Dust/Chip Extraction; Operation; Working Advice - Bosch GWS 22-180 Operating Instructions Manual

Lock the grinder spindle with the
spindle lock button 1. To
tighten the quickclamping nut, firmly
turn the grinding disc
in clockwise direction.
A properly attached, undamaged
quickclamping nut can be
loosened by hand when turning
the knurled ring in anticlockwise
direction. Never loosen a tight
quick-clamping nut with pliers.
Always use the two-pin spanner.
Insert the two-pin spanner as
shown in the illustration.
Approved grinding tools
All grinding tools mentioned in these operating instructions
can be used. The permissible speed [/min] or the
circumferential speed [m/s] of the grinding tools used
must at least match the values given in the table. Therefore,
observe the permissible rotational/circumferential speed
on the label of the grinding tool.

Dust/chip extraction

► Dusts 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 dusts
can cause allergic reactions and/or lead to respiratory
infections of the user orbystanders. Certain dusts, such
as oak or beech dust, are considered as carcinogenic,
especially in connection with wood-treatment additives
(chromate, wood preservative). Materials containing
asbestos may only be worked by specialists.
— Use dust extraction whenever possible.
— Provide for good ventilation of the working place.
— It is recommended to wear a P2 filterclass respirator.
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Manual GWS 22-180.indd 29
Observe the relevant regulations in your country for the
materials to be worked.

Operation

Starting operation
► Observe correct mains voltage! The voltage of the
power source must agree with the voltage specified
on the nameplate of the machine. Power tools
marked with 230 Vcan also be operated with 220 V.
► Hold power tool by insulated gripping surfaces 2 and
auxiliary handle 4 only. The accessory may contact
hidden wiring or its own cord. Accessory contacting
a "live" wire may make exposed metal parts of the
power tool "live" and shock the operator.
When operating the machine with power from mobile
generators that do not have sufficient reserve capacity or
are not equipped with suitable voltage control with starting
current amplification, loss of performance or untypical
behavior can occur upon switching on. Please observe the
suitability of the power generator being used, particularly
with regard to the mains voltage and frequency.
Switching On and Off
To start the power tool, sliding the lock button 4 to forward
and after press the On/Off switch 3. To lock the On/Off
switch 3, press the lock button 4 totally to forward until
locker and after release de On/Off switch 3.
To turn off the power tool, release the On/Off switch 3, or if
it is locked, press the On/Off switch 3 and release it.
Switch Version without Lock-on (country-specific)
To start the power tool, press the On/Off switch 3 forward
and then down. To switch off the machine, release the On/Off switch 3.
► Check grinding tools before using. The grinding
tool must be mounted properly and be able to move
freely. Carry out a test run for at least one minute
with no load. Do not use damaged, out-of-centre or
vibrating grinding tools. Damaged grinding tools can
burst and cause injuries.

Working advice

► Exercise caution when cutting slots in structural
walls; see Section "Information on Structures ".
► Clamp the workpiece if it does not remain stationary
due to its own weight.
► Do not strain the machine so heavily that it comes to
a standstill.
► After heavily straining the power tool, continue to
run it at no-load for several minutes to cool down the
cutting/grinding tool.
► Grinding and cutting discs become very hot while
working; do not touch until they have cooled.
► Do not use the power tool with a cut-off stand.
Rough grinding
► Never use a cutting disc for roughing.
The best roughing results are achieved when setting the
machine at an angle of 30° to 40°. Move the machine back
and forth with moderate pressure. In this manner, the
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29/11/11 08:34