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Narex EBU 150-14 CEA Originalbetriebsanleitung Seite 19

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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 design vibrations are reduced by the additional
handle (17).
Autobalancer (self‑balancing assembly)
Autobalancer (11) is pressed on the grinder spindle by the manufactur-
ing plant and other angular grinders cannot be equipped by the Auto-
balancer additionally. By its design Autobalancer reduces the vibrations
generated as the consequence of wheel disbalance, thus protecting the
operator from their harmful impact effectively.
Note: Autobalancer (11) replaces the bottom flange.
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 clamping nut (13) as well as the clamping surfaces of the
grinding or cutting wheel. Place the grinding (12) or cutting wheel (12).
Then put the clamping nut (13) on the spindle (7) so that when fixing
the grinding wheel (12), the clamping nut recess (15) must be faced to-
wards the wheel and when fixing the cutting wheel (12), 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 autobalanc‑
er (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 autobalanc‑
er (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.
Revolutions pre‑setting
Use the revolutions regulator (4) for smooth revolutions pre-setting.
1
3 500 rpm
2
4 600 rpm
3
6 000 rpm
4
7 200 rpm
5
8 500 rpm
6
10 000 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 tem-
perature is reached. Motor continues running at approximately ½ revo-
lutions, constant electronics is deactivated.
After cooling to approximately 10–20 s, the device is fully operational.
Heat protection for devices heated during operation, reacts adequately
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 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
English
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