Bosch GBM 23-2 Professional Manual de instrucciones original - Página 8
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8 | English
Products that are only sold in AUS and NZ: Use a resid-
u
ual current device (RCD) with a nominal residual current
of 30 mA or less.
Mechanical Gear Selection
Only operate the gear selector (7) when the power
u
tool is not in use.
You can preselect two speed ranges with the gear selector
(7).
Gear I:
Low speed range; for working with a
large drilling diameter
Gear II:
High speed range; for working with a
small drilling diameter.
If the gear selector switch (7) cannot be swivelled all the way
to the stop, turn the drive spindle slightly with the drill.
Switching On/Off
To start the power tool, press and hold the on/off switch
(6).
Slide the lock-on button (5) up-
wards to lock the pressed on/off
switch (6) in position.
To switch off the power tool, release the on/off switch (6);
or, if the switch is locked with the lock-on button (5), briefly
press the on/off switch (6) and then release it.
Adjusting the Speed (GBM 23-2 E)
You can adjust the speed of the power tool when it is on by
pressing in the on/off switch (6) to varying extents.
A light pressure on the on/off switch (6) results in a low rota-
tional speed. Increased pressure on the switch causes an in-
crease in speed.
Practical Advice
Use a drill emulsion or cutting oil for cooling and lubrication
in order to prevent the drill bit from overheating or jamming.
For drilling diameters > 10 mm, pre-drill with a small drilling
diameter. This allows you to reduce the contact pressure
and puts less strain on the power tool.
When drilling into metal, only use sharpened HSS drills (HSS
= high-speed steel) which are in perfect condition. The
Bosch accessory range guarantees appropriate quality.
The machine vice, which is available as an accessory, en-
ables the workpiece to be securely clamped. This prevents
the workpiece from turning and any accidents this could
cause.
1 609 92A 4H6 | (26.07.2018)
Maintenance and Servicing
Maintenance and Cleaning
Pull the plug out of the socket before carrying out any
u
work on the power tool.
To ensure safe and efficient operation, always keep
u
the power tool and the ventilation slots clean.
In order to avoid safety hazards, if the power supply cord
needs to be replaced, this must be done by Bosch or by a
customer service centre that is authorised to repair Bosch
power tools.
If the power tool should fail despite the care taken in manu-
facturing and testing procedures, the repair should be car-
ried out by an after-sales service centre for Bosch power
tools.
In all correspondence and spare parts orders, please always
include the 10‑digit article number given on the type plate of
the power tool.
After-sales Service and Advice on Using
Products
Our after-sales service can answer questions concerning
product maintenance and repair, as well as spare parts. You
can find exploded drawings and information on spare parts
at: www.bosch-pt.com
The Bosch product use advice team will be happy to help you
with any questions about our products and their accessor-
ies.
www.powertool-portal.de, the internet portal for trades-
people and DIY enthusiasts.
In all correspondence and spare parts orders, please always
include the 10‑digit article number given on the type plate of
the product.
Cambodia
Robert Bosch (Cambodia) Co., Ltd
Unit 8BC, GT Tower, 08th Floor, Street 169,
Czechoslovakia Blvd, Sangkat Veal Vong
Khan 7 Makara, Phnom Penh
VAT TIN: 100 169 511
Tel.: +855 23 900 685
Tel.: +855 23 900 660
www.bosch.com.kh
People's Republic of China
China Mainland
Bosch Power Tool (China) Co. Ltd.
Bosch Service Center
567, Bin Kang Road
Bin Kang District
Hangzhou, Zhejiang Province
China 310052
Tel.: (0571) 8887 5566 / 5588
Fax: (0571) 8887 6688 x 5566# / 5588#
E-mail: [email protected]
www.bosch-pt.com.cn
HK and Macau Special Administrative Regions
Bosch Power Tools