Ryobi P421 Manuel d'utilisation et d'entretien télécharger pdf (Page 4)

4 — English

ANGLE GRINDER SAFETY WARNINGS

 Keep bystanders a safe distance away from work area.

Anyone entering the work area must wear personal

protective equipment. Fragments of workpiece or of a

broken accessory may fly away and cause injury beyond

immediate area of operation.

Hold the power tool by insulated gripping surfaces

only, when performing an operation where the cutting

accessory may contact hidden wiring or its own cord.

Contact with a “live” wire may make exposed metal parts

of the power tool “live” and could give the operator an

electric shock.

 Position the cord clear of the spinning accessory. If

you lose control, the cord may be cut or snagged and your

hand or arm may be pulled into the spinning accessory.

 Never lay the power tool down until the accessory

has come to a complete stop. The spinning accessory

may grab the surface and pull the power tool out of your

control.

 Do not run the power tool while carrying it at your

side. Accidental contact with the spinning accessory

could snag your clothing, pulling the accessory into your

body.

 Regularly clean the power tool’s air vents. The motor’s

fan will draw the dust inside the housing and excessive

accumulation of powdered metal may cause electrical

hazards.

 Do not operate the power tool near flammable

materials. Sparks could ignite these materials.

 Do not use accessories that require liquid coolants.

Using water or other liquid coolants may result in

electrocution or shock.

KICKBACK AND RELATED WARNINGS

Kickback is a sudden reaction to a pinched or snagged

rotating wheel, backing pad, brush or any other accessory.

Pinching or snagging causes rapid stalling of the rotating

accessory which in turn causes the uncontrolled power tool

to be forced in the direction opposite of the accessory’s

rotation at the point of the binding.

For example, if an abrasive wheel is snagged or pinched by

the workpiece, the edge of the wheel that is entering into the

pinch point can dig into the surface of the material causing

the wheel to climb out or kick out. The wheel may either jump

toward or away from the operator, depending on direction

of the wheel’s movement at the point of pinching. Abrasive

wheels may also break under these conditions.

Kickback is the result of power tool misuse and/or incorrect

operating procedures or conditions and can be avoided by

taking proper precautions as given below.

 Maintain a firm grip on the power tool and position

your body and arm to allow you to resist kickback

forces. Always use auxiliary handle, if provided, for

maximum control over kickback or torque reaction

during start-up. The operator can control torque

reactions or kickback forces, if proper precautions are

taken.

 Never place your hand near the rotating accessory.

Accessory may kickback over your hand.

 Do not position your body in the area where power

tool will move if kickback occurs. Kickback will propel

the tool in direction opposite to the wheel’s movement

at the point of snagging.

 Use special care when working corners, sharp edges,

etc. Avoid bouncing and snagging the accessory.

Corners, sharp edges or bouncing have a tendency to

snag the rotating accessory and cause loss of control or

kickback.

 Do not attach a saw chain woodcarving blade or

toothed saw blade. Such blades create frequent

kickback and loss of control.

SAFETY WARNINGS SPECIFIC FOR GRINDING

OPERATIONS

 Use only wheel types that are recommended for your

power tool and the specific guard designed for the

selected wheel. Wheels for which the power tool was not

designed cannot be adequately guarded and are unsafe.

 The grinding surface of centre depressed wheels

must be mounted below the plane of the guard lip.

An improperly mounted wheel that projects through the

plane of the guard lip cannot be adequately protected.

 The guard must be securely attached to the power

tool and positioned for maximum safety, so the least

amount of wheel is exposed towards the operator.

The guard helps to protect operator from broken wheel

fragments, accidental contact with wheel and sparks that

could ignite clothing.

 Wheels must be used only for recommended

applications. For example: do not grind with the side

of cut-off wheel. Abrasive cut-off wheels are intended for

peripheral grinding, side forces applied to these wheels

may cause them to shatter.

 Always use undamaged wheel flanges that are of

correct size and shape for your selected wheel.

Proper wheel flanges support the wheel thus reducing the

possibility of wheel breakage. Flanges for cut-off wheels

may be different from grinding wheel flanges.

 Do not use worn down wheels from larger power tools.

Wheel intended for larger power tool is not suitable for

the higher speed of a smaller tool and may burst.

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Ryobi P421 Manuel d'utilisation et d'entretien Page 4

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