Bosch Professional GWS 30-180 B Original Instructions Manual page 21

Protective guard for cutting
Always use the protective guard for cutting (16) when
u
cutting with bonded abrasives.
Provide sufficient dust extraction when cutting stone.
u
The protective guard for cutting (16) is fitted in the same
way as the protective guard for grinding with locking
screw (7) or the protective guard for grinding with clamping
lever (6).
Extraction guard for cutting with a guide block
The extraction guard for cutting with a guide block (25) is fit-
ted in the same way as the protective guard for grinding (7).
Side handle
Do not operate your power tool without the side
u
handle (5).
Screw the side handle (5) on the left or right of the machine
head depending on how your are working.
Vibration Damping
The integrated vibration
damping function reduces
the generated vibration.
Do not continue to use the power tool if the damping
u
element is damaged.
Hand guard
Always fit the hand guard (19) when working with the
u
rubber sanding plate (20) or with the cup brush/disc
brush/flap disc.
Attach the hand guard (19) to the side handle (5).
Fitting the Abrasive Tools
Pull the plug out of the socket before carrying out any
u
work on the power tool.
Do not touch grinding and cutting discs until they have
u
cooled down. The discs can become very hot while work-
ing.
Note: Ensure that the clamping flange supplied (27) is
mounted correctly in accordance with figure C.
Make sure that the fitted O-ring (28) is not damaged and is
mounted correctly in accordance with figure C. Replace any
damaged O-rings (28).
Note: It is recommended to use the quick-clamping
nut (14). When using the clamping nut (13), expect more
force to be required to loosen it.
Clean the grinding spindle (18) and all parts to be mounted.
Lock the grinding spindle with the spindle lock button (1)
before clamping and releasing the abrasive tools.
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.
Quick-clamping nut
To change the abrasive tool easily without having to use any
additional tools, you can use the quick-clamping nut (14) in-
stead of the clamping nut (13).
Bosch Power Tools
The quick-clamping nut (14) may be used only for
u
grinding or cutting discs.
Only use quick-clamping nuts (14) that are in good work-
ing order and not damaged.
When screwing on, make sure that the printed side of the
quick-clamping nut (14) is not facing the grinding disc;
the arrow must be pointing towards the index mark (29).
(29)
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
direction-of-rotation arrow on the diamond cutting disc and
the direction of rotation of the machine (see direction-of-ro-
tation arrow on the machine head) agree.
See graphics page for the mounting sequence.
To fasten the grinding/cutting disc, screw on the clamping
nut (13) and tighten with the two-hole spanner.
After fitting the abrasive tool, check that the abrasive
u
tool is fitted correctly and can turn freely before
switching on the power tool. Make sure that the abras-
ive tool does not brush against the protective guard or
other parts.
Flap disc
Always fit the hand guard (19) when working with the
u
flap disc.
Rubber sanding pad
Always fit the hand guard (19) when working with the
u
rubber sanding pad (20).
English | 21
Press the spindle lock but-
ton (1) to lock the grinding
spindle. To tighten the
quick-clamping nut, turn
the grinding disc firmly
clockwise.
If the quick-clamping nut
has been attached correctly
and is not damaged, you
can loosen it by hand by
turning the knurled ring an-
ticlockwise. If the quick-
clamping nut is stuck, do
not attempt to loosen it
with pliers – always use
the two-pin spanner. Posi-
tion the two‑pin spanner as
shown in the figure.
1 609 92A 6EP | (10.05.2022)