Handleiding DeWalt DC351KL (pagina 37 van 170) (Nederlands, Duits, Engels, Frans, Italiaans, Portugees, Spaans, Pools, Turks, Deens, Zweeds, Noors, Fins)

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wiring. Contact with a "live" wire will also make

exposed metal parts of the power tool "live" and

shock the operator.

f) When ripping always use a rip fence or

straight edge guide. This improves the

accuracy of cut and reduces the chance of

blade binding.

g) Always use blades with correct size and

shape (diamond versus round) of arbour

holes. Blades that do not match the mounting

hardware of the saw will run eccentrically,

causing loss of control.

h) Never use damaged or incorrect blade

washers or bolt. The blade washers and

bolt were specially designed for your saw, for

optimum performance and safety of operation.

Causes and Operator Prevention

of Kickback

– Kickback is a sudden reaction to a pinched,

bound or misaligned saw blade, causing an

uncontrolled saw to lift up and out of the

workpiece toward the operator;

– When the blade is pinched or bound tightly

by the kerf closing down, the blade stalls and

the motor reaction drives the unit rapidly back

toward the operator;

– If the blade becomes twisted or misaligned

in the cut, the teeth at the back edge of the

blade can dig into the top surface of the wood

causing the blade to climb out of the kerf and

jump back toward the operator.

Kickback is the result of saw misuse and/or incorrect

operating procedures or conditions and can be

avoided by taking proper precautions as given

below:

a) Maintain a firm grip with both hands on

the saw and position your arms to resist

kickback forces. Position your body to

either side of the blade, but not in line with

the blade. Kickback could cause the saw to

jump backwards, but kickback forces can be

controlled by the operator, if proper precautions

are taken.

b) When blade is binding, or when interrupting

a cut for any reason, release the trigger and

hold the saw motionless in the material until

the blade comes to a complete stop. Never

attempt to remove the saw from the work

or pull the saw backward while the blade is

in motion or kickback may occur. Investigate

and take corrective actions to eliminate the

cause of blade binding.

c) When restarting a saw in the workpiece,

centre the saw blade in the kerf and check

that saw teeth are not engaged into the

material. If saw blade is binding, it may walk up

or kickback from the workpiece as the saw is

restarted.

d) Support large panels to minimise the risk of

blade pinching and kickback. Large panels

tend to sag under their own weight. Supports

must be placed under the panel on both sides,

near the line of cut and near the edge of the

panel.

e) Do not use dull or damaged blades.

Unsharpened or improperly set blades produce

narrow kerf causing excessive friction, blade

binding and kickback.

f) Blade depth and bevel adjusting locking

levers must be tight and secure before

making cut. If blade adjustment shifts while

cutting, it may cause binding and kickback.

g) Use extra caution when making a “plunge

cut” into existing walls or other blind areas.

The protruding blade may cut objects that can

cause kickback.

Safety instructions for

plunge-type saws

a) Check guard for proper closing before

each use. Do not operate the saw if guard

does not move freely and enclose the

blade instantly. Never clamp or tie the

guard with the blade exposed. If saw is

accidentally dropped, guard may be bent.

Check to make sure that guard moves freely

and does not touch the blade or any other

part, in all angles and depths of cut.

b) Check the operation and condition of the

guard return spring. If the guard and the

spring are not operating properly, they

must be serviced before use. Guard may

operate sluggishly due to damaged parts,

gummy deposits, or a build-up of debris.

c) Assure that the guide plate of the saw will

not shift while performing the “plunge cut”

when the blade bevel setting is not at 90°.

Blade shifting sideways will cause binding

and likely kickback.

d) Always observe that the guard is covering

the blade before placing saw down on

bench or floor. An unprotected, coasting

blade will cause the saw to walk backwards,

cutting whatever is in its path. Be aware of

the time it takes for the blade to stop after

switch is released.

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