Battery Charging; Battery Charge Indicator; Fitting Protective Equipment - Bosch GWS 12V-76 Professional Manual Original

18 | English
The stated vibration level applies to the main applications of
the power tool. However, if the power tool is used for differ-
ent applications, with different application tools or poorly
maintained, the vibration level may differ. This can signific-
antly increase the exposure to vibration over the total work-
ing period.
To estimate the exposure to vibration accurately, the times
when the tool is switched off or when it is running but not ac-
tually being used should also be taken into account. This can
significantly reduce the exposure to vibration over the total
working period.
Implement additional safety measures to protect the oper-
ator from the effects of vibration, such as servicing the
power tool and application tools, keeping the hands warm,
and organising workflows correctly.
Fitting

Battery Charging

Use only the chargers listed in the technical data. Only
u
these chargers are matched to the lithium-ion battery of
your power tool.
Note: The battery is supplied partially charged. To ensure
full battery capacity, fully charge the battery in the charger
before using your power tool for the first time.
The lithium-ion battery can be charged at any time without
reducing its service life. Interrupting the charging process
does not damage the battery.
The lithium-ion battery is protected against deep discharge
by the "Electronic Cell Protection (ECP)". When the battery
is discharged, the power tool is switched off by means of a
protective circuit: The application tool no longer rotates.
Do not continue to press the On/Off switch after the
u
power tool has automatically switched off. The battery
can be damaged.
Follow the instructions on correct disposal.
Removing the Battery (see figure A)
To remove the battery (4), press the release buttons (5) and
pull the battery out of the power tool. Do not use force to
do this.

Battery charge indicator

LED
Continuous lighting 3 x green
Continuous lighting 2 x green
Continuous lighting 1 x green
Slowly flashing light 1 x green

Fitting Protective Equipment

Remove the battery from the power tool before carry-
u
ing out work on the power tool (e.g. maintenance,
changing tool, etc.). The battery should also be re-
moved for transport and storage. There is risk of injury
from unintentionally pressing the on/off switch.
1 609 92A 5WJ | (19.08.2020)
Note: If the grinding disc breaks during operation or the
holding fixtures on the protective guard/power tool become
damaged, the power tool must be sent to the after-sales ser-
vice immediately; see the "After-Sales Service and Applica-
tion Service" section for addresses.
Protective guard for grinding
Always use the protective guard for grinding (7)
u
when grinding.
Protective guard for cutting
Always use the protective guard for cutting (10) when
u
cutting bonded abrasives.
Provide sufficient dust extraction when cutting stone.
u
Fitting the Protective Guard (see figure B)
Insert the protective guard for cutting (10) onto the protect-
ive guard for grinding (7) until this engages firmly.
Adjusting the Protective Guard (see figure B)
Turn the protective guard to the required position and en-
sure the protective guard is engaged. No tool is required for
this.
Fitting the abrasive tools
Remove the battery from the power tool before carry-
u
ing out work on the power tool (e.g. maintenance,
changing tool, etc.). The battery should also be re-
moved for transport and storage. There is risk of injury
from unintentionally pressing the on/off switch.
Do not touch grinding and cutting discs until they have
u
cooled down. The discs can become very hot while work-
ing.
Clean the grinding spindle (8) and all parts to be mounted.
To tighten or loosen the abrasive tools, push the spindle lock
button (2) forwards and simultaneously turn the grinding
tool to fix the grinding spindle in place.
Do not press the spindle lock button while the grind-
u
ing spindle is moving. The power tool may become dam-
aged if you do this.
Grinding/cutting disc
Pay attention to the dimensions of the abrasive tools. The
diameter of the hole must match that of the mounting flange.
Do not use an adapter or reducer.
When using diamond cutting discs, make sure that the direc-
Capacity
tion of rotation arrow on the diamond cutting disc corres-
ponds to the direction of rotation of the machine (see direc-
60–100%
tion of rotation arrow on the housing).
30–60%
See the graphics page for fitting instructions.
10–30%
To remove the grinding/cutting disc, push the spindle lock
0–10%
button (2) forwards while simultaneously turning on the
grinding/cutting disc (12) in order to fix the grinding
spindle (8) in place (see figure C1).
Use a hex key (13) to remove the clamping bolt with
washer (11) and take off the grinding/cutting disc (12)
(see figure C2).
Bosch Power Tools