Narex EBU 125-12 C, Original Operating Manual

English

22

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 depress 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 ac-

celeration without back thrust. Due to starting current limita-

tion 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 sup-

ply cut off. For re-starting, the device must be fi rst switched off 

and again switched on.

Revolutions pre‑setting (EBU 125‑14 CE)

Use the revolutions regulator  (4) for smooth revolutions 

pre-setting.

1

3 500 rpm

2

4 600 rpm

3

6 000 rpm

4

7 600 rpm

5

8 900 rpm

6

11 000 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 temperature is reached. Motor continues running at 

approximately ½  revolutions, constant electronics is deacti-

vated.
After cooling to approximately 10–20 s, the device is fully op-

erational.
Heat protection for devices heated during operation, reacts 

adequately sooner.

Grinding and cutting discs

Check that the label on the disc shows the permissible periph-

eral 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 min-

ute 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 re-

placed 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 oper‑

ation, 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 replaced for new ones.
The grinder will be stopped automatically if the brushes are 

worn. The grinder is sent to the service station for mainte-

nance.
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 request‑

ing jig saw case removal must be performed by the au‑

thorized 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 

environmental-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 environ-

mental-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 oth-

er damage caused by not following the operating instructions, 

or any fault acknowledged at the time of purchase, is not cov-

ered by the warranty.