English
14
Electronic speed pre-selection
Using the pre-selection wheel (10) the required pre-selected speed is set–
even if the machine runs. The necessary speed depends on the type of the
material drilled, and a practical test is recommended to verify it.
If the machine is loaded considerably, adjust the pre-selection wheel (10) to
the marginal position in the + direction (max speed – control disconnected).
After a longer work at low speed leave the machine run idle for 3 minutes at
maximum speed to cool the engine down.
Gear shiftiDobng
Use the speed lever (8) to adjust the 2nd speed gear:
1. Speed – lower speed gear – higher torque
2. Speed – higher speed gear – lower torque
In any speed gear you can adjust the final speed by means of the electronic
pre - selection. However, firstly select the mechanical speed gear.
Changing the gears can be done at slowing the machine down or in idle run
but never when the machine is fully loaded. Once the gear is changed, leave
the machine start up slowly.
Change in rotation
Adjust the rotation direction switch (9) to the right (left run) or to the left
(right run). The left run allows e.g. cutting the threads and unscrewing of
bolts or nuts.
Changing is blocked if the controller button is pressed. The rotation
direction has to be changed when the machine is idle.
WARNING! If the left run is used, the chuck has to be screwed on very
firmly.
Drilling and impact drilling
Use the impact lever (4) to gear the impact up or down. The shifting can be
done even when the machine runs.
Drilling
Shift the gear lever (4) to the left towards the drill-bit
symbol.
Impact drilling
Shift the gear lever (4) to the right towards the hammer
symbol.
The impact drilling is recommended to be used in
concrete, brickwork and earthenware. The switch lever (9)
must be always shifted to the right run.
Removing the chuck with ring gear
Hold the spindle on the surface (2) using an open wrench (17 mm). Insert
the chuck hook (16) into a single opening on the chuck and by turning left
screw the chuck out. Release the firmly clamped chuck by impacts of the
hammer on the chuck hook (16).
Removing the quick-tightening chuck
Clamp the hexagonal wrench (18) into the chuck. Hold the spindle on
the surface (2) using a spanner (17 mm). By turning the chuck to the left
using the hexagonal wrench screw the chuck together. Release the firmly
clamped chuck by impacts of the hammer on the hexagonal wrench.
Screwing
The drilling spindle (15) is for clamping the screw shafts (13) provided with
an inner hexagonal. Once the chuck is removed, you can put the screw shaft
directly into the drilling spindle. Before that, slide a cover (14) onto the
spindle thread which protects the shaft from falling out.
Work instructions
Drill bits
For steel use perfect and sharpened drill bits made of good-quality
high - speed steel.
Drilling stands
For precise drilling on smaller parts, use of a drilling stand is recommended.
Clamping device
Clamp the worked pieces properly into the screw-type clamping unit. Thus
turning of the piece is avoided, as well as a potential accident.
Drilling in tiles
Shift the impact gear lever (4) to the drill-bit symbol. Once the upper layer is
drilled through, shift the impact gear lever to the hammer symbol.
Thread cutting
Clamp the screw tap properly in the chuck using a considerable power,
otherwise it will slide through.
Maintenance
The vent holes (5) of the engine cover must not get plugged.
After about 100 hours of operation the following works need to be
done:
- Check of the brushes length Brushes shorter than 5 mm must be
replaced with new ones.
After about 200 hours of operation the following works need to be
done:
- Exchange of lubricating grease in the gearbox and bearings.
To keep the protection class the machine needs to be checked in terms
of safety, and therefore these works must be carried out in an authorised
electric workshop holding the relevant licence to perform these kinds of
activities.
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.
Drilling
Acoustic pressure level L
pA
= 79 dB (A)
Acoustic power level L
wA
= 92 dB (A)
In accuracy of measurements K = 3 dB (A)
Percussion drilling
Acoustic pressure level L
pA
= 101 dB (A)
Acoustic power level L
wA
= 114 dB (A)
In accuracy of measurements K = 3 dB (A)
CAUTION! Operating noise.
Use ear protection!
Vibration emission value ah (vector sum for three directions) and
uncertainty K measured in accordance with EN 60 745:
Drilling a
h,D
= 2.5 m/s
2
Percussion drilling a
h,ID
= 4.5 m/s
2
In accuracy of measurements K = 1,5 m/s
2
The emission values specified (vibration, noise) were measured in
accordance with the test conditions stipulated in EN 60745 and are intended
for machine comparisons. They are also used for making preliminary
estimates regarding vibration and noise loads during operation.
The emission values specified refer to the main applications for which the
power tool is used. If the electric power tool is used for other applications,
with other tools or is not maintained sufficiently prior to operation,
however, the vibration and noise load may be higher when the tool is used.
Take into account any machine idling times and downtimes to estimate
these values more accurately for a specified time period. This may
significantly reduce the load during the machine operating period.
