Ratio MSR600M Manual Del Usuario página 42

The table below gives you advice on how to
choose correct blade.
blade
Cutting material
type
TCT 24T Wood and aluminum
Thin aluminum, PVC pipe,
HSS 60T
plastic
Concrete, marble, tile , cement
Diamond
backerboard
Recommended maximum material thickness
Wood
Aluminum
PVC pipe (radius)
Tile
2. KICKbACK (SEE FIG. C1, C2)
The Causes of Kickback
1. Kickback is a sudden reaction to a pinched,
bound or misaligned saw blade, which causes
an uncontrolled saw to lift up and out of the
workpiece and toward the operator.
2. 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 towards
the operator.
3. 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. This
causes the blade to climb out of the kerf and jump
back towards the operator.
4. Sawing into knots or nails in the workpiece can
cause Kickback.
5. Sawing into wet or warped lumber can cause
Kickback.
6. Forcing a cut, or not supporting the workpiece
correctly can cause Kickback (See Fig. G1,G2).
7. Kickback is a result of tool misuse and/or
incorrect operating procedures or conditions.
It can be avoided by taking the proper
precautions, as listed below.
Fig.C1
Correct blade depth
42
WAyS TO hELP PREVENT KICKbACK
1. ALWAYS maintain a firm grip with both hands
22mm
on the saw (See Fig. E) and position your body
2mm and arms to allow you to resist Kickback forces.
Kickback forces can be controlled by the operator,
11mm
if the proper precautions are taken.
6mm
2. If the blade is binding, or when you are
interrupting a cut for any reason, ALWAYS 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. CHECK and take
corrective action to eliminate the cause of blade
binding.
3. Inspect the workpiece for knots or nails before
cutting. Never saw into a knot or nail.
4. DO NOT cut warped or wet lumber.
5. ALWAYS support large panels to minimize the
risk of blade pinching and Kickback.
Large panels tend to sag under their own weight.
Supports MUST be placed under the panel, one
near the line of cut and one near the edge of the
panel. (See Fig. D1,D2)
6. When restarting the saw in the workpiece,
CENTER the blade in the kerf and check to be
sure that the saw teeth are not engaged into the
material. If the saw blade is binding, it may walk
up or Kickback from the workpiece when the saw
is restarted.
7. DO NOT use a dull or damaged blade.
Unsharpened, improperly set, or gummed-
up blades produce narrow kerf which causes
excessive friction, blade binding and Kickback.
8. KEEP the blade at the correct depth setting.
The depth setting should not exceed 1-1/4inch
below the material being cut (See Fig. I). BE
SURE that the blade depth and adjusting locking
lever is tight and secure BEFORE making a cut. If
Cutting
direction
blade adjustment shifts while cutting it may cause
binding and Kickback.
9. USE EXTRA CAUTION when plunge cutting
making a "Pocket Cut" into existing walls or other
Fig.C2
Blade is set too deep