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CT13500-230S
Инструкция по эксплуатации Страница: 20

Crown CT13500-230S [20/176] Safety guidelines during power tool operation

English

Kickback and related warnings

Kickback is a sudden reaction to a pinched or snagged

rotating wheel, backing pad, brush or any other acces-

sory� Pinching or snagging causes rapid stalling of the

rotating accessory which in turn causes the uncon-

trolled 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 rm 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 guidelines during power tool

operation

Safety warnings specic for grinding and abrasive

cutting-off operations:

• Use only wheel types that are recommended for

your power tool and the specic guard designed

for the selected wheel. Wheels for which the power

tool was not designed cannot be adequately guarded

and are unsafe�

• 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 the 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 anges that are

of correct size and shape for your selected wheel.

Proper wheel anges support the wheel thus reducing

the possibility of wheel breakage� Flanges for cut-off

wheels may be different from grinding wheel anges.

• 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�

• When using cymbal-shaped grinding wheel,

you should ensure glass ber reinforced plastic

grinding wheel is used only.

• Principal axis, ange (especially the mounting

surface) or lock nut shall not be damaged to avoid

fracture of grinding wheel.

• Before the switch is turned on, you should

ensure the grinding wheel is not in touch with the

workpiece.

• Before the tool comes into use, you should let

the tool run for a while. Please note that vibration or

swing may indicate poor installation or imbalance

of the grinding wheel.

• Grinding shall be carried out on designated

surface of the grinding wheel.

• Attention should be paid to the ying sparks.

When holding the tool, you should avoid sparks’ ying

to you or other people or combustible�

• The tool shall not be left alone during operation.

You should operate the tool only when you hold it�

• You shall not touch the workpiece immediately

after operation considering that it might be very

hot and cause skin burns.

• Before the tool is used for any operation, you

should switch off the tool, pull out the power plug

or take out the battery box.

• Please follow instructions of the manufacturer

for proper installation and use of the grinding

wheel. Please be careful to handle and store the

grinding wheel�

• Do not use separate release casings or adapters

to t the large hole grinding wheel.

• Please use the ange specied for the tool.

• With respect to the tool used for installing

threaded hole grinding wheel, please ensure

thread in the grinding wheel is long enough and

could match the length of principal axis.

• Check and ensure that the workpiece is properly

supported.

• Please note that, after cutting off power supply

of the tool, the grinding wheel will continue to

rotate.

• Please use short circuit breaker (30mA) to

ensure safety of the operator when it is very hot

and moist in the workplace or you are seriously

polluted by conductive dust.

• Do not use the tool on any material containing

asbestos.

• Do not use water or grinding uid.

• Please ensure that the ventilation opening is

clean when working in dusty environment. If the

dirt must be removed, please cut off the power of the

tool (with non-metal article) to avoid damage to internal

parts�

Additional safety instructions for cutting-off

operations

• Do not position your body in line with and

behind the rotating 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�

• When wheel is binding or when interrupting a cut

for 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

Crown CT13500-230S [20/176] Safety guidelines during power tool operation

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