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Swivel the wheel /spindle, until the lock spindle pin (3) is engaged.
Tighten the clamping nut (14a) 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 (14a).
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 (14b) 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 (14b).
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 corre-
sponds to the socket type.
Switching on
Push the switch (1) forwards, thus switching the machine on. If you
depress 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 depress-
ing 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 accel-
eration 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 divid-
ing 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.
Revolutions pre-setting (EBU 13-14 CE)
Use the revolutions regulator (4) for smooth revolutions pre-set-
ting.
1
3 500 rpm
2
4 600 rpm
3
6 000 rpm
4
7 600 rpm
5
8 900 rpm
6
11 000 rpm
Required number of revolutions depends on applied grinding
wheel and worked material.
Constant electronics
Constant electronics maintains revolutions during operation and
idle run near the constant. Regular operating shift is achieved.
Protection from overloading dependant on
temperature
The safety electronics switches to cooling regime when the critical
temperature is reached. Motor continues running at approximately
½ revolutions, constant electronics is deactivated.
After cooling to approximately 10–20 s, the device is fully opera-
tional.
Heat protection for devices heated during operation, reacts ad-
equately sooner.
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
discarded.
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 per-
formance of the machine (peripheral speed of the grinding and
cutting wheels).
Maintenance and service
Attention! Risk of el. shock. Prior to start any opera-
tion, 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 sta-
tion 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
replaced 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 mainte-
nance 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 sud-
den temperature changes.
Environmental protection
Power tools, accessories and packaging should be sorted for envi-
ronmental-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 electri-
cal 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 man-
ner.
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