Bosch Professional GWS 27-180 PR Manual Original página 21

Disc sanding:
2 2
a = 4.5 m/s , K = 1.5 m/s .
h
The vibration level given in these instructions has been
measured in accordance with a standardised measuring pro-
cedure and may be used to compare power tools. It can also
be used for a preliminary estimation of exposure to vibra-
tion.
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.
Soft start
The electronic soft start limits the torque when the power
tool is switched on and enables a smooth start-up.
Note: If the power tool runs at full speed immediately after
being switched on, this means that the soft start and restart
protection mechanisms have failed. The power tool must be
sent to the after-sales service immediately; see the "After-
Sales Service and Application Service" section for ad-
dresses.
Restart protection
The restart protection feature prevents the power tool from
uncontrolled starting after the power supply to it has been
interrupted.
To restart the tool, set the on/off switch (3) to the off posi-
tion and then switch the power tool on again.
Kickback control
If there is a sudden kickback in the power tool,
e.g. jamming in a separating cut, the power
supply to the motor will be interrupted elec-
tronically.
To restart the tool, set the On/Off switch (3) to
the "off" position and then switch the power tool on again.
Turning the main handle
Pull the plug out of the socket before carrying out any
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work on the power tool.
The On/Off switch (3) must be in the Off position.
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Bosch Power Tools
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The main handle (32) can be rotated 90° to the left or right
relative to the motor housing. This enables the on/off switch
to be brought into a more convenient position for particular
working situations, such as cutting operations using the ex-
traction guard for cutting with a guide block (21) or for left-
handed persons.
Press the handle release (33) to unlock the main
handle (32) while simultaneously turning the main
handle (32) until it clicks into the required position.
Fitting
Fitting Protective Equipment
Pull the plug out of the socket before carrying out any
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work on the power tool.
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
Open the clamping lever (8). Place the protective guard (6)
with the coding cam (7) engaging into the coding groove on
the spindle collar until the shoulder of the protective guard is
seated against the flange of the power tool, and turn the pro-
tective guard (6) to the required position. Close the clamp-
ing lever (8).
Adjust the protective guard (6) such that sparking in
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the direction of the operator is prevented.
The tensioning force of the clamp from the protective
guard (6) can be changed by loosening or tightening the ad-
justment screw (9). Ensure that protective guard (6) is fitted
securely and check it regularly.
Note: The coding cams on the protective guard (6) ensure
that only a protective guard that is suitable for the power
tool can be fitted.
Protective guard for cutting
When cutting, always use the protective guard for
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cutting (16).
Provide sufficient dust extraction when cutting stone.
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English | 21
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(3)
(33)
1 609 92A 91W | (13.11.2023)