Hilti UD 16 Manual page 10

fasteners contacting a "live" wire may make exposed metal parts of the power tool "live" and could give
the operator an electric shock.
Safety instructions when using long drill bits
▶ Never operate at higher speed than the maximum speed rating of the drill bit. At higher speeds,
the bit is likely to bend if allowed to rotate freely without contacting the workpiece, resulting in personal
injury.
▶ Always start drilling at low speed and with the bit tip in contact with the workpiece. At higher
speeds, the bit is likely to bend if allowed to rotate freely without contacting the workpiece, resulting in
personal injury.
▶ Apply pressure only in direct line with the bit and do not apply excessive pressure. Bits can bend
causing breakage or loss of control, resulting in personal injury.
Safety instructions for using mixing paddles or stirrers
▶ Switch the power tool on or off only when the mixing paddle is immersed in the material for mixing.
Failure to do so can cause a loss of control with resultant risk of injury.
2.3 Additional safety instructions
Personal safety
▶ Use the tool only when it is in technically faultless condition.
▶ Never tamper with or modify the power tool in any way.
▶ Always hold the power tool with both hands on the grips provided. Keep the grips dry, clean and
free from oil and grease.
▶ Always lead the supply cord and extension cord away from the power tool to the rear while
working. This helps to avoid tripping over the cord while working.
▶ Use a dust extractor, respiratory protection and protective goggles. Dust produced by sanding can
damage the lungs and the eyes.
▶ Improve the blood circulation in your fingers by relaxing your hands and exercising your fingers
during breaks between working.
▶ Dust from materials, such as paint containing lead, some wood species, concrete / masonry / stone
containing silica, and minerals as well as metal, may be harmful. Contact with or inhalation of the dust
may cause allergic reactions and/or respiratory or other diseases to the operator or bystanders. Certain
kinds of dust are classified as carcinogenic such as oak and beech dust, especially in conjunction with
additives for wood conditioning (chromate, wood preservative). Material containing asbestos may be
handled only by specialists. Use a dust removal system whenever possible. To achieve a high level
of dust collection, use a suitable vacuum cleaner. When indicated, wear a respirator appropriate
for the type of dust generated. Ensure that the workplace is well ventilated. Follow national
requirements for the materials you want to work with.
▶ The tool is not intended for use by debilitated persons who have received no special training. Keep the
tool out of reach of children.
▶ Children are not permitted to play with the machine and must be instructed accordingly.
Electrical safety
▶ Check the machine's supply cord at regular intervals and have it replaced by a qualified specialist if
found to be damaged. If the machine's supply cord is damaged it must be replaced with a specially
prepared and approved supply cord available from Hilti Customer Service. Check extension cords
at regular intervals and replace them if found to be damaged. Do not touch the supply cord or
extension cord if it is damaged while working. Disconnect the supply cord plug from the power
outlet. Damaged supply cords or extension cords present a risk of electric shock.
▶ Switch the electric tool off and unplug the supply cord in the event of an interruption in the electric
supply in order to avoid inadvertent restarting when the power returns.
▶ Have dirtied or dusty power tools that are used frequently for working on conductive materials
checked at regular intervals by a Hilti Service Center. Dust, especially dust from conductive materials,
or dampness on the surface of the power tool can, under unfavorable conditions, lead to electric shock.
Power tool use and care
▶ Secure the workpiece. A workpiece clamped in a vice or secured by some other clamping devices
is more secure than when held only by hand.
▶ Wear protective gloves when changing accessory tools as they get hot during use.
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