Hilti AG 500-A22, Operator'S Manual

Page: 7 / 24

5
▶
Do not switch the power tool on again while the wheel is in the cut. Let the wheel reach full speed
and carefully re-insert it into the cut. The wheel can bind, walk up or kick back if the power tool is
restarted with the wheel in the cut.
▶
Support panels or large workpieces to minimize the risk of wheel bind and kickback. Large
workpieces tend to sag under their own weight. Supports must be placed under the workpiece on both
sides of the cutting wheel, both close to the line of cut and near the edge of the workpiece.
▶ Use extra caution when "plunge cutting" into existing walls or other blind areas. Kickback can
occur if the wheel slices into gas or water pipes, electric wiring or other objects as it plunge-cuts.
Safety instructions for wire brushing:
▶
Be aware that wire bristles are thrown by the brush even during ordinary operation. Do not overload
the wires by applying excessive pressure. The wire bristles can easily penetrate light clothing and/or
the skin.
▶ If the use of a guard is recommended for wire brushing, do not allow any interference of the wire
wheel or brush with the guard. Wire wheel or brush may expand in diameter due to work load and
centrifugal forces.
2.1.3 Additional safety instructions
Personal safety
▶
Only use the product if it is in perfect working order.
▶ Never tamper with or modify the tool in any way.
▶ Avoid touching rotating parts – risk of injury!
▶
Wear protective gloves also when changing the accessory tool. Touching the accessory tool presents a
risk of injury (cuts or burns).
▶ Before starting work, check the hazard class of the dust that will be produced when working. Use
an industrial vacuum cleaner with an officially approved protection class in compliance with the locally
applicable dust protection regulations. Dust from materials such as lead-based paint, certain types of
wood and concrete/masonry/stone containing quartz, minerals or metal may be harmful to health.
▶ Make sure that the workplace is well ventilated and, where necessary, wear a respirator appropriate for
the type of dust generated. Contact with or inhalation of the dust may cause allergic reactions and/or
respiratory or other 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). Material containing asbestos may be handled only by specialists.
▶
Take breaks between working and do physical exercises to improve the blood circulation in your fingers.
Exposure to vibration during long periods of work can lead to disorders of the blood vessels and nervous
system in the fingers, hands and wrists.
Electrical safety
▶
Before beginning work, check the working area for concealed electric cables or gas and water pipes.
External metal parts of the power tool may give you an electric shock if you damage an electric cable
accidentally.
Using and handling power tools with care
▶
Do not use cutting discs for grinding.
▶ Tighten the accessory tool and flange securely. If the accessory tool and flange are not tightened
securely, the accessory tool may work loose from the spindle due to the braking effect of the motor after
switching off.
▶
Comply with the manufacturer's instructions for handling and storing grinding discs.
2.1.4 Careful handling and use of batteries
▶
Observe the special guidelines applicable to the transport, storage and use of lithium-ion batteries.
▶ Do not expose batteries to high temperatures, direct sunlight or fire.
▶ Do not take apart, squash or incinerate batteries and do not subject them to temperatures over 80 °C.
▶
Do not attempt to charge or continue to use damaged batteries.
▶
If the battery is too hot to touch, it may be defective. In this case, place the power tool in a non-flammable
location, well away from flammable materials, where it can be kept under observation and left to cool
down. Contact Hilti Service after the battery has cooled down.
Printed: 26.01.2017 | Doc-Nr: PUB / 5292879 / 000 / 00 Printed: 26.01.2017 | Doc-Nr: PUB / 5292879 / 000 / 01