General Safety Information
These User Instructions are not to be removed except by the
user of this equipment. User Instructions must always be
available to the user.
Compliant fall protection and emergency rescue systems
help prevent serious injury during fall arrest. Users must
read and understand the User Instructions provided with the
product and be properly trained by their employer prior to
use per OSHA 29 CFR 1910.66 and 1926.503 or applicable
local standards. Misuse or failure to follow warnings and
instructions may result in serious personal injury or
death. For proper use, see supervisor, User Instructions, or
call Technical Service at 800-243-4630.
Purpose
The 3M Bosun Chair is a single-point adjustable suspension
scaffold designed to support one user in a seated position.
Use Instructions
1. Failure to follow all instructions and limitations on the
use of Bosun Chairs may result in serious personal injury
or death.
2. Before using a personal fall arrest system, employees
must be trained in accordance with the requirements of
OSHA 29 CFR 1910.66 in the safe use of the system and
its components.
3. Personal fall arrest systems, including those used with
Bosun Chairs, must be inspected prior to each use for
wear, damage, and other deterioration and defective
components must be immediately removed from service,
in accordance with the requirements of OSHA 29 CFR
1910.66 and 1926.502.
4. The complete fall protection system must be planned
(including all components, calculating fall clearance, and
swing fall) before using.
5. Users must have a rescue plan, and the means at
hand to implement it, that provides the prompt rescue
of employees in the event of a fall or assures that
employees are able to rescue themselves.
6. Store Bosun Chairs in a cool, dry, clean environment, out
of direct sunlight, when not in use.
Use Limitations
1. Bosun Chairs are designed for single users (including
clothing, tools, ect.) with a capacity up to 400 pounds.
2. Users of Bosun Chairs must be protected by a separate
personal fall arrest system.
3. Do not use Bosun Chairs when a heat-producing process
such as gas or arc welding is being conducted.
4. Bosun Chairs are designed to be used in temperatures
ranging from -40ºF to +130ºF (-40°C to +54°C).
5. Do not expose Bosun Chairs to chemicals or harsh
solutions which may have a harmful effect. Contact 3M
Technical Service with any questions.
6. Caution must be taken when using Bosun Chairs near
moving machinery, electrical hazards, sharp edges,
or abrasive surfaces, as contact may cause equipment
failure, personal injury, or death.
7. Minors, pregnant women and anyone with a history
of either back or neck problems should not use this
equipment.
8. Do not use or install equipment without proper training
from a “competent person” as defined by OSHA 29 CFR
1926.32(f).
9. Only 3M, or persons or entities authorized in writing by
3M, shall make repairs or alterations to the equipment.
Compatibility Limitations
Bosun Chairs must only be coupled to compatible
connectors. OSHA 29 CFR 1926.502 prohibits snaphooks
from being engaged to certain objects unless two
requirements are met: it must be a locking type snaphook,
and it must be “designed for” making such a connection.
“Designed for” means that the manufacturer of the snaphook
specifically designed the snaphook to be used to connect
to the equipment in question. The following connections
must be avoided, because they can result in rollout* when a
nonlocking snaphook is used:
• Direct connection of a snaphook to horizontal lifeline.
• Two (or more) snaphooks connected to one D-ring.
• Two snaphooks connected to each other.
• A snaphook connected back on its integral lanyard.
• A snaphook connected to a webbing loop or webbing
lanyard.
• Improper dimensions of the D-ring, rebar, or other
connection point in relation to the snaphook dimensions
that would allow the snaphook keeper to be depressed by
a turning motion of the snaphook.
*Rollout: A process by which a snaphook or carabiner
unintentionally disengages from another connector or object
to which it is coupled. (ANSI Z359.1-2007)
Part Number Material Length Width Height Thickness Connection Size Weight
4670 Birch Plywood 23-3/4 in. (603mm) 11-3/4 in. (298mm) 25 in. (635mm) 3/4 in. (19mm) 3 in. (77mm) 6 lbs. (2.7kg)
WARNING
Bosun Chair
User Instructions
