Porter-cable 447k Manuel d'utilisateur télécharger pdf (Page 4)

SPECIFIC SAFETY RULES AND SYMBOLS FOR CIRCULAR

SAWS

1. DANGER! Keep hands away from cutting area and blade. Keep your

second hand on auxiliary handle or motor housing. If both hands are

holding the saw, they cannot be cut by the blade.

2. Keep your body positioned to either side of the saw blade, but not in

line with the saw blade. KICKBACK could cause the saw to jump

backwards. (See "Causes and Operator Prevention of KICKBACK.")

3. Do not reach underneath the work. The guard cannot protect you from

the blade below the work.

4. Check lower guard for proper closing before each use. Do not

operate saw if lower guard does not move freely and close instantly.

Never clamp or tie the lower guard into the open position. If saw is

accidentally dropped, lower guard may be bent. Raise the lower guard with

the Retracting Handle and make sure it moves freely and does not touch the

blade or any other part, in all angles and depths of cut.

5. Check the operation and condition of the lower guard spring. If the

guard and the spring are not operating properly, they must be serviced

before use. Lower guard may operate sluggishly due to damaged parts,

gummy deposits, or a buildup of debris.

6. Lower guard should be retracted manually only for special cuts

such as “Pocket Cuts” and “Compound Cuts.” Raise lower guard by

Retracting Handle. As soon as blade enters the material, lower guard

must be released. For all other sawing, the lower guard should operate

automatically.

7. Always observe that the lower 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.

8. NEVER hold piece being cut in your hands or across your Ieg. It is

important to support the work properly to minimize body exposure, blade

binding, or loss of control.

9. Hold tool by insulated gripping surfaces when performing an

operation where the cutting tool may contact hidden wiring. Contact with

a “live” wire will also make exposed metal parts of the tool “live” and shock

the operator.

10. When ripping always use a rip fence or straight edge guide. This

improves the accuracy of cut and reduces the chance for blade binding.

11. Always use blades with correct size and shape (diamond vs. round)

arbor holes. Blades that do not match the mounting hardware of the saw

will run eccentrically, causing loss of control.

12. Never use damaged or incorrect blade washers or bolts. The blade

washers and bolt were specially designed for your saw, for optimum

performance and safety of operation.

13. 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 tool misuse and/or incorrect operating procedures or

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

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Porter-cable 447k Manuel d'utilisateur Page 4

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