| Description
ACT-QCUG*
| AirCore Harness with stretchable DuraFlex® webbing, back D-ring, combination
D-ring pad/shoulder pads, waist belt and lumbar back pad, side positioning
D-rings, quick connect chest strap with front D-ring, quick connect leg straps
with padding, cam buckle shoulder strap adjustment, two pull-free lanyard
rings, two pull- free Velcro keepers, elastic webbing keepers, two tool loops,
and mating buckle connectors for attachment of accessories. Includes steel
hardware.
ACT-QCBCUG| Same as ACT-QCUG, plus includes Bos’n Chair with steel hardware
(ACT-BC).
AAT-QCUG| Same as ACT-QCUG, but made with aluminum hardware.
AAT-QCBCUG*| Same as ACT-QCUG, but made with aluminum hardware and includes
Bos’n Chair with aluminum hardware (AAT-BC).
ACT-BC| Bos’n Chair with steel mating buckle connectors for attachment to
harness, two adjustment straps with clips that attach to harness, and two
steel D-rings.
AAT-BC| Same as ACT-BC, but made with aluminum hardware.
ACTL10| Tool Loops for attachment to harness belt (package of 10).
- Harnesses are available in two colors: green or blue.
Harnesses are available in Small/Medium (SM), Universal (U), or XXL/XXXL (23X).
Easily visible, color-coded tabs indicate harness sizes.
AirCore Tower Climbing Harness
~Unique Features~
Requirements, Warnings and Limitations
Users must read, understand and follow all requirements, warnings and
limitations provided in the Miller Harnesses and Body Belts instruction manual
(I119) as well as this supplement.
Fall protection connecting devices should be attached to the back D-ring. A
front D-ring may be used for fall arrest only in applications where the
personal fall arrest system limits the maximum free fall distance to 2 ft.
(0.6m) and limits the maximum arrest force to 900 lbs. (4kN), such as climbing
applications.
Side D-rings are designed for positioning applications only.
A personal fall arrest system must be in place and connected at all times when
the Bos’n chair is in use. The full body harness must be attached to a
lifeline independent of the work line used for suspension.
Bos’n chair D-rings are designed for positioning during suspension work only.
Bos’n chair steel or aluminum mating buckle connectors must be properly
connected to corresponding mating buckle connections on harness for use.
Adjustment straps with clips also must be attached to harness, but never use
adjustment straps with clips as the only means of attachment to the harness.
Tool loops must only be used for the attachment of light tools and tool bags.
Never use tool loops for lanyard storage, fall restraint, or any other purpose
for which they were not designed.
Always ensure that there is adequate fall clearance for the application.
Harness Preparation
Attaching Bos’n Chair
Lay harness on a flat surface with the back side facing up (Fig. 1). Place the Bos’n chair (Fig. 2) on the harness just below the belt and back pad with the webbing straps facing up and the mating buckle connectors extending toward their corresponding connections on the harness (Fig. 3).
Connect the mating buckle component on the Bos’n chair with its corresponding
mating buckle component on the belt as shown (Fig. 4a & 4b). Repeat for the
opposite side.
Then attach each adjustment strap clip on the Bos’n chair with its corresponding clip connection on the harness as shown (Fig. 5a & 5b).
Ensure that webbing straps are not twisted and that buckles and lips are
securely and properly connected (Fig. 6).
The Bos’n chair can be adjusted up or down by the user while the user is wearing the harness (Fig. 7). Simply grasp the free end of the adjustment webbing strap and pull downward to bring the Bos’n chair up or extend webbing out of the clip (shortening the free end) to lower Bos’n chair.
Use
Don the harness ensuring that the harness is properly fitted and all buckle
connections are secure.
Refer to 1119 Miller Harnesses and Body Belts instruction manual.
New Cam Buckle Adjustment
-
Grasp the loose end of the webbing strap and pull to tighten.
Tuck excess webbing into elastic keepers. -
To loosen, press the cam buckle tab outward to release grip and pull the webbing strap out through the buckle.
Applications
Fall Arrest
A compatible connecting device and anchorage connector anchorage must always
be used in conjunction with the harness to complete the personal fall arrest
system and protect the worker from a fall while working at heights. The Bos’n
chair is not designed to arrest a fall.
The connecting device must be connected to the back D-ring on the harness. A
two-legged shock absorbing lanyard or dual self-retracting lifeline system is
recommended for climbing applications. Alternatively, a fall arrester attached
to a vertical climbing system may be connected to the front D-ring on the
harness so long as the personal fall arrest system limits the maximum free
fall distance to 2 ft. (0.6m) and limits the maximum arrest force to 900 Ibs.
(4.0kN).
For non-climbing applications, a single shock-absorbing lanyard or self-
retracting lifeline is sufficient.
Suspension
For suspension work, connect the Bos’n chair D-rings to an approved, compatible suspension system. A personal fall arrest system must be used in conjunction with the suspension system.
Note: Always read and follow the instructions provided with all system components used in conjunction with the AirCore Tower Harness.
Use of Tool Loops
Tool loops are designed for the convenient attachment of light tools and tool bags (Fig. 10). Tools must have the means to connect to the loop and should never hang freely without a closed connection.
Tool loops are removable or replaceable, and additional tool loops may be added. Simply remove the belt, change or add tool loops, and reattach the belt to the harness.
WARNING: Belt must be properly reattached to the harness, ensuring that all points of attachment have been utilized correctly (see Fig. 11a, 11b & 11c). The belt must go through side D-rings, mating buckles, and back web loops as shown.
Storage of Connecting
Device when Not in Use
Attach the connecting device to either the pull-free Velcro® keeper (Fig. 12) or the pull-free lanyard ring (Fig. 13).
Do not attach an unused connecting device to any other components of the harness.
Inspection
Inspect harness, including Bos’n chair, according to the Miller Harness and Body Belts instruction manual. Always inspect for the absence of or alteration to any elements affecting the equipment form, fit or function and check for any indications of damage that may affect the integrity and operation of the product. If in doubt, contact the manufacturer.
Honeywell Safety Products
P.O. Box 271, 1345 15th Street
Franklin, PA 16323 USA
www.millerfallprotection.com
References
Read User Manual Online (PDF format)
Read User Manual Online (PDF format) >>