Working Advice; Maintenance And Service; Maintenance And Cleaning; After-Sales Service And Application Service - Bosch GSB 550 Professional Manual Original

OBJ_BUCH-2523-002.book Page 8 Friday, August 19, 2016 10:55 AM
8 | English
Impact Drilling
Set the selector switch 2 to the "Impact drilling"
symbol.
The selector switch 2 engages noticeably and can also be ac-
tuated with the machine running.
Switching On and Off
– To start the machine, press the On/Off switch 4 and keep
it pressed.
– To lock the pressed On/Off switch 4, press the lock-on
button 3.
– To switch off the machine, release the On/Off switch 4 or
when it is locked with the lock-on button 3, briefly press
the On/Off switch 4 and then release it.
To save energy, only switch the power tool on when using it.
Adjusting the Speed/Impact Rate
The speed/impact rate of the switched on power tool can be
variably adjusted, depending on how far the On/Off switch 4
is pressed.
Light pressure on the On/Off switch 4 results in low speed/im-
pact rate. Further pressure on the switch increases the
speed/impact rate.

Working Advice

 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.
For drilling in tiles, set the selector switch 2 to the "Drilling"
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, ma-
sonry and brick wall.
For drilling in metal, use only perfectly sharpened HSS drill
bits (HSS=high-speed steel). The appropriate quality is guar-
anteed by the Bosch accessories program.
Twist drills from 2.5–10 mm can easily be sharpened with
the drill bit sharpener (see accessories).

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
1 609 92A 3C5 | (19.8.16)
Bosch's application service team will gladly answer questions
concerning our products and their accessories.
In all correspondence and spare parts orders, please always
include the 10-digit article number given on the nameplate of
the product.
People's Republic of China
China Mainland
Bosch Power Tools (China) Co., Ltd.
567, Bin Kang Road
Bin Jiang District 310052
Hangzhou, P.R.China
Service Hotline: 4008268484
Fax: (0571) 87774502
E-Mail: contact.ptcn@cn.bosch.com
www.bosch-pt.com.cn
HK and Macau Special Administrative Regions
Robert Bosch Hong Kong Co. Ltd.
21st Floor, 625 King's Road
North Point, Hong Kong
Customer Service Hotline: +852 2101 0235
Fax: +852 2590 9762
E-Mail: info@hk.bosch.com
www.bosch-pt.com.hk
Indonesia
PT Robert Bosch
th
Palma Tower 10 Floor
Jl. RA Kartini II-S Kaveling 6 Sek II
Pondok Pinang, Kebayoran Lama
Jakarta Selatan 12310
Indonesia
Tel.: (021) 3005 5800
Fax: (021) 3005 5801
E-Mail: boschpowertools@id.bosch.com
www.bosch-pt.co.id
Philippines
Robert Bosch, Inc.
28th Floor Fort Legend Towers,
3rd Avenue corner 31st Street,
Fort Bonifacio Global City,
1634 Taguig City, Philippines
Tel.: (02) 8703871
Fax: (02) 8703870
matheus.contiero@ph.bosch.com
www.bosch-pt.com.ph
Bosch Service Center:
9725-27 Kamagong Street
San Antonio Village
Makati City, Philippines
Tel.: (02) 8999091
Fax: (02) 8976432
E-Mail: rosalie.dagdagan@ph.bosch.com
Bosch Power Tools