Operating Instruction TE 3-M/-C (01)

4 English
▶ Check that the side handle is fitted correctly and tightened securely. Always hold the tool securely
with both hands on the grips provided.
▶ Wear a dust mask if the tool is operated without a dust removal system.
▶ Improve the blood circulation in your fingers by relaxing your hands and exercising your fingers
during breaks between working.
▶ The tool is not intended for use by debilitated persons who have received no special training.
▶ Keep the tool out of reach of children.
▶ Avoid touching rotating parts. Switch the power tool on only after bringing it into position at the
workpiece. Touching rotating parts, especially rotating drill bits or other accessories, may lead to injury.
▶ Always lead the supply cord and extension cord away from the tool to the rear while working. This
helps to avoid tripping over the cord while working.
▶ Dust from material such as paint containing lead, some wood species, minerals and metal may
be harmful. Contact with or inhalation of the dust may cause allergic reactions and/or respiratory
diseases among operators or bystanders. Certain kinds of dust such as oak and beech wood dust
are classified as carcinogenic, especially in conjunction with additives for wood conditioning (chromate,
wood preservative). Material containing asbestos may be worked on only by specialists. Use a dust
removal system that is as effective as possible. To achieve a high level of dust collection, use a
suitable vacuum cleaner of the type recommended by Hilti for wood dust and/or mineral dust and
which is designed for use with this tool. Ensure that the workplace is well ventilated. Observe
national regulations applicable to the materials you intend to work with.
▶ In the event of a power failure or interruption in the electric supply, switch the tool off, unplug the
supply cord and release the switch lockbutton (if applicable). This will prevent accidental restarting
when the electric power returns.
Electrical safety
▶ Before beginning work, check the working area (e.g. using a metal detector) to ensure that no
concealed electric cables or gas and water pipes are present. External metal parts of the power tool
may become live, for example, when an electric cable is damaged accidentally. This presents a serious
risk of electric shock.
▶ Check the tool’s supply cord at regular intervals and have it replaced by a qualified specialist if
found to be damaged. If the tool’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.
Work area
▶ If the work involves breaking right through, take the appropriate safety measures at the opposite
side. Parts breaking away could fall out and / or fall down and injure other persons.
Personal safety
▶ Wear protective gloves. The product can get hot during operation. There is a risk of injury (cutting or
burning) if the accessory tool is touched while changing it.
Printed: 20.12.2018 | Doc-Nr: PUB / 5245522 / 000 / 04