Makita 5093DZ Manual de instruções - Página 5

Procurar online ou descarregar pdf Manual de instruções para Ferramenta eléctrica Makita 5093DZ. Makita 5093DZ 20 páginas. 85 mm (3-3/8”)

11.

Causes and Operator Prevention

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

opera tor.

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 operator.

Kickback is the result of tool misuse and/or incorrect operating procedures

or conditions and can be avoided by taking proper precautions as given below.

Maintain a firm grip

with

both hands on the saw and position your body and

arm t o allow you t o resist KICKBACK forces. KICKBACK forces can be

controlled by the operator, if proper precautions are taken.

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

t o a complete stop. Never attempt t o 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 t o eliminate the cause of blade binding.

When restarting a saw in the workpiece, center 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.

Support large panels t o minimize the risk of blade pinching and KICKBACK.

Large panels tend t o sag under their o w n weight. Supports must be placed

under the panel on both sides, near the line of cut and near the edge of the

panel as shown in Fig. 1.

To minimize the risk of blade pinching and kickback. When cutting operation

requires the resting of the saw on the work piece, the saw shall be rested

on the larger portion and the smaller piece cut off.

To avoid kickback do support board

or panel near the cut.

Don't support board or panel away

from the cut.

Fig. 1

Fig.