Grinding Or Cutting Wheel Fixing; Putting Into Operation; Motor Electronics; Grinding And Cutting Discs - Narex EBU 125-9 Originalbetriebsanleitung

Additional handle SOFTGRIP
The additional handle (17) can be screwed from the left or right gear-
box (5) side or from the top gearbox (5) part. Thanks to the special de-
sign vibrations are reduced by the additional handle (17).

Grinding or cutting wheel fixing

Attention! Prior to handling the accessories, the power
supply cable has always to be disconnected from the power
source socket!
Mounting with the standard clamping nut
Clean the bottom flange (11) and the clamping nut (13) as well as the
clamping surfaces of the grinding or cutting wheel. Place the bottom
flange (11) (by the recess out) on the spindle (7). Place the grinding or
cutting wheel (12). The bottom flange recess (11) must be inserted pre-
cisely into the grinding wheel or the cutting wheel hole. Then put the
clamping nut (13) on the spindle (7) so that when fixing the grinding
wheel, the clamping nut recess (15) must be faced towards the wheel
and when fixing the cutting wheel, the clamping nut recess (15) must
be directed from the wheel!
Depress the lock spindle pin (3).
Attention! Use the lock spindle pin (3) only if the spindle is
at rest and the grinder is de‑energized.
Swivel the wheel /spindle, until the lock spindle pin (3) is engaged.
Tighten the clamping nut (13) firmly, using the wrench (16).
Attention! Prior to starting the grinder, verify that the
wheel does not rotate freely between the bottom
flange (11) and the clamping nut (13).
Mounting with quick‑clamping nut
The quick-clamping nut must be tightened or loosened by hand only
(never use any additional tool!). Mounting of the grinding or cutting
wheel is the same like for the grinder without the quick-clamping nut,
with the sole difference, that after spindle locking the quick-clamping
nut (14) may be tightened by hand only.
Attention! Do not tighten the quick‑clamping nut without
the wheel not to damage its mechanism!
Attention! Prior to starting the grinder, verify that the
wheel does not rotate freely between the bottom
flange (11) and the clamping nut (14).

Putting into operation

Check whether the data on the rating plate match with the real power
supply voltage. The tool intended for 230 V~ may be also connected to
220/240 V~. Check whether the plug type corresponds to the socket
type.
Switching on
Push the switch (1) forwards, thus switching the machine on. If you de-
press the front switch button part (1), the switch will be arrested in the
ON position.
Switching off
By releasing the switch button (1), the switch will be returned to the
initial position and the machine will be switched off. If the switch (1)
is arrested in the ON position, then by moderate depressing the rear
switch button part (1), the switch will be released and returned to the
initial position, i.e. the machine will be switched off.

Motor electronics

Starting current limitation
Electronically controlled continual running secures device acceleration
without back thrust. Due to starting current limitation in the device,
16 A protection is suffi cient.
Switching off during back thrust
During sudden drop of revolutions, for example blocking in dividing cut,
the current input in motor stops. For re-starting, the device must be first
switched off and again switched on.
Protection against re‑starting
Prevent uncontrolled starting of the device after current supply cut off.
For re-starting, the device must be fi rst switched off and again switched
on.

Grinding and cutting discs

Check that the label on the disc shows the permissible peripheral speed
or permissible revolution speed.
If the permissible revolution speed is given on the disc, it must not be
lower than the highest no-load speed of the grinder.
Discs with a permissible peripheral speed of 80 m/s and higher may be
used.
Test new cutting discs by letting them run for about one minute with
no load.
Unbalanced or vibrating discs should not be used and should be dis-
carded.
Protect grinding discs from shock, impact and lubricants.
If the grinding and cutting wheels are worn down to the mark on the
wheel guard (see the arrow sign), they should be replaced with new
ones. This maintains the optimum grinding and cutting performance
of the machine (peripheral speed of the grinding and cutting wheels).

Maintenance and service

Attention! Risk of el. shock. Prior to start any operation,
pull the plug out of the socket!
Vent holes (2) of the motor guard may not be covered.
Cable replacement must be carried out by a specialized service station
authorized correspondingly.
After ca 200 hours of operation the following activities and works
have to be carried out:
Check of brush length. The brushes shorter than 5 mm have to be re-
placed for new ones.
The grinder will be stopped automatically if the brushes are worn. The
grinder is sent to the service station for maintenance.
Grease replacement in gearbox and bearings.
Attention! With respect to protection from el. shock and
preservation of the class of protection, all maintenance
and service operations requesting jig saw case removal
must be performed by the authorized service centre only!
The current list of authorized service centres can be found at our website
www.narex.cz, section "Service Centres".

Storage

Packed appliance may be stored in dry, unheated storage place with
temperature not lower than -5 °C.
Unpacked appliance should be stored only in dry storage place with
temperature not lower than +5 °C with exclusion of all sudden temper-
ature changes.

Environmental protection

Power tools, accessories and packaging should be sorted for environ-
mental-friendly recy.
Only for EU countries:
Do not dispose of power tools into household waste!
According to the European Directive 2002/96/EC on waste electrical and
electronic equipment and its incorporation into national law, power
tools that are no longer suitable for must be separately collected and
sent for recovery in an environmental-friendly manner.
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