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Bosch PSB 1000-2 RCA Manual

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22 | English 2 609 002 333 • 4.6.07
To switch off the machine, release the On/Off switch
9 or when it is locked with the lock-on button 8, briefly
press the On/Off switch 9 and then release it.
Gear Selection, Mechanical
f Actuate the gear selector 11 only when the
machine is at a standstill.
Two speed ranges can be preselected with the gear
selector 11.
1st gear:
Low speed range; for working with large
drilling diameter or for driving screws.
2nd gear:
High speed range; for working with small
drilling diameter.
PSB 1000-2 RCE/PSB 1000-2 RCA:
Position “S”:
Low speed range; for working with high
torque, e.g. when working with core bits
or for driving screws.
If the gear selector 11 cannot be fully engaged, lightly
rotate the drive spindle with the drill bit by twisting the
drill chuck.
Overload Protection
(PSB 1000-2 RCE/PSB 1000-2 RCA)
f If the tool insert becomes caught or jammed,
the drive to the drill spindle is interrupted.
Because of the forces that occur, always hold
the power tool firmly with both hands and
provide for a secure stance.
The overload protection indicator 6 flashes when the
machine is subject to excessive load. Reduce the load
to continue working.
When overloading, the power tool switches off and the
overload protection indicator 6 lights up continuously.
Release the On/Off switch 9 and switch the machine
on again to continue working.
The overload protection indicator 6 lights up continu-
ously when the gear selector 11 is in the “S” position.
f The overload protection is deactivated when
the gear selector 11 is in the “S” position. Be
prepared for high reaction torque when the
drilling tool jams.
After longer periods of working at low speed, allow the
machine to cool down by running it for approx.
3 minutes at maximum speed with no load.
Adjusting the Speed/Impact Frequency
The speed/impact rate of the switched on power tool
can be variably adjusted, depending on how far the
On/Off switch 9 is pressed.
Light pressure on the On/Off switch 9 results in low
speed/impact rate. Further pressure on the switch
increases the speed/impact rate.
Preselecting the Speed/Impact Frequency
(see figure M)
(PSB 700-2 RE/PSB 780-2 RE/PSB 800-2 RA)
With the thumbwheel for speed preselection 30, the
required speed/impact frequency can be preselected
even during operation.
The required speed/impact frequency depends on the
material and the working conditions, and can be deter-
mined through practical testing.
Electronic Speed Preselection (Speed Control)
(PSB 1000-2 RCE/PSB 1000-2 RCA)
With the “Speed Control” thumbwheel 7, the required
speed/impact frequency can be preselected even dur-
ing operation.
The required speed/impact frequency depends on the
material and the working conditions, and can be deter-
mined through practical testing.
I:
For working with low speed.
II:
For working with medium speed.
III:
For working with high speed.
For working with maximum speed.
Operating Instructions
f Apply the power tool to the screw/nut only
when it is switched off. Rotating tool inserts can
slip off.
Tips
After longer periods of working at low speed, allow the
machine to cool down by running it for approx.
3 minutes at maximum speed with no load.
For drilling in tiles, set the selector switch 2 to the “Drill-
ing” symbol. Do not switch over to the symbol “Impact
Drilling” or work with impact until after drilling through
the tile.
Use carbide tipped drill bits when working in concrete,
masonry and brick wall.
OBJ_BUCH-79-006.book Page 22 Monday, June 4, 2007 4:08 PM
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