Hilti DD 150-U Mode D'emploi page 43

▶ Check that the side handle is fitted correctly and tightened securely. Always hold the tool with both
hands on the grips provided. In accordance with the applications for which it is designed, the product
produces a high torque. Grip the side handle as far to the outside as possible.
▶ Never use continuous running lock in handheld operation!
▶ Always support the power tool firmly in preparation for use. This power tool produces high torque. If the
power tool is not securely supported at all times during operation loss of control can result and lead to
injuries.
▶ Do not touch rotating parts. Switch the product on only after it is in position at the workpiece. Touching
rotating parts, especially rotating accessory tools, can result in injury.
▶ Avoid skin contact with drilling slurry.
▶ Dust from materials such as lead-based paint, certain types of wood and concrete/masonry/stone
containing quartz, minerals or metal can be harmful to health. Contact with or inhalation of the dust can
cause allergic reactions and/or respiratory or other diseases among operators or bystanders. Certain
kinds of dust such as oakwood and beechwood dust are classified as carcinogenic, especially in
conjunction with additives for wood conditioning (chromate, wood preservative). Only specialists are
permitted to handle material containing asbestos. Use a dust removal system that is as effective
as possible. To achieve a high level of dust collection, use a suitable vacuum extractor of the type
recommended by Hilti for wood dust and/or mineral dust and which is designed for use with this power
tool. Make sure that the workplace is well ventilated. It is advisable to wear a respirator appropriate
for the type of dust generated. Comply with national regulations applicable to the materials you will be
working with.
▶ The diamond core drilling machine and the diamond core bit are heavy. There is a risk of crushing parts
of the body. The user and any other persons in the vicinity must wear of the product while the power
tool is suitable eye protection, a hard hat, ear protection, protective gloves and safety footwear while the
machine is in use.
▶ Improve the blood circulation in your fingers by relaxing your hands and exercising your fingers during
breaks between working.
▶ If work involves break-through, always secure the area on the side opposite where the work is carried
out. Pieces of debris could drop out and/or fall down and injure other persons.
▶ Wear eye protection, protective gloves and, if you are not using a dust removal system, wear light
respiratory protection. Flying fragments present a risk of injury to the body and eyes.
Power tool use and care
▶ Make sure that the product is correctly and securely mounted on the drill stand.
▶ Always make sure that an end stop is installed on the drill stand as otherwise the safety-relevant end-stop
function is not implemented.
▶ Make sure that the accessory tools used have a mounting system suitable for use with the to the product
and they are secured in the chuck correctly.
▶ The supply cord, the extension cord and the suction hose away to the rear of the product always. This
helps to avoid tripping over the cord or hose while working.
▶ Do not use damaged supply cord or hoses.
▶ Set up the mount on a firm, smooth and horizontal surface. It will not be possible to guide the power tool
smoothly and safely if the mount can slip or wobble.
▶ Check the nature of the surface. Rough surfaces may reduce holding power. Coatings or composite
materials may pull away from the surface while you are working.
▶ Do not overload the device and do not use it as a substitute for a ladder or platform. Overloading the
device or standing on it may shift its center of gravity to a higher position, causing it to tip over.
▶ When taking a break, lay the diamond core drilling machine down on a suitable surface where it will be
safe. Wait until the diamond core drilling machine has come to a complete stop before you lay it down.
▶ Disconnect the diamond core drilling machine from the electric supply before removing the core or tools.
Electrical safety
▶ Avoid using extension cords with multiple power outlets and the simultaneous use of several products.
▶ The product may be operated only when connected to an adequately rated electric supply equipped with
an earth (ground) conductor.
▶ 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 product can become live,
for example, when an electric cable is damaged accidentally. This constitutes a serious risk of electric
shock.
▶ Make sure that the supply cord cannot be damaged as the carriage advances.
▶ Never operate the product without the supplied PRCD (for products without PRCD: Never operate the
machine without an isolating transformer). Test the PRCD each time before use.
*2204400*
2204400 English 35