Bosch GBH 2-22 Professional Original Instructions Manual page 10

OBJ_BUCH-795-004.book Page 10 Friday, August 23, 2013 12:16 PM
10 | English
Setting the operating mode
(only for GBH 2-22 S | E | RE)
Note: For the rotary hammer GBH 2-22, only the operating
mode hammer drilling is possible; thus, no adjustment is nec-
essary.
With the selector switch for drilling/hammer drilling 9, the
operating mode of the machine is selected.
Note: Change the operating mode only when the machine is
switched off! Otherwise, the machine can be damaged.
– To change the operating mode, press the release button 8
and turn the drilling/hammer drilling selector switch 9 to
the desired position until it can be heard to latch.
Position for hammer drilling in concrete or
stone as well as for chiselling (chiselling only
with the MV 200 accessory)
Position for drilling without impact in wood,
metal, ceramic and plastic as well as for screw-
driving and thread cutting
Reversing the rotational direction (GBH 2-22 RE)
The rotational direction switch 4 is used to reverse the rota-
tional direction of the machine. However, this is not possible
with the On/Off switch 7 actuated.
Right rotation: Turn the selector switch for drilling/ham-
mer drilling 4 on both sides to the stop in the position
Left rotation: Turn the selector switch for drilling/hammer
drilling 4 on both sides to the stop in the position
Set the direction of rotation for hammer drilling, drilling and
chiselling always to right rotation.
Switching On and Off
– To start the machine, press the On/Off switch 7.
– To lock the On/Off switch, keep it pressed and additionally
push the lock-on button 6.
– To switch off the machine, release the On/Off switch 7.
When the On/Off switch 7 is locked, press it first and then
release it.
Setting the Speed/Impact Rate (GBH 2-22 E | RE)
The speed/impact rate of the switched on power tool can be
variably adjusted, depending on how far the On/Off switch 7
is pressed.
Light pressure on the On/Off switch 7 results in low speed/im-
pact rate. Further pressure on the switch increases the
speed/impact rate.
Safety Clutch
 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.
 If the power tool jams, switch the machine off and loos-
en the tool insert. When switching the machine on with
the drilling tool jammed, high reaction torques can
occur.
1 619 P11 523 | (23.8.13)
Working Advice
 Before any work on the machine itself, pull the mains
plug.
Chiselling
For chiselling, a MV 200 SDS-plus chiselling attachment (ac-
cessory), which is inserted into the SDS-plus tool holder 1, is
required.
Inserting Screwdriver Bits (see figure H)
 Apply the power tool to the screw/nut only when it is
switched off. Rotating tool inserts can slip off.
To work with screwdriver bits, a universal bit holder 23 with
SDS-plus shank (accessory) is required.
– Clean the shank end of the adapter shank and apply a light
coat of grease.
– Insert the universal bit holder with a turning motion into
the tool holder until it automatically locks.
– Check the locking effect by pulling the universal bit holder.
– Insert a screwdriver bit into the universal bit holder. Use
only screwdriver bits that match the screw head.
– To remove the universal bit holder, pull the locking
sleeve 3 toward the rear and remove the universal bit hold-
er 23 out of the tool holder.
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.
 A damaged dust protection cap should be changed im-
mediately. We recommend having this carried out by
an after-sales service.
Clean the tool holder 1 each time after using.
If the machine should fail despite the care taken in manufac-
turing and testing procedures, repair should be carried out by
an after-sales service centre for Bosch power tools.
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.
In all correspondence and spare parts order, please always in-
clude the 10-digit article number given on the type plate of
the machine.
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.
Bosch Power Tools