Insert the clamping shaft of the abrasive wheel all the way
into the collet chuck.
Tighten down tensioning nut.
The abrasive wheels must run true. Do not use
abrasive wheels which have gotten out of round.
Trial run!
Check grinding tools before use. The grinding tool must
be correctly mounted and must rotate freely. Perform a
trial run a minimum over a period of 30 seconds without
load. Do not used grinding tools which are damaged,
which do not run true or which vibrate!
3.4 W
orking
instructions
• To achieve an optimum grinding result, move
grinding wheel uniformly back and forth with light
pressure.
• The electronic constant control maintains the speed
nearly constant during idling and work under load
and assures a uniform result.
• Excessive pressure lessens the working capability of
the machine, as well as the life of the grinding wheel.
• The machine is equipped with an electronic control
and integrated overload protection.
• If the machine is overloaded, the speed will drop
drastically. Immediately take the load off the machine
and allow to run for a short time without load.
4. S
ervice
/ m
aintenance
4.1 p
reventive
mAintenAnce
To work effectively and surely keep the machine
and the ventilation slots clean at all times.
When machining metal under extreme working
conditions conductive dust can deposit inside
the machine, which can deteriorate the insulation
of the tool.
In such cases the use of a stationary vacuuming
system, frequent blowing out of the ventilation
slots and protection with a fault-current protec-
tion switch are advisable.
4.1.1 c
hAnging
the
cArBon
Brushes
The Automatic-Stop feature protects the machine
from defects due to excessively consumed car-
bon brushes.
The machine is equipped with two carbon brush-
es, i.e. one is installed in each handle half.
The carbon brushes must be changed as follows:
Unscrew four screws and remove the handle halves.
Lift spring with screwdriver and remove brush. Install new
brushes. Clean carbon brush holders, making absolutely
sure not to change the carbon brush arrangement of the
carbon brush assembly. Fit handle halves and fasten with
four screws.
18
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ortugúes
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