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DeWalt DW400 Guide D'utilisation page 11

Rectifieuse coudée de 115 mm (4-1/2 po)
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EDGE GRINDING WITH GRINDING WHEELS
WARNING: Edge grinding and cutting can be performed only with
Type 27 wheels that are designed and specified for this purpose.
WARNING: Wheels used for cutting and edge grinding may
break or kick back if they bend or twist while the tool is being used
to do cut-off work or deep grinding. To reduce the risk of serious
injury, limit the use of these wheels with a standard Type 27 guard
to shallow cutting and notching (less than 1/2" in depth). The open
side of the guard must be positioned away from the operator.
1. Allow the tool to reach full speed before touching the tool to the
work surface.
2. Apply minimum pressure to the work
surface, allowing the tool to operate at
high speed. Grinding rate is greatest
when the tool operates at high speed.
3. Position yourself so that the open-under-
side of the wheel is facing away from
you.
4. Once a cut is begun and a notch is
established in the workpiece, do not
change the angle of the cut. Changing
the angle will cause the wheel to bend
and may cause wheel breakage.
5. Remove the tool from the work surface
before turning the tool off. Allow the tool
to stop rotating before laying it down.
WARNING: Do not use edge grinding/cutting wheels for surface
grinding applications because these wheels are not designed for
side pressures encountered with surface grinding. Wheel breakage
and injury may result.
SURFACE FINISHING WITH SANDING FLAP DISCS
1. Allow the tool to reach full speed before touching the tool to the
work surface.
2. Apply minimum pressure to work surface, allowing the tool to
operate at high speed. Sanding rate is greatest when the tool
operates at high speed.
3. Maintain a 5˚ to 10˚ angle between
the tool and work surface.
4. Continuously move the tool in a
forward and back motion to avoid
creating gouges in the work surface.
5. Remove the tool from work surface before turning tool off. Allow
the tool to stop rotating before laying it down.
MOUNTING SANDING BACKING PADS
CAUTION: Turn off and unplug the tool before making any
adjustments or removing or installing attachments or acces-
sories. Before reconnecting the tool, actuate and release
switch to ensure that the tool is off.
CAUTION: The proper guard must be re-
installed for the grinding wheel, sanding flap
disc, wire brush or wire wheel applications
after sanding applications are complete.
1. Push the hub of the disc nut (M) through
the center of the sanding disc (L), as far
as it will go, and also through the backing
disc (K).
2. Assemble the disc nut hub (J), backing
pad, sanding disc, and disc nut as
shown.
3. Be sure the disc nut extends through the
discs into the disc nut hub.
9
5˚-10˚
J
K
L
M

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