SUHNER USC 25-R Dossier Technique page 4

Suitable Tools
General: If possible always mount shank in collet until it bottoms
out.
USC 25-R
10 Burs, specialty abrasives,
materials conditioning products
11 Mounted points, Attention: always observe mounting instruc-
tions.
USC 9-R
12 Non-woven Nylon Abrasives, deburring, cleaning and fi-
nishing tools.
Additional Abrasives and Tools can be found in the the
catalogs.
Safety Instructions
• Do not exceed max. operating speed of tool and clamping
element.
• Observe accurate mounting of tools.
• Secure work, use clamps or vise to hold work.
• The grinder operator shall wear safety goggles or face shield
at all times when the grinder is in operation.
• If noise level exceeds 85 dB(A) at the work station, sound
insulation and hearing protection measures must be taken by
the operator.
• For additional personal protection, it is advisable to connect
tool to a ground fault circuit interrupter,(only in damp areas).
For additional safety instructions refer to enclosed brochure EW
30003471.
Before Start-up
Voltage Warning
Before connecting tool to a power source, be sure the voltage
supplied is the same as specified on the name plate of the tool.
The power supply should not vary more than 10% above or below
the voltage indicated on the nameplate.
On-off switch
Before connecting power cord to receptacle, make sure that
switch 8 is in the Off -0- Position.
Operation conditions and instructions
This tool is equipped with an electronic variable speed tachome-
ter selector and an overload cut-out switch, which operates as
follows:
1. Soft start
2. With increased work pressure more current is drawn , which
virtually holds speed at a constant rpm.
3. If the motor is overloaded, the electronic cuts off the power. In
this event switch at once to OFF position, restart right away to
assure cooling effect in no load mode. Repeated automatic
cut off indicates, tool is being overloaded.
Attention: Even if the cut-out is not activated, danger of over-
loading always exists, thus don't force the tool in order not to
increase unnecessarily excessive current draw, which overheads
the motor.
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03925201_G_BA_USC25R_USC9R.indd 4
Speed selection
Select required speed with variable speed selector 9 for correct
surface feet./M.O.S.
Speed selector USC 9-R
Position rpm
1 4 000
2 5 000
3 6 000
4 7 000
5 8 000
6 9 000
Attention: Do not change pre-selected speed while tool is running
and has working tools mounted.
Do not treat any material containing asbestos.
Disconnect Tools
When changing accessories and abrasives, burs, brushes etc.
• Hold spindle 3 with wrench 7, release or tighten clamping nut
5 with wrench 6. Clean collet and collet holder before installa-
tion.
• Check concentricity, use only vibration free tools and always
observe M.O.S. (Max. operating speed).
Maintenance
• Store tool in a clean, dry place.
• Disconnect tool when not in use and before servicing.
• The ventilator openings for cool air must be kept free and
clean, use air gun to blow out dirt.
• Replace grease in USC 9-R grinder every other time, when
carbon brushes are replaced. Use the
service center nearest you .
• Damaged plugs and cords must be replaced immediately.
• Repairs must only be done by a qualified/licensed electrician,
otherwise it could be hazardous to the operator.
• Any replacement needed for the connecting line must be
installed by the manufacturer or its agent if safety risks are to
be eliminated.
• Warranty claims can only be considered, if tool is returned
complete.
Accessories
All accessories can be found in the
catalog.
Subject to change!
USC 25-R
rpm
11 000
13 000
16 000
19 000
22 000
25 000
authorized
Abrasive Power Tool
12.12.2013 16:17:05