12.
The
floor
must
be
brushed
before
grinding
because
loose
material
could
get
into
the
tools
and
fly
away.
Anchor
screws
and
bolts
coming
out
of
the
floor
can
also
be
seen
better
if
the
floor
is
clean.
If
the
grinding
head
hits
a
anchor
screw
or
bolt
then
serious
damage
can
be
caused
to
the
machine
or
grinding
head.
5
Operating
Disconnect
the
grinder
from
the
power
supply!
After
mounting
the
appropriate
tools,
the
operation
of
the
grinder
can
begin.
Adjust
the
grinder
by
loosening
the
screws
of
the
rear
wheel
swing
(Appendix
diagram
No.
3)
and
changing
its
position
in
the
slots
so
that
the
motor
axis
is
90°
level
to
the
floor.
Tighten
the
screws
again.
Connect
the
grinder
to
the
mains.
Lift
the
tool
from
the
floor
by
tilting
the
machine
onto
its
back
wheels.
Switch
the
motor
on.
Attention,
when
switching
on
the
motor,
beware
the
machine
jumps
slightly.
After
the
motor
has
reached
full
speed,
place
the
grinding
head
carefully
on
the
floor.
If
the
machine
is
correctly
adjusted
(see
above)
it
is
easy
to
move
across
the
floor.
If
the
machine
pulls
to
the
left
or
right,
the
machine
has
to
be
re
‐
adjusted
by
changing
the
position
of
the
rear
wheel
swing
(see
above).
Attention:
Never
switch
the
motor
on
while
the
grinding
head
is
on
the
floor.
Dust
emission
should
be
prevented
by
connecting
a
dust
collector.
Before
finishing
the
grinding
process
the
machine
must
be
switched
off
and
the
tools
have
to
be
brought
to
a
stand
still
by
letting
them
touch
the
floor.
Disconnect
from
the
power
supply.
6
Changing
of
the
tools
Attention:
Before
working
on
the
grinder
bring
the
motor
to
a
total
stand
still
and
disconnect
from
the
power
supply.
Attention:
Tools
can
be
hot
after
use.
‐
Tilt
the
machine
onto
the
back
wheels
and
rest
it
on
the
handlebar.
‐
All
tool
discs
are
fixed
with
three
Allen
screws
to
the
tool
bracket.
Appendix
„Alpha
®
tools“
No.
10.
‐
Remove
the
screws
with
an
8mm
Allen
key.
‐
Check
the
grinding
tool
for
wear
and
tear
for
the
next
application.
‐
Fix
new
tools
according
to
the
appendix
„Alpha
®
tools“.
‐
Adjust
the
different
heights
of
the
tools
by
changing
the
position
of
the
rear
wheel
swing
(see
chapter
6
Operating).
The
motor
axis
of
the
grinder
has
to
be
90°
level
to
the
floor.
