W Orking Instructions; Service & Maintenance; P Reventive Maintenance - SUHNER ABRASIVE UWK 10-R125 Originalbetriebsanleitung

Fit the grinding disc. The raised centering rim of the back-
ing flange must engage exactly in the bore of the grinding
wheel.
Tighten down clamping nut with two-hole nut drive.
The grinding tools must run true. Do not use grind-
ing tools which have gotten out of round. Trial run!
Check grinding tools before use. The grinding tool
must be correctly mounted and must rotate freely. Per-
form a trial run a minimum over a period of 30 seconds
without load. Do not used grinding tools which are dam-
aged, which do not run true or which vibrate!
3.4 w
orKing instructions
To achieve an optimum grinding result, move grinding
rool 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
tool. The machine is equipped with an electronic control
and integrated overload protection. If the machine is over-
loaded, 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
4.1 p
reVentiVe mAintenAnce
To work effectively and surely keep the
machine and the ventilation slots clean at
all times. Check carbon brushes and re-
/ m
aIntenance
place if necessary. Clean motor housing and replenish
grease filling in gearbox housing. When the brushes are
spent, the machine will stop automatically (230V).
To maintain the protective insulation the machine must be
subjected to a technical safety inspection. This work must
be done exclusively by a specialized electrical workshop.
When working on metal under extreme working conditions
conductive dust deposits can occur inside the machine,
thereby impairing the protective insulation of the machine.
In such cases the use of a stationary vacuuming system,
frequent blowing out of the ventilation slots and protection
by a fault current protection switch are advised.
4.1.1 c
hAnging the cArBon Brushes
The Automatic-Stop feature protects the machine
from defects due to excessively consumed car-
bon brushes (230V). The machine is equipped
with two carbon brushes, i.e. one is installed in each han-
dle 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 arrangement of the elements 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.
23