Starting Operation; Maintenance And Service; Maintenance And Cleaning; After-Sales Service And Customer Assistance - Bosch GGS 27 Professional Manual Original

OBJ_BUCH-272-002.book Page 19 Monday, August 9, 2010 5:05 PM
Operation

Starting Operation

Observe correct mains voltage! The voltage
of the power source must agree with the
voltage specified on the nameplate of the
machine. Power tools marked with 230 V
can also be operated with 220 V.
Switching On and Off
To start the power tool, push the On/Off switch
5 forwards.
To lock the On/Off switch 5, press the On/Off
switch 5 down at the front until it latches.
To switch off the power tool, release the On/Off
switch 5 or, if it is locked, briefly push down the
back of the On/Off switch 5 and then release it.
Check grinding tools before using. The
grinding tool must be mounted properly
and be able to move freely. Carry out a test
run for at least one minute with no load. Do
not use damaged, out-of-centre or vibrating
grinding tools. Damaged grinding tools can
burst and cause injuries.
Constant Electronic Control (GGS 27 C)
Constant electronic control holds the speed
constant at no-load and under load, and ensures
uniform working performance.
Speed preselection (GGS 27 C)
The required speed can be preselected with the
thumbwheel 6 (also while running).
The required speed depends on the material to
be worked and the diameter of the tool. Deter-
mine the optimum setting through practical
testing.
Thumbwheel Position No-load speed (min
1 12000
2 16000
3 21000
4 24000
5 26000
6 27000
Bosch Power Tools
Working Advice
Optimum grinding results are achieved when
the grinding tool is moved uniformly back and
forth with light pressure. Pressure that is too
strong reduces the performance capability of
the machine and causes the grinding tool to
wear more quickly.

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.
In extreme conditions, always use dust ex-
traction as far as possible. Blow out ventila-
tion slots frequently and install a residual
current device (RCD). When working metals,
conductive dust can settle in the interior of
the power tool. The total insulation of the
power tool can be impaired.
If the machine should fail despite the care taken
in manufacturing and testing procedures, repair
should be carried out by an after-sales service
centre for Bosch power tools.
In all correspondence and spare parts order,
please always include the 10-digit article
number given on the type plate of the machine.
After-sales Service and Customer
Assistance
Our after-sales service responds to your ques-
tions concerning maintenance and repair of your
product as well as spare parts. Exploded views
-1
)
and information on spare parts can also be
found under:
www.bosch-pt.com
Our customer service representatives can an-
swer your questions concerning possible appli-
cations and adjustment of products and acces-
sories.
English | 19
1 609 929 X18 | (9.8.10)