Narex EBU 13-11, Original Operating Manual

English

17

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 (EBU 13-14 E)

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 min

-1

2

4 600 min

-1

3

6 000 min

-1

4

7 600 min

-1

5

8 900 min

-1

6

11 000 min

-1

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 2 500 min

–1

revolutions, 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 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 (2) of the motor guard may not be covered.

Cable replacement must be carried out by a specialized service station au-

thorized 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 au-

thorized correspondingly.

Storage

Packed appliance may be stored in dry, unheated storage place with tem-

perature not lower than -5°C.

Unpacked appliance should be stored only in dry storage place with tem-

perature not lower than +5°C with exclusion of all sudden temperature 

changes.

Environmental protection

Power tools, accessories and packaging should be sorted for environmen-

tal-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 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 ma-

terial 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 dis-

mantled 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 manu-

facturer’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

, acoustic power level L

wA

:

Typ

EBU 13-9

EBU 13-11

EBU 13-14 E

L

pA

91.2 dB (A)

91.2 dB (A)

91 dB (A)

L

wA

102 dB (A)

102 dB (A)

104 dB (A)

In accuracy of measurements K = 3 dB (A).

Wear noise protectors!

The weighted value of vibrations affecting hands and arms a

h

:

Typ

EBU 13-9

EBU 13-11

EBU 13-14 E

a

h

20.25 m/s

2

20.25 m/s

2

4.11 m/s

2

In accuracy of measurements K = 1.5 m/s

2

.

The emission values specified (vibration, noise) were measured in accord-

ance with the test conditions stipulated in EN 60 745 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, how-

ever, 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 signifi-

cantly reduce the load during the machine operating period.

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 2006/42/EC

Electromagnetic compatibility:

EN 55014-1; EN 55014-2; EN 61000-3-2;EN 61000-3-3

Directive 2004/108/EC

 2012

Narex s.r.o. 

Chelčického 1932 Antonín Pomeisl 
470 01  Česká Lípa 

CEO of the company 

 01. 01. 2012

Changes are reserved