Narex EBU 15-16, Original Operating Manual

Page: 15 / 36

English
15
Smooth starting
After the grinding machine is switched ON, the control electronics
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.
Constant speed
Speed of this grinding machine is constant under the standard load (under
absolute load relief alike); this way productivity of labour under load does
not drop. Note: Thanks to speed reduction during no-load operation the
noise exposure is reduced as well.
Motor protection from burnout
The control electronics measures motor temperature continuously, thus
preventing its burnout. If the motor temperature is dangerously high, the
machine will be switched to the cooling mode automatically. Do not work
with the grinding machine in this state. If you work with the overloaded
grinding machine, the control electronics will switch the motor OFF. If
you switch the overloaded grinding machine OFF and ON immediately
afterwards, the machine will at first be started to the full operating load and
after ca 2 seconds it will be switched to the cooling mode again. Let motor
cool at the “cooling” speed. Cooling lasts ca 1 minute as a rule. The machine
then returns back to the full working speed and you can continue working.
Protection from wheel lock
When cutting, the wheel can be locked in the cut. To eliminate the risk of
operator’s injury or machine burnout, the electronics reacts to steep load
rise by switching the motor OFF. The stopped motor cannot be rotated and
a quiet droning can be heard. To restart the machine, switch it OFF and ON
afterwards.
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
–1
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 performance of the machine
(peripheral speed of the grinding and cutting wheels).
Maintenance
Vent holes (3) 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 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.
To preserve the class of protection, the grinder must be inspected and
checked from the point of safety.
These works must be carried out by a specialized service station
authorized correspondingly.
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
environmental-friendly recycling.
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.
Warranty
Our equipment is under warranty for at least 12 months with regard to
material or production faults in accordance with national legislation. In the
EU countries, the warranty period for exclusively private use is 24 months
(an invoice or delivery note is required as proof of purchase).
Damage resulting from, in particular, normal wear and tear, overloading,
improper handling, or caused by the user or other damage caused by not
following the operating instructions, or any fault acknowledged at the time
of purchase, is not covered by the warranty.
Complaints will only be acknowledged if the equipment has not been
dismantled before being sent back to the suppliers or to an authorised
NAREX customer support workshop. Store the operating instructions, safety
notes, spare parts list and proof of purchase in a safe place. In addition, the
manufacturer’s current warranty conditions apply.
Information about noise level and vibrations
The values have been measured in conformity with EN 60745.
Acoustic pressure level L
pA
= 94 dB (A).
Acoustic power level L
wA
= 107 dB (A).
In accuracy of measurements K = 3 dB (A).
Wear noise protectors!
The weighted value of vibrations affecting hands and arms: 4 m.s -2 .
In accuracy of measurements K = 1.5 m.s -2 .
Certificate of Conformity
We declare that the device meets requirements of the following standards
and directives.
Safety:
EN 60745-1; EN 60745-2-3
Directive 98/37/EC (till 28. 12. 2009); 2006/42/EC (from 29. 12. 2009)
Electromagnetic compatibility:
EN 55014-1; EN 55014-2; EN 61000-3-2;EN 61000-3-3
Directive 2004/108/EC
2009
Narex s.r.o.
Chelčického 1932
Antonín Pomeisl
470 01 Česká Lípa CEO of the company
01. 12. 2009
Changes are reserved