Preparation - Dremel 4200 Traduction De La Notice Originale

s. Do not use accessories that require liquid coolants.
Using water or other liquid coolants may result in
electrocution or shock.
t. Use completely unrolled and safe extension cords
with a capacity of 5 Amps at least.
KICKBACK AND RELATED WARNINGS
Kickback is a sudden reaction to a pinched or snagged
rotating wheel, sanding band, 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 edge 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
a. Use only wheel types that are recommended for your
power tool and only for recommended applications. 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.
b. For threaded abrasive cones and plugs use only
undamaged wheel mandrels with an unrelieved
shoulder flange that are of correct size and length.
Proper mandrels will reduce the possibility of breakage.
c. Do not "jam" a cut-off wheel or apply excessive
pressure. Do not attempt to make an excessive depth
of 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.
f. Do not restart the cutting operation in the workpiece.
Let the wheel reach full speed and carefully re-enter the
cut. The wheel may bind, walk up or kickback if the power
tool is restarted in the workpiece.
g. Support panels or any oversized workpiece to
minimize the risk of wheel pinching and kickback. Large
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 WARNINGS SPECIFIC FOR WIRE
BRUSHING OPERATIONS
a. Be aware that wire bristles are thrown by the brush
even during ordinary operation. Do not overstress the
wires by applying excessive load to the brush. The wire
bristles can easily penetrate light clothing and/or skin.
b. Allow brushes to run at operating speed for at least
one minute before using them. During this time no
one is to stand in front or in line with the brush. Loose
bristles or wires will be discharged during the run-in time.
c. Direct the discharge of the spinning wire brush away
from you. Small particles and tiny wire fragments may be
discharged at high velocity during the use of these brushes
and may become imbedded in your skin.

PREPARATION

Always unplug the tool from the power source
before you make any adjustments, change
accessories, service, clean, etc. This reduces the
risk of starting the tool accidentally.
FIRST USE
The carbon brushes in your tool have been engineered for
many hours of dependable service. To prepare the brushes
for use, run the tool at full speed for 5 minutes under no
load. This will properly "seat" the brushes, and extend the
life of the tool.
CHANGING COLLETS
Always use the collet which matches the shank size of the
accessory you plan to use. Never force a larger diameter
shank into a collet. Collet sizes can be identified by the
rings on the back end of the collet. Refer to figure 1.
• 3.2mm / 1/8" Collet with no rings
Use 4200 specific collets only.
1. Remove a collet (J) from the EZ Change
Refer to figure 1 and 1.
a. Use needle nose pliers to lightly depress the
finger (L) of the collet until it is clear of the detent
feature (K).
b. Pull and hold both EZ Change
(unlock).
c. Pull the collet free from the chuck.
d. Release the EZ Change
2. Install a new collet by inserting the narrow end of the
new collet completely into the EZ Change
16
™
chuck (I).
™
levers to the back
™
levers.
™
chuck.