Bosch GWS Professional 20-180 Manual Original página 19

Angle grinder
Protection class
The specifications apply to a rated voltage [U] of 230 V. These specifications may vary at different voltages and in country-specific models.
When switching on power tools with starting current limitation, the voltage drops briefly. Interference with other equipment may occur in the
event of unfavourable conditions in the electricity supply. Malfunctions are not expected if the impedances in the electricity supply are below
0.25 ohms.
Noise/Vibration Information
Noise emission values determined according to
EN 60745-2-3.
Vibration total values a (triax vector sum) and uncertainty K determined according to EN 60745-2-3:
h
Surface grinding:
a
h
K
Disc sanding:
a
h
K
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.
Fitting
Fitting Protective Equipment
Pull the plug out of the socket before carrying out any
u
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.
Bosch Power Tools
GWS 20-180 H GWS 20-230 H GWS 21-180 H GWS 21-230 H
/ II / II
Typically the A-weighted noise level of the power tool are: 92
dB(A); sound power level 103 dB(A). Uncertainty K = 3 dB.
Wear hearing protection!
GWS 20-180 H
GWS 20-230 H
3 601 H49 L..
3 601 H50 L..
2
m/s
2
m/s
2
m/s
2
m/s
Protective guard for grinding
Place the protective guard (5) on the spindle collar. Adjust
the position of the protective guard (5) to the requirements
of the operation and lock the protective guard (5) with the
locking screw (6).
Adjust the protective guard (5) such that sparking in
u
the direction of the operator is prevented.
Protective guard for cutting
Always use the protective guard for cutting (13) when
u
cutting with bonded abrasives.
Provide sufficient dust extraction when cutting stone.
u
The protective guard for cutting (13) is fitted in the same
way as the protective guard for grinding (5).
Extraction guard for cutting with a guide block
The extraction guard for cutting with a guide block (21) is fit-
ted in the same way as the protective guard for grinding (5).
Side handle
Do not operate your power tool without the side
u
handle (3).
Screw the side handle (3) on the left or right of the machine
head depending on how your are working.
Low-vibration auxiliary handle
ably.
Do not make any alterations of any kind to the auxili-
u
ary handle.
English | 19
/ II / II
GWS 21-180 H
GWS 21-230 H
3 601 H51 L..
3 601 H52 L..
9.5 9.5
1.5 1.5
5.5 4.0
1.5 1.5
The low-vibration auxiliary
handle reduces vibration,
enabling the tool to be used
safely and more comfort-
1 609 92A 431 | (08.04.2021)