Hilti DD 150-U, Manual

Page: 36 / 534

28 English 434949
*434949*
Service
▶ Have your power tool serviced by a qualified repair person using only identical replacement parts.
This will ensure that the safety of the power tool is maintained.
2.2 Diamond drill safety warnings
▶ When performing drilling that requires the use of water, route the water away from the operator’s
work area or use a liquid collection device.
Such precautionary measures keep the operator’s work
area dry and reduce the risk of electrical shock.
▶ Operate power tool by insulated grasping surfaces, when performing an operation where the
cutting accessory may contact hidden wiring or its own cord.
Cutting accessory contacting a “live”
wire may make exposed metal parts of the power tool “live” and could give the operator an electric
shock.
▶ Wear hearing protection when diamond drilling. Exposure to noise can cause hearing loss.
▶
When the bit is jammed, stop applying downward pressure and turn off the tool. Investigate and
take corrective actions to eliminate the cause of the bit jamming.
▶ When restarting a diamond drill in the workpiece check that the bit rotates freely before starting. If
the bit is jammed, it may not start, may overload the tool, or may cause the diamond drill to release from
the workpiece.
▶
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 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.
▶ Do not use this tool for overhead drilling with water supply. Water entering the power tool will
increase the risk of electric shock.
2.3 Additional safety instructions
Personal safety
▶ Do not tamper with or attempt to make alterations to the tool.
▶ Keep the grips dry, clean and free from oil and grease.
▶
Make sure that the side handle is fitted correctly and tightened securely. Always hold the tool
firmly with both hands on the grips provided.
▶ Assemble the mount correctly before installing the power tool. Correct assembly is important in
order to avoid the risk of collapse.
▶ Before starting to use the power tool, secure it firmly in the mount. Slippage of the power tool in the
mount can lead to loss of control.
▶ 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.
▶ Improve the blood circulation in your fingers by relaxing your hands and exercising your fingers
during breaks between working.
▶ The machine is not intended for use by debilitated persons who have received no special training.
Keep the machine out of reach of children.
▶ Avoid touching rotating parts. Switch the machine on only after it is in position at the workpiece.
Touching rotating parts, especially rotating accessory tools, may lead to injury.
▶ When working, always guide the supply cord, the extension cable, the suction hose and the water
hose to the rear and away from the machine.
This reduces the risk of tripping over cables or hoses
while work is in progress.
▶ Avoid skin contact with drilling slurry.
▶ 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 are classified as carcinogenic such as oak and beech
dust especially in conjunction with additives for wood conditioning (chromate, wood preservative).
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 tool. Ensure that the workplace is well ventilated. The
Printed: 09.08.2019 | Doc-Nr: PUB / 5069546 / 000 / 09