Inserting The Tool; Switching On And Off - Bosch GSB 450 RE PROFESSIONAL Instrucciones De Servicio

1 619 P00 788.book Seite 2 Freitag, 24. September 2004 8:40 08
Use suitable detectors to determine if util-
ity lines are hidden in the work area or call
the local utility company for assistance.
Contact with electric lines can lead to fire and
electric shock. Damaging a gas line can lead
to explosion. Penetrating a water line causes
property damage or may cause an electric
shock.
Switch off the power tool immediately
when the tool insert jams. Be prepared for
high reaction torque which causes kick-
back. The tool insert jams when:
– the power tool is subject to overload or
– it becomes wedged in the workpiece.
Hold the power tool only by the insulated
handles, when performing an operation
where the tool insert can run into hidden
wiring or its own mains cable. Contact with
a "live" wire can make metal parts of the power
tool "live" and lead to an electric shock.
Auxiliary Handle/Depth Stop
(see figure )
A
Operate the machine only with the auxiliary
handle 9.
The auxiliary handle can be mounted on the left
or right side of the spindle collar, using the wing
bolt 8.
The drilling depth can be set with the depth
stop 10.
Loosen wing bolt 7 and pull the depth stop out
until it is flush with the tip of the drill bit. On the
scale (arrow), subtract the required drilling
depth X from the scale value read and adjust.
9 • 1 619 P00 788 • 04.10

Inserting the Tool

Open the drill chuck 1 by turning until the tool can
be inserted. Insert the tool.
Clamp evenly in all three holes with the chuck
key 11.
Caution! The chuck may be very hot:
During longer working periods, especially
when impact drilling, the chuck can become
very hot. In this case we recommend wearing
protective gloves.
Screwdriving Tools (Accessories)
When using screwdriver bits, a bit holder should
always be used. Use only the screwdriver bits
that fit the screw head.
For driving screws, position the selector switch 3
to the symbol "Drilling and Driving".
Starting Operation
Observe correct mains voltage: The voltage of
the power source must agree with the voltage
specified on the nameplate of the machine.
Equipment marked with 230 V can also be con-
nected to 220 V.

Switching On and Off

To start the machine, press the On/Off switch 5.
The machine runs with variable
speed between 0 and maximum,
depending on the pressure applied
to the On/Off switch 5. Light pres-
sure results in a low rotational
speed thus allowing smooth, con-
trolled starts. Do not strain the machine so heav-
ily that it comes to a standstill.
Lock the pushed On/Off switch 5 by pressing the
lock-on button 4.
To switch off the machine, release the On/Off
switch 5 or, when locked on with the lock-on but-
ton 4, briefly press the On/Off switch 5 and then
release.
English - 2