Starting Operation; Working Advice - BTI WKS 125-2 Originalbetriebsanleitung

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 V can
also be operated with 220 V.
Hold power tool by insulated gripping sur-
faces 22 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 volt-
age and frequency.
Switching On and Off
To start the power tool, push the On/Off switch 2 for-
wards.
To lock the On/Off switch 2, press the On/Off switch
2 down at the front until it latches.
To switch off the power tool, release the On/Off
switch 2 or, if it is locked, briefly push down the back
of the On/Off switch 2 and then release it.
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 struc-
tural 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, con-
tinue to run it at no-load for several minutes
to cool down the accessory.
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.
1 619 P09 173 • 15.9.10
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 workpiece will not become too hot,
does not discolour and no grooves are formed.
Flap Disc
With the flap disc (accessory), curved surfaces and
profiles can be worked.
Flap discs have a considerably higher service life,
lower noise levels and lower sanding temperatures
than conventional sanding sheets.
Cutting Metal
For cutting with bonded abrasives, always
use the protection guard for cutting 13.
When cutting, work with moderate feed, adapted to
the material being cut. Do not exert pressure onto the
cutting disc, tilt or oscillate the machine.
Do not reduce the speed of running down cutting
discs by applying sideward pressure.
When cutting profiles and square bar, it is best to start
at the smallest cross section.
Cutting Stone
Provide for sufficient dust extraction when
cutting stone.
Wear a dust respirator.
The machine may be used only for dry cut-
ting/grinding.
For cutting stone, it is best to use a diamond cutting
disc.
When using the cutting guide with dust extraction
protection guard 20, the vacuum cleaner must be
approved for vacuuming masonry dust. Suitable vac-
uum cleaners are available from BTI.
The machine must
always work in an up-
grinding motion. Oth-
erwise, the danger
exists of it being
pushed uncon-
trolled out of the cut.
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