Bosch Professional GBS 75 A Original Instructions Manual page 8

8 | English
Switching On and Off
Make sure that you are able to press the On/Off switch
u
without releasing the handle.
To switch on the power tool, press and hold the on/off
switch (4).
To lock the on/off switch (4) press and hold it while also
pushing the lock-on button (5).
To switch off the power tool, release the on/off switch (4).
If the on/off switch (4) is locked, press the switch first and
then release it.
Practical advice
Pull the plug out of the socket before carrying out any
u
work on the power tool.
The material removal rate when sanding and the surface
quality are primarily determined by the choice of sanding
belt and the preselected belt speed. The higher the belt
speed, the higher the removal rate and the finer the sanded
surface becomes.
Only sanding belts in perfect condition achieve good sanding
performance and make the power tool last longer.
Apply as little contact pressure as possible while working in
order to increase the service life of the sanding belts. The
weight of the power tool alone is enough to ensure good
sanding performance. Excessively increasing the contact
pressure will not lead to increased sanding performance,
rather it will cause more severe wear of the power tool and of
the sanding belt.
Place the running power tool on the surface you wish to work
on. Work with moderate feed and carry out sanding in paral-
lel and overlapping with the sanding path. Sand with the
grain; sanding marks that run against the grain result in both-
ersome sanding effects.
Especially when sanding off paint residue, the residue could
merge together, resulting in smears on the workpiece sur-
face and the sanding belt. Therefore, do not work without
dust extraction.
A sanding belt that has been used to work on metal should
no longer be used to work on other materials.
Use only original Bosch-sanding accessories.
Only ever store sanding belts hanging up and do not fold
them as this makes them unusable.
The sanding frame (accessory) enables an even, adjustable
material removal rate while sanding large wooden surfaces.
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.
Remove any adherent sanding dust using a brush.
In order to avoid safety hazards, if the power supply cord
needs to be replaced, this must be done by Bosch or by an
1 609 92A 4J8 | (07.11.2018)
after-sales service centre that is authorised to repair Bosch
power tools.
Cleaning the Dust Channel (see figure C)
Remove the protective cover (13) from time to time and
clean the dust channel (14) to maintain optimal suction
power.
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.
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: bsc.hz@cn.bosch.com
www.bosch-pt.com.cn
HK and Macau Special Administrative Regions
Robert Bosch 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
India
Bosch Service Center
69, Habibullah Road, (next to PSBB School), T. Nagar
Chennai–600077
Phone: (044) 64561816
Bosch Service Center Rishyamook
85A, Panchkuin Road
Bosch Power Tools