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▶ When securing the drill stand with anchors and fasteners to the workpiece, ensure that the
anchoring used is capable of holding and restraining the machine during use. If the workpiece is
weak or porous, the anchor may pull out causing the drill stand to release from the workpiece.
▶ When securing the drill stand with a vacuum pad to the workpiece, install the pad on a smooth,
clean, non-porous surface. Do not secure to laminated surfaces such as tiles and composite
coating. If the workpiece is not smooth, flat or well affixed, the pad may pull away from the workpiece.
▶ Ensure there is sufficient vacuum before and during drilling. If the vacuum is insufficient, the pad
may release from the workpiece.
▶ Never perform drilling with the machine secured by the vacuum pad only, except when drilling
downwards. If the vacuum is lost, the pad will release from the workpiece.
▶ When drilling through walls or ceilings, ensure to protect persons and the work area on the other
side. The bit may extend through the hole or the core may fall out on the other side.
▶ When drilling overhead, always use the liquid collection device specified in the instructions. Do
not allow water to flow into the tool. Water entering the power tool will increase the risk of electric
shock.
2.4
Additional safety instructions
Personal safety
▶ Do not tamper with or attempt to make alterations to the machine.
▶ The machine is not intended for use by debilitated persons who have received no special training.
▶ Keep the machine out of reach of children.
▶ Do not touch rotating parts. Switch the machine 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, and 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 as effective a dust removal system 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 dust mask 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 persons in the vicinity must wear suitable protective goggles, a hard hat,
ear defenders, protective gloves and protective footwear while the machine is in use.
Power tool use and care
▶ Make sure that the machine is correctly secured to 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.
▶ Check that accessory tools are compatible with the machine's chuck/drive system and that they
are installed and secured correctly.
Electrical safety
▶ Do not use extension cords with multiple power outlets powering two or more devices in operation
at the same time.
▶ Operate the machine only when it is connected to an adequately rated power supply with a 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 machine
can become live, for example if you inadvertently damage electric wiring. This constitutes a serious risk
of electric shock.
▶ Make sure that the supply cord cannot be damaged as the carriage advances.
▶ Never operate the machine without the accompanying PRCD (machines without PRCD: Never
operate the machine without an isolating transformer). Test the PRCD each time before use.
▶ 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
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