Working Advice; Maintenance And Service; Maintenance And Cleaning; After-Sales Service And Application Service - Bosch PSB 850-2 RE Notice Originale

OBJ_BUCH-875-004.book Page 20 Monday, October 27, 2014 4:30 PM
20 | English
Setting the operating mode
Drilling and Screwdriving
Set the selector switch 4 to the "Drilling" symbol.
Impact Drilling
Set the selector switch 4 to the "Impact drilling"
symbol.
The selector switch 4 engages noticeably and can also be ac-
tuated with the machine running.
Gear selection, mechanical
 The gear selector 11 can be actuated on machines run-
ning at low speed. However, this should not be done
when the machine is stopped, at full load or running at
maximum speed.
Two speed ranges can be preselected with the gear selector
11.
Gear I:
Low speed range; for working with large drill-
ing diameter or for driving in screws.
Gear II:
High speed range; for working with small drill-
ing diameter.
Always turn the gear selector 11 in the direction of the arrow.
If the gear selector 11 cannot be fully engaged, lightly rotate
the drive spindle with the drill bit by twisting the drill chuck.
Switching On and Off
To start the machine, press the On/Off switch 10 and keep it
pressed.
To lock the pressed On/Off switch 10, press the lock-on but-
ton 8.
To switch off the machine, release the On/Off switch 10 or
when it is locked with the lock-on button 8, briefly press the
On/Off switch 10 and then release it.
To save energy, only switch the power tool on when using it.
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 10
is pressed.
Light pressure on the On/Off switch 10 results in low speed/
impact rate. Further pressure on the switch increases the
speed/impact rate.
Preselecting the Speed/Impact Frequency
(PSB 850-2 RE/PSB 850-2 RA/PSB 900-2 RE/
PSB 8500-2 RE/PSB 9000-2 RE)
With the thumbwheel for speed preselection 16, the required
speed/impact frequency can be preselected even during op-
eration.
The required speed/impact frequency depends on the mate-
rial and the working conditions, and can be determined
through practical testing.
1 609 92A 0TW | (27.10.14)
Electronic Speed Preselection
(PSB 1000-2 RCE/PSB 1000-2 RCA)
With the thumbwheel for electronic speed preselection 5, the
required speed/impact frequency can be selected even if the
machine is running.
The required speed/impact frequency depends on the mate-
rial and the working conditions, and can be determined
through practical testing.
For working with low speed.
For working with maximum speed.

Working Advice

 Before any work on the machine itself, pull the mains
plug.
 Apply the power tool to the screw/nut only when it is
switched off. Rotating tool inserts can slip off.
After longer periods of working at low speed, allow the ma-
chine to cool down by running it for approx. 3 minutes at max-
imum speed with no load.

Maintenance and Service

Maintenance and Cleaning

 Before any work on the machine itself, pull the mains
plug.
 For safe and proper working, always keep the machine
and ventilation slots clean.
If the replacement of the supply cord is necessary, this has to
be done by Bosch or an authorized Bosch service agent in or-
der to avoid a safety hazard.

After-sales Service and Application Service

Our after-sales service responds to your questions concern-
ing maintenance and repair of your product as well as spare
parts. Exploded views and information on spare parts can al-
so be found under:
www.bosch-pt.com
Bosch's application service team will gladly answer questions
concerning our products and their accessories.
In all correspondence and spare parts order, please always in-
clude the 10-digit article number given on the type plate of
the machine.
Bosch Power Tools