Metabo W 720-115 Operations Instructions download pdf (Page 6)

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m) 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.

n) 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.

o) Do not operate the power tool near

flammable materials. Sparks could ignite these

materials.

p) Do not use accessories that require

liquid

coolants. Us

ing water or other liquid coolants may

result in electrocution or shock.

4.2 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.

a) Maintain a firm grip on the power tool

and

position your body an

d 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.

b) Never place your hand near the rotating

accessory. Accessory may kickback over your

hand.

c) Do not position your body in the area wher

ower tool will move if kickback occurs.

Kickback will propel the tool in direction opposite to

the wheel’s movement at the point of snagging.

d) Use special care when working corner

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.

e) Do not attach a saw chain woodcarvin

blade or toothed saw blade. Such blades create

frequent kickback and loss of control.

4.3 Safety Warnings Specific for Grinding

and Cutting-Off Operations:

a) 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.

b) The guard must be securely attached to th

pow

er tool and positioned for maximum safety,

so the least amount of wheel is exposed

tow

ards the operator. The guard helps to protect

the operator from broken fragments, accidental

contact with the wheel and sparks that could ignite

clothing.

c) 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.

d) 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.

e) Do not use worn down wheels from larger

power tools. Wheels intended for larger power

tools are not suitable for the higher speed of a

smaller tool and may burst.

4.4 Additional Safety Warnings Specific for

Abrasive Cutting-Off Operations:

a) Do not “jam” the cut-off wheel or ap

ply

excessive p

ressure. Do not attempt to make an

excessive depth of cut. Overstressing the wheel

increases the loading and susceptibility to twisting

or binding of the wheel in the cut and the possibility

of kickback or wheel breakage.

b) Do not position your

body in line with and

behind the rotati

ng wheel. When the wheel, at the

point of operation, is moving away from your body,

the possible kickback may propel the spinning

wheel and the power tool directly at you.

c) When wheel is binding or when interrup

ting

a cut fo

r any reason, switch off the power tool

and hold the power tool motionless until the

wheel comes to a complete stop. Never attempt

to remove the cut-off wheel from the cut while

the wheel is in motion otherwise kickback may

occur. Investigate and take corrective action to

eliminate the cause of wheel binding.

d) Do not restart the cutting operation in th

wor

kpiece. Let the wheel reach full speed and

carefully reenter the cut. The wheel may bind,

walk up or kickback if the power tool is restarted in

the workpiece.

e) Support panels or any oversized workpiec

minimize the risk of wheel pinching and

kickback.Large workpieces tend to sag under their

own weight. Supports must be placed under the

workpiece near the line of cut and near the edge

of the workpiece on both sides of the wheel.

f) Use extra caution when making a "pocke

cut" into

existing walls or other blind areas. The

protruding wheel may cut gas or water pipes,

electrical wiring or objects that can cause kickback.

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Metabo W 720-115 Operations Instructions Page 6

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