Orking Instructions; S Ervice / M Aintenance; P Reventive Maintenance; C Hanging The Carbon Brushes - SUHNER UBK 6-R Documentación Técnica

Relieves the grinding belt by pressing on the head piece
to replace it.
Trial run!
Check the grinding belt before use. The grinding
belt must be installed properly and run without
hindrance. Do a test run for at least thirty seconds without
load. Do not use damaged, eccentric, or vibrating grind-
ing belts.
3.4 w

orKing instructions

The optimal grinding results are obtained when the grind-
ing belt is steadily moved back and forth under slight
pressure. The control electronics keep the belt speed
virtually constant during idle and load conditions for as-
sured, consistent work results. Too great a pressure re-
duces machine efficiency and the grinding belt's useful
life. The machine is equipped with an electronic control
and integrated overload protection. If the machine is over-
loaded the belt blocks briefly. Immediately remove all
loads on the machine and keep it running in the unloaded
state for a short time. Select a suitable belt speed.
When the contact pressure is too low the belt may
slip on the drive roller!
4. S
ervice
4.1 P
reVentiVe mAintenAnce
To work effectively and surely keep the
machine and the ventilation slots clean at
all times.
After approx. 150 operating hours check carbon brushes
and replace if necessary. Clean motor housing and re-
plenish grease filling in gearbox housing. To maintain the
protective insulation the machine must be subjected to a
technical safety inspection. This work must be done ex-
clusively by a specialized electrical workshop.
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 blow-
ing out of the ventilation slots and protection with a fault-
20
/ m
aintenance
current protection 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 brushes, 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.
Repeat this change on the opposite side, making
absolutely sure to avoid both handle halves from
being opened at the same time.
4.2 s

PAre PArts

See page 2.3.
4.3 r
ePAir
If despite strict observance of the manufacturing and test-
ing method the tool should happen to fail, it must be re-
paired by an authorized SUHNER agency.
Any replacement needed for the connecting line must be
installed by the manufacturer or its agent if safety risks are
to be eliminated.
4.4 w
ArrAnty
In the event of the tool being improperly handled, used
for purposes for which it is not intended and/or of the ser-