MIRKA ARG-B 200 Instrucciones De Montaje página 343

Kickback is a sudden reaction to a pinched or snagged rotating wheel, backing pad, brush or any other accessory. Pinching
or snagging causes rapid stalling of the rotating accessory which in turn causes the uncontrolled power tool to be forced
in the direction opposite of the accessory s rotation.
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.
a. Maintain a firm grip on the power tool and position your body and arm to allow you to resist kickback
forces. The operator can control kickback forces, if proper precautions are taken.
b. 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.
c. Do not attach a toothed saw blade. Such blades create frequent kickback and loss of control.
d. Always feed the bit into the material in the same direction as the cutting egde is exiting from the material
(which is the same direction as the chips are thrown). Feeding the tool in the wrong direction causes the cutting
edge of the bit to climb out of the work and pull the tool in the direction of this feed.
e. When using rotary files, cut-off wheels, high-speed cutters or tungsten carbide cutters, always have the
work securely clamped. These wheels will grab if they become slightly canted in the groove, and can kickback.
When a cut-off wheel grabs, the wheel itself usually breaks. When a rotary file, high-speed cutter or tungsten
carbide cutter grabs, it may jump from the groove and you could lose control of the tool.
Safety warnings specific for grinding and abrasive cutting-off
operations
Use only wheel types that are recommended for your power tool and only for recommended applications.
a.
For example: do not grind with the side of a cut-off wheel. Abrasive cut-off wheels are intended for peripheral
grinding, side forces applied to these wheels may cause them to shatter.
For threaded abrasive cones and plugs use only undamaged wheel mandrels with an unrelieved shoulder
b.
flange that are of correct size and length. Proper mandrels will reduce the possibility of breakage.
Do not jam a cut-off wheel or apply excessive pressure. Do not attempt to make an excessive depth of
c.
cut. Overstressing the wheel increases the loading and susceptibility to twisting or snagging of the wheel in the
cut and the possibility of kickback or wheel breakage.
d. Do not position your hand in line with and behind the rotating wheel. When the wheel, at the point of operation,
is moving away from your hand, the possible kickback may propel the spinning wheel and the power tool directly
at you.
e. When wheel is pinched, snagged 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
cut-off wheel from the cut while the wheel is in motion otherwise kickback may occur. Investigate and take
corrective action to eliminate the cause of wheel pinching or snagging.
Do not restart the cutting operation in the workpiece. Let the wheel reach full speed and carefully re-enter
f.
the cut. The wheel may bind, walk up or kickback if the power tool is restarted in the workpiece.
Support panels or any oversized workpiece to minimize the risk of wheel pinching and kickback. Large
g.
workpieces tend to sag under their own weight. Supports must be placed under the workpiece near the line of
cut and near the edge of the workpiece on both sides of the wheel.
h. Use extra caution when making a pocket cut into existing walls or other blind areas. The protruding wheel
may cut gas or water pipes, electrical wiring or objects that can cause kickback.
Safety rules for battery pack and charger
Important safety and operating instructions for your battery and charger. Before using the charger, read all instructions
and warnings on the charger, the battery pack and the tool.
If the battery pack casing is cracked or damaged, do not insert into charger. There is a danger of electric shock or
electrocution.
Do not allow any liquid to get inside charger. Electric shock may result.
This charger is not intended for any uses other than charging rechargeable batteries.
Do not place any object on top of the charger, near any heat source or place the charger on a soft surface that may
result in excessive internal heat.
Mirka® ARG-B 200 Cordless grinder
en | us-ca
343