English |
47
1 609 929 L12 • 19.3.07
Speed preselection (BTI-WKS 125 VRE)
The required speed can be preselected with the thumbwheel
3
(also while running).
The data in the following table are recommended values.
Operating Instructions
f
Exercise caution when cutting slots in struc-
tural walls; see Section “
Information on
Structures
”.
f
Clamp the workpiece if it does not remain sta-
tionary due to its own weight.
f
Do not strain the machine so heavily that it
comes to a standstill.
f
Grinding and cutting discs become very hot
while working; do not touch until they have
cooled.
Rough Grinding
f
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 con-
ventional sanding sheets.
Cutting Metal
f
For cutting metal, always work with the pro-
tection guard for cutting 13.
When cutting, work with moderate feed, adapted to the
material being cut. Do not exert pressure onto the cut-
ting disc, tilt or oscillate the machine.
Do not reduce the speed of running down cutting discs
by applying sideward pressure.
The machine must
always work in an up-
grinding motion. Other-
wise, the danger exists
of it being pushed
uncontrolled
out of
the cut.
When cutting profiles
and square bar, it is
best to start at the
smallest cross section.
Cutting Stone
f
For cutting stone, always work with the cut-
ting guide with dust extraction protection
guard 20.
f
The machine may be used only for dry cut-
ting/grinding.
For cutting stone, it is best to use a diamond cutting
disc. As a safety measure against jamming, the cutting
guide with dust extraction protection guard
20
must be
used.
Operate the machine only with dust extraction and
additionally wear a dust protection mask.
The vacuum cleaner must be approved for the extrac-
tion of masonry dust. BTI provides suitable vacuum
cleaners.
Switch on the machine
and place the front part
of the cutting guide on
the workpiece. Slide
the machine with mod-
erate feed, adapted to
the material to be
worked.
Material
Application
Accessory
Thumbwheel 3
Metal
Removing paint
Sanding disc
2 – 3
Wood, metall
Brushing, rust removal
Cup brush, sanding disc
3
Metal, masonry
Sanding
Sanding disc
4 – 6
Metal
Rough grinding
Sanding disc
6
Masonry, stone
Cutting
Cutting disc and cutting guide
(Cutting masonry/stone is permitted only
with use of the cutting guide)
6
OBJ_BUCH-360-001.book Page 47 Monday, March 19, 2007 9:18 AM
