Changing The Tool; Starting Operation; Switching On/Off - Bosch GRW 12 E Professional Originalbetriebsanleitung

12 | English
The vibration level and noise emission value given in these
instructions have been measured in accordance with a
standardised measuring procedure and may be used to com-
pare power tools. They may also be used for a preliminary
estimation of vibration and noise emissions.
The stated vibration level and noise emission value repres-
ent the main applications of the power tool. However, if the
power tool is used for other applications, with different ap-
plication tools or is poorly maintained, the vibration level
and noise emission value may differ. This may significantly
increase the vibration and noise emissions over the total
working period.
To estimate vibration and noise emissions accurately, the
times when the tool is switched off or when it is running but
not actually being used should also be taken into account.
This may significantly reduce vibration and noise emissions
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 their hands warm,
and organising workflows correctly.
Assembly
Pull the plug out of the socket before carrying out any
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work on the power tool.

Changing the Tool

Stirrer paddle with M14 male thread
(5)
Screw the stirrer paddle (5) into the drive spindle (4). To do
this, hold the drive spindle (4) using an open-ended spanner
(GRW12 E: Width across flats 22 mm, GRW18-2 E: Width
across flats 24 mm) and use a second open-ended spanner
(width across flats 22 mm or 24 mm) to tighten the stirrer
paddle (5).
The stirrer paddle is disassembled in reverse order.
Operation

Starting Operation

Products that are only sold in AUS and NZ: Use a resid-
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ual current device (RCD) with a nominal residual current
of 30 mA or less.
1 609 92A 7YB | (31.05.2022)
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Dusts, e. g. mineral dusts, can be harmful to health. Touch-
ing or breathing in this dust can trigger allergic reactions
and/or cause respiratory illnesses in the user or in people in
the near vicinity.
Materials containing asbestos may only be machined by spe-
cialists.
– Provide good ventilation at the workplace.
– It is advisable to wear a P2 filter class breathing mask.
The regulations on the material being machined that apply in
the country of use must be observed.
Mechanical gear selection (GRW 18-2 E)
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Press in the gear selector switch (1) and slide it until it locks.
You can preselect two speed ranges with the gear selector
switch (1).
(4)
If the gear selector switch (1) cannot be slid all the way
when the power tool is not in use, turn the drive spindle
slightly with the stirrer paddle.

Switching on/off

To start the power tool, first press the lock-off button (2),
then press the on/off switch (3) and keep it pressed.
Note: For safety reasons, the on/off switch (3) cannot be
locked; it must remain pressed during the entire operation.
To switch off the power tool, release the on/off switch (3).
Adjusting the Speed
You can adjust the speed of the power tool when it is on by
pressing in the on/off switch (3) to varying extents.
Slight pressure on the on/off switch (3) results in a low rota-
tional speed. Increased pressure on the switch causes an in-
crease in speed.
Pay attention to the mains voltage. The voltage of the
power source must match the voltage specified on the
rating plate of the power tool. Power tools marked
with 230 V can also be operated with 220 V.
Operate the gear selector switch only when the power
tool is not in use.
First gear:
Low speed range; when working with stirrer
paddles with diameters up to 180 mm.
Second gear:
High speed range; when working with stirrer
paddles with diameters up to 140 mm.
Bosch Power Tools