Bosch PWS 20-230 Instructions D'emploi page 17

1 609 929 R44 - Buch Seite 7 Dienstag, 11. März 2008 2:06 14
Cutting Stone
The machine must be used only for dry
cutting/grinding.
Operate the machine with dust extraction only. In
addition, wear a dust mask.
Slide the machine with moderate feed, adapted
to the material to be worked (Figure).
For cutting especially hard material, e. g., con-
crete with high pebble content, the diamond cut-
ting disc can overheat and become damaged as
a result. This is clearly indicated by circular
sparking, rotating with the diamond cutting disc.
In this case, interrupt the cutting process and al-
low the diamond cutting disc to cool by running
freely at no-load speed for a short time.
Noticeable decreasing work progress and circu-
lar sparking are indications of a diamond cutting
disc that has become dull. Briefly cutting into
abrasive material (e. g., lime-sand brick) can re-
sharpen the disc.
17 • 1 609 929 R44 • 05.01
It is best to use a dia-
mond cutting disc. As
a safety measure
against jamming, use
the cutting guide 24
with the special dust
extraction protection
guard.
The vacuum cleaner
must be approved for
the extraction of ma-
with the cutting guide 24/cutting grinder stand 26
sonry dust.
(accessory) or for left-handed persons.
Bosch provides suit-
Unscrew completely the four screws.
able vacuum clean-
Rotate the machine head carefully and without
ers.
removing from the housing to the new position.
Switch on the ma-
Screw in the screws again and tighten.
chine and place the
front part of the cut-
ting guide on the
workpiece.
If the machine should fail despite the care taken
in manufacturing and testing procedures, repair
should be carried out by an after-sales service
centre for Bosch power tools.
In all correspondence and spare parts orders,
please always include the 10-digit order number
given on the nameplate of the machine.
English - 7
Rotating the Machine Head
Before any work on the machine itself, pull
the mains plug.
Maintenance and Cleaning
Before any work on the machine itself, pull
the mains plug.
For safe and proper working, always keep
the machine and the ventilation slots clean.
In extreme working conditions, conductive
dust can accumulate in the interior of the
machine when working with metal. The
protective insulation of the machine can be
degraded. The use of a stationary extrac-
tion system is recommended in such cases
as well as frequently blowing out the venti-
lation slots and installing a residual current
device (RCD).
The machine head
can be rotated with
respect to the ma-
chine housing in 90°
steps. In this man-
ner, the On/Off
switch can be
brought to an advan-
tageous handling
position for special
working situations,
e. g., for cutting work