Operation Manual

English | 31
Bosch Power Tools 1 609 929 R46 | (15.7.09)
Dust/Chip Extraction
f Dusts from materials such as lead-containing
coatings, some wood types, minerals and
metal can be harmful to one’s health. Touch-
ing or breathing-in the dusts can cause aller-
gic reactions and/or lead to respiratory infec-
tions of the user or bystanders.
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 work-
ing place.
– It is recommended to wear a P2 filter-
class respirator.
Observe the relevant regulations in your
country for the materials to be worked.
Operation
Starting Operation
f 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 V
can also be operated with 220 V.
When operating the machine with power from
mobile generators that do not have sufficient re-
serve capacity or are not equipped with suitable
voltage control with starting current amplifica-
tion, loss of performance or untypical behavior
can occur upon switching on.
Please observe the suitability of the power gen-
erator being used, particularly with regard to
the mains voltage and frequency.
Switching On and Off
To start the power tool, press the On/Off switch
2 forward and then down.
To lock-on the pressed On/Off switch 2, push
the On/Off switch 2 further forward.
To switch off the power tool, release the On/Off
switch 2, or when it is locked, briefly press the
On/Off switch 2 and then release it.
Switch Version without Lock-on
(country-specific):
To start the power tool, press the On/Off switch
2 forward and then down.
To switch off the machine, release the On/Off
switch 2.
f 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.
Restarting Protection
(GWS 22-180 JH/GWS 22-230 JH/
GWS 24-180 JH/GWS 24-230 JH/
GWS 26-180 JH/GWS 26-230 JH)
The restarting protection feature prevents un-
controlled restarting of the machine after an in-
terruption in the power supply.
To restart the operation, switch the On/Off
switch 2 to the Off position and start the ma-
chine again.
Reduced starting current
(GWS 22-180 JH/GWS 22-230 JH/
GWS 24-180 JH/GWS 24-230 JH/
GWS 26-180 JH/GWS 26-230 JH)
The electronic reduced starting current limits
the power consumption when switching the tool
on and enables operation from a 13 ampere
fuse.
Note: When the machine runs at full speed im-
mediately after switching on, the reduced start-
ing current and the restarting protection have
failed. The power tool should be sent immedi-
ately to an after-sales service (for addresses,
see section “After-sales Service and Customer
Assistance”.
OBJ_BUCH-777-004.book Page 31 Wednesday, July 15, 2009 2:55 PM