Dust/Chip Extraction - Bosch GWS 12V-76 Professional Manual Original

OBJ_BUCH-2937-001.book Page 17 Thursday, July 21, 2016 1:30 PM
 Do not continue to press the On/Off switch after the
machine has been automatically switched off. The bat-
tery can be damaged.
Observe the notes for disposal.
Removing the battery (see figure A)
To remove the battery 4 press the unlocking buttons 5 and
pull out the battery downwards. Do not exert any force.
Battery Charge-control Indication
LED
Continuous lighting 3 x green
Continuous lighting 2 x green
Continuous lighting 1 x green
Flashing light 1 x green
Mounting the Protective Devices
 Before any work on the machine itself (e. g. mainte-
nance, tool change, etc.) as well as during transport
and storage, remove the battery from the power tool.
There is danger of injury when unintentionally actuating
the On/Off switch.
Note: After breakage of the grinding disc during operation or
damage to the holding fixtures on the protection guard/power
tool, the machine must promptly be sent to an after-sales ser-
vice agent for maintenance. For addresses, see section "Af-
ter-sales Service and Application Service".
Protection Guard for Cutting
 For cutting with bonded abrasives, always use the pro-
tection guard for cutting 10.
 Provide for sufficient dust extraction when cutting
stone.
Mounting the blade guard (see figure B)
The protection guard for cutting 10 is mounted onto the pro-
tection guard for grinding 7 until it engages.
Adjusting the Protection Guard
Turn the protection guard to the desired position until it en-
gages. No tool is required for this.
Mounting the Grinding Tools (see figure B)
 Before any work on the machine itself (e. g. mainte-
nance, tool change, etc.) as well as during transport
and storage, remove the battery from the power tool.
There is danger of injury when unintentionally actuating
the On/Off switch.
 Do not touch grinding and cutting discs before they
have cooled down. The discs can become very hot while
working.
Clean the grinder spindle 8 and all parts to be mounted.
For tightening or loosening the grinding tools, push the spin-
dle lock button 2 forwards and simultaneously turn the grind-
ing tool to fix the grinder spindle.
 Actuate the spindle lock button only when the grinder
spindle is at a standstill. Otherwise, the machine may be-
come damaged.
Bosch Power Tools
Grinding/Cutting Disc
Pay attention to the dimensions of the grinding tools. The
mounting hole diameter must fit the mounting flange without
play. Do not use reducers or adapters.
When using diamond cutting discs, pay attention that the di-
rection-of-rotation arrow on the diamond cutting disc and the
direction of rotation of the machine (see direction-of-rotation
arrow on the housing) agree.
See graphics page for the mounting sequence.
Capacity
Attach the grinding tool using the bolt 11. Tighten the bolt us-
≥2/3 ing the hex key 13 until the washer of the bolt is flush with the
grinding tool.
≥1/3
 After mounting the grinding tool and before switching
<1/3
on, check that the grinding tool is correctly mounted
Reserve
and that it can turn freely. Make sure that the grinding
tool does not graze against the protection guard or oth-
er parts.
Approved Grinding Tools
All grinding tools mentioned in these operating instructions
can be used.
The permissible speed [min
[m/s] of the grinding tools used must at least match the values
given in the table.
Therefore, observe the permissible rotational/circumferen-
tial speed on the label of the grinding tool.
Selecting Grinding Discs
Grinding discs

Dust/Chip Extraction

 Dust from materials such as lead-containing coatings,
some wood types, minerals and metal can be harmful to
one's health. Touching or breathing-in the dust can cause
allergic reactions and/or lead to respiratory infections of
the user or bystanders.
Certain dust, such as oak or beech dust, is considered car-
cinogenic, especially in connection with wood-treatment
additives (chromate, wood preservative). Materials con-
taining asbestos may only be worked by specialists.
English | 17
-1
] or the circumferential speed
max.
[mm] [mm]
-1
D b d [min ]
76 7 10 19500
Material
Carbide Multi Wheel PVC, wood,
composites,
acrylic glass
Expert for Inox Aluminium,
copper
Best for Ceramic Tile, concrete,
brick
1 609 92A 29F | (21.7.16)
[m/s]
80