Grinding Or Cutting Wheel Fixing; Putting Into Operation; Motor Electronics; Grinding And Cutting Discs - Narex EBU 230 -26 Instrucciones De Uso

standard angular grinder outfit. When cutting, the angular
grinder has to be equipped by the protective guard intend‑
ed for work with the cutting wheels; it can be purchased
in the trade network under the order No. 65 404 969 for
dia. 230 mm. Failing to use the guard for cutting, you run the
increased risk of injury and in this case (non‑use of the special
guard for cutting) the company Narex is not liable anyhow for
possible harm of health of the user or another person injured
as the consequence of breach of the safety rules.
Release the locking screw (7). Attach the protection guard (8)
onto the spindle collar (6). Adjust the position of the protection
guard (8) to the application. Tighten the locking screw (7). For
safety reasons the bolt has to be tightened with 4+0.5 Nm torque.

Grinding or cutting wheel fixing

Attention! Prior to handling the accessories, the pow‑
er supply cable has always to be disconnected from
the power source socket!
Clean the bottom flange (11) and the clamping nut (9) as well as
the clamping surfaces of the grinding or cutting wheel. Place the
bottom flange (11) (by the recess out) on the spindle (12). Place the
grinding (10) or cutting wheel (15). The bottom flange recess (11)
must be inserted precisely into the grinding wheel (10) or the cut-
ting wheel (15) hole. Then put the clamping nut (9) on the spin-
dle (12) so that when fixing the grinding wheel (10), the clamping
nut recess (15) must be faced towards the wheel and when fixing
the cutting wheel (15), the clamping nut recess (15) must be di-
rected from the wheel!
Depress the lock spindle pin (13).
Attention! Use the lock spindle pin only if the spindle is at rest
and the grinder is de‑energized.
Swivel the wheel /spindle, until the lock spindle pin (13) is engaged.
Tighten the clamping nut (9) firmly, using the wrench (14). Prior to
start the grinder verify that the wheel does not rotate freely.
Attention! Prior to starting the grinder, verify that the wheel
does not rotate freely between the bottom flange/the auto‑
balancer and the clamping nut.

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‑ off
Push the safety lock-off lever (2) forwards to release the On/Off
switch lever (1). At the same time, press the on-off switch lever (1)
to start the grinder and release it to stop.
Continuous operation
Push the safety lock-off lever (2) forwards to release the On/Off
switch lever (1). At the same time, press the on-off switch lever (1)
and push the safety lock-off lever (2) forwards. To turn off continu-
ous operation, press and release the on-off switch (1) again.

Motor electronics

Increases productivity, service life of the grinding machine, com-
fort at work, quality and safety of labour. Its features are as follows:
Restart protection
If power supply is interrupted at work (disconnection of the supply
cable plug, tripping, cutout, etc.) and the switch remains arrested
in the ON position, after resumption of power supply the machine
will not be restarted automatically. To start the grinding machine,
the switch has to be switched OFF at first and ON afterwards.
Smooth starting
After the grinding machine is switched ON, the control electron-
ics guarantees smooth start and running up to the working speed
without unnecessary shocks. This way service life of the grinding
machine may be extended and wear of the gear reduced.

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 (3) of the motor guard may not be covered.
Cable replacement must be carried out by a specialized service sta-
tion authorized correspondingly.
After ca 150 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 sudden
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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