Bosch DG250C Consignes De Fonctionnement/Sécurité page 9

BM 3609929C22 09-11:BM 3609929C22 09-11.qxp 9/27/11 7:10 AM Page 9
Disconnect the plug from
WARNING
the power source before
making any assembly, adjustments or
changing accessories. Such preventive
safety measures reduce the risk of starting
the tool accidentally.
SELECTING GRINDING ACCESSORIES
Before using a grinding wheel
WARNING
point or cone, be certain
that its maximum safe operating speed is
not exceeded by the nameplate speed of
the grinder. Do not exceed the recommended
wheel point or cone diameter.
INSTALLING ACCESSORIES
Be sure that the diameter of
WARNING
the shank is the same size
as the inside diameter of the collet.
To prevent damage to collet,
CAUTION
avoid excessive tightening of
the collet nut when there is no accessory inserted.
Only use properly fitting and undamaged open-
end wrenches.
1. Place a open-end wrench onto the spindle
to prevent the spindle from rotating (Fig. 2).
Hold the tool with both
WARNING
hands while starting the
tool, since torque from the motor can
cause the tool to twist.
SLIDE ON-OFF SWITCH WITH LOCK
The tool is switched "ON" by the switch button
located at the side of the motor housing. The
switch can be locked in the "ON" position, a
convenience for long grinding operations.
TO TURN THE TOOL "ON" without locking it,
slide the switch button forward by applying
pressure ONLY at the REAR portion of the
button. When pressure is released the switch
button will snap to "OFF" position.
TO LOCK THE SWITCH "ON", slide the switch
button forward and press "IN" the FRONT
portion.
TO UNLOCK THE SWITCH, simply press and
release the REAR portion of the button.
Switch is spring loaded and will snap back
automatically.
Assembly
2. Hold wrench in place and rotate collet nut
counter-clockwise with another open-end
wrench.
3. Insert three fourths of shank of accessory
into the collet and securely tighten collet nut
clockwise.
Repeat steps 1 and 2 of above and remove
accessory.
SHANK OF
ACCESSORY
Operating Instructions
Your tool is equipped with an internal
electronic feedback system that provides a
"soft start", which will reduce the stresses that
occur from a high torque start. The system
also helps to keep the preselected speed
virtually constant between no-load and load
conditions.
(Models DG355LCE & DG490CE only)
This tool is equipped with a variable speed
dial. The speed may be controlled during
operation by presetting the dial in any one of
six positions.
Dial
Setting
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REMOVING ACCESSORIES
FIG. 2
SPINDLE LOCK
WRENCH
COLLET
ELECTRONIC FEEDBACK
VARIABLE SPEED DIAL
RPM
DG355LCE
1 10,000
2 14,000
3 18,000
4 22,000
5 26,000
6 30,000
COLLET NUT
WRENCH
RPM
DG490CE
2,500
3,600
4,700
5,800
6,900
8,000