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6.2.2.4 General safety rules
— For multiple hazards, read and understand the safety instructions before installing, operating, repairing,
maintaining, changing accessories on, or working near the assembly power tool for threaded fasteners.
Failure to do so can result in serious bodily injury.
— Only qualied and trained operators should install, adjust or use the assembly power tool for threaded
fasteners.
— Do not modify this assembly power tool for threaded fasteners. Modications can reduce the
effectiveness of safety measures and increase the risks to the operator.
— Do not discard the safety instructions; give them to the operator.
— Do not use the assembly power tool for threaded fasteners if it has been damaged.
— Tools shall be inspected periodically to verify that the ratings and markings required by this part of
ISO 11148 are legibly marked on the tool. The employer/user shall contact the manufacturer to obtain
replacement marking labels when necessary.
6.2.2.5 Projectile hazards
— Failure of the workpiece, of accessories or even of the inserted tool itself can generate high-velocity
projectiles.
— Always wear impact-resistant eye protection during the operation of the assembly power tool for
threaded fasteners. The grade of protection required should be assessed for each use.
— Ensure that the workpiece is securely xed.
6.2.2.6 Entanglement hazards
— Entanglement hazards can result in choking, scalping and/or lacerations if loose clothing, personal
jewellery, neckware, hair or gloves are not kept away from the tool and accessories.
— Gloves can become entangled with the rotating drive, causing severed or broken ngers.
— Rotating drive sockets and drive extensions can easily entangle rubber-coated or metal-reinforced
gloves.
— Do not wear loose-tting gloves or gloves with cut or frayed ngers.
— Never hold the drive, socket or drive extension.
— Keep hands away from rotating drives.
6.2.2.7 Operating hazards
— The use of the tool can expose the operator’s hands to hazards including crushing, impacts, cuts and
abrasions and heat. Wear suitable gloves to protect hands.
— Operators and maintenance personnel shall be physically able to handle the bulk, weight and power of
the tool.
— Hold the tool correctly; be ready to counteract normal or sudden movements and have both hands
available.
— Maintain a balanced body position and secure footing.
— In cases where the means to absorb the reaction torque are requested, it is recommended to
use a suspension arm whenever possible. If that is not possible, side handles are recommended for
straightcase and pistol-grip tools. Reaction bars are recommended for angle nutrunners. In any case, it is
recommended to use a means to absorb the reaction torque above 4 N·m for straight tools, above 10 N·m
for pistol-grip tools, and above 60 N·m for angle nutrunners.
— Release the start-and-stop device in the case of an interruption of the energy supply.
— Use only lubricants recommended by the manufacturer.
— Fingers can be crushed in open-ended crow-foot nutrunners.
— Do not use in conned spaces and beware of crushing hands between tool and workpiece, especially
when unscrewing.
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