Bosch PSB 500 Instrucciones De Servicio página 10

Keyless Chuck
(0 603 387 7.. – see figure
Hold the rear collar tight and firmly tighten the
front collar by hand, until the "clicking" of the lock-
ing action is no longer heard. This automatically
locks the chuck.
The locking is released again when the front col-
lar is turned in the opposite direction to remove
the tool.
Key Chuck (0 603 387 0../0 603 387 1../
0 603 387 6.. – see figure
Clamp evenly in all three holes with the chuck
key 12.
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.
Screwdriver Tools
(Accessory – see figure
When using screwdriver bits 14, a bit holder 15
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".
Initial 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
and keep it depressed.
0 603 387 6../0 603 387 7../
0 603 387 5..: The machine runs
with variable speed between 0 and
maximum, depending on the pres-
sure applied to the On/Off switch 5.
Light pressure results in a low rota-
tional speed thus allowing smooth,
controlled starts. Do not strain the
machine so heavily 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 push and release it then.
10 • 2 609 932 246 • 03.07
)
C
)
D
)
E
English - 3
Reversing the Rotational Direction
(0 603 387 6../0 603 387 7../
0 603 387 5..)
Operate the
switch 7 only at a standstill.
Using the rotational direction switch 7, the direc-
tion of rotation of the machine can be changed
(by actuating the On/Off switch 5, the rotational
direction switch 7 can be locked).
Right Rotation (see figure
Press the rotational direction switch through to
the left stop (for drilling, impact drilling, driving
screws, etc.).
Left Rotation (see figure
Press the rotational direction switch through to
the right stop (for loosening and unscrewing
screws and nuts).
Two-step Switch (0 603 387 1..)
Two speed ranges can be preselected with the
On/Off switch 5. The machine switches from the
first to the second speed step after a noticeable
pressure point has been exceeded:
Rotational speed step I:
Rotational speed step II:
The On/Off switch can be locked in either of the
speed steps with the lock-on button 4.
Speed Preselection (0 603 387 5..)
The required speed can be preselected with the
thumbwheel 6 (also while running).
Drilling, Screwdriving and
Impact Drilling
Drilling and Screwdriving
Set the selector switch 3 to the "Drilling
and Screwdriving" symbol.
Impact Drilling
Set the selector switch 3 to the "Impact
Drilling" symbol.
The selector switch 3 engages noticeably and
can be actuated with the machine running.
rotational direction
F )
G )
2 500 rpm
3 000 rpm