Bosch Power Tools - Bosch GBR 14 CA Professional Original Instructions Manual

Overload Protection
When overloaded, the motor comes to a stop.
Relieve the load on the machine immediately
and allow to cool down for approx. 30 seconds
at the highest no-load speed.
Working Advice
Clamp the workpiece if it does not remain
stationary due to its own weight.
Do not strain the machine so heavily that it
comes to a standstill.
Do not touch diamond cup wheels before
they have cooled. Diamand cup wheels be-
come very hot while working.
Apply the power tool to the workpiece only
when switched on.
Move the machine with a circular motion or
alternately in length and crosswise direction
over the workpiece/surface applying moderate
pressure. For removal of coatings, the machine
can also be guided at a small angle to the work-
piece surface without a reduction of the dust
extraction capacity.
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 working conditions, conductive
dust can accumulate in the interior of the
machine when working with metal. The pro-
tective insulation of the machine can be de-
graded. The use of a stationary extraction
system is recommended in such cases as
well as frequently blowing out the ventila-
tion slots and installing a residual current
device (RCD).
A blunt diamond cup wheel 11 can be reground
by briefly grinding abrasive material (e.g. lime-
sand brick).

Bosch Power Tools

Changing the Brush Collar
To ensure optimal dust extraction, change a
worn brush collar 8 in good time.
Using a screwdriver, carefully pry out the brush
collar 8 at the openings of the brush guide with
the diamond cup wheel 11 mounted. Use the dia-
mond cup wheel for leverage while prying out.
Carefully push a new brush collar 8 to the stop
into the brush guide. When inserting the new
brush collar, pay attention that the ends of the
brush collar are not positioned in one of the
openings of the brush guide.
Service Indicator 5
When the carbon brushes are worn out, the ma-
chine switches itself off. This is indicated ap-
prox. 8 hours beforehand by the lighting or
blinking of the service indicator 5. The machine
must then be sent to an after-sales service
agent. Addresses are listed in the Section
"After-sales Service and Customer Assistance".
WARNING! Important instructions for con-
necting a new 3-pin plug to the 2-wire cable.
The wires in the cable are coloured according to
the following code:
Do not connect the blue or brown wire to the
earth terminal of the plug.
Important: If for any reason the moulded plug is
removed from the cable of this power tool, it
must be disposed of safely.
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.
English | 23
3 609 929 B58 | (17.1.08)