Narex EBU 115-10, Original Operating Manual

English

17

Protective elements and their 

assembly 

The grinder may be used with mounted protective guard (6a; 6b) 

only!

Attention! Prior to handling the accessories, the power 

supply cable has always to be disconnected from the 

power source socket!

Protective guard

Attention! The protective guard intended only and ex‑

clusively for work with the grinding wheels (6a) is the 

integral part of the standard angular grinder equip‑

ment.

While cutting, the angular grinder has to be equipped with the 

protective guard intended for work with cutting wheels (6b) 

which is available under Order No.  65 404 965 (ø  115 mm) and 

65 404 967 (ø 125 mm). Failing to use the guard, you expose your-

self to an increased risk of injury and the Narex company does not 

take any liability for any damage to health of the user or any other 

person that results from non-compliance with safety rules.
Put the protective guard (6a; 6b) on the clamping collet (4). Guide 

lugs (8) must be inserted into the guide grooves (9) on the clamp-

ing collet (4). Set the protective guard (6a; 6b) to the requested 

working position. After that, tighten the clamping bolt (7) with 

suitable tool (Phillips screwdriver) and make sure that the protec-

tive guard (6a; 6b) does not slip spontaneously!

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!

Clean the bottom flange (11) and the clamping nut (12) as well as 

the clamping surfaces of the grinding or cutting wheel (14). Place 

the bottom flange (11) (by the recess out) on the spindle (5). Place 

the grinding or cutting wheel (14). The bottom flange recess (11) 

must be inserted precisely into the grinding wheel or the cutting 

wheel (14) hole. Then put the clamping nut (12) on the spindle (5) 

so that when fixing the grinding wheel, the clamping nut re-

cess (12a) must be faced towards the wheel and when fixing the 

cutting wheel, the clamping nut recess (12a) must be directed 

from the wheel!
Depress the lock spindle pin (2).

Attention! Use the lock spindle pin (2) only if the spin‑

dle is at rest and the grinder is de‑energized.

Swivel the wheel /spindle, until the lock spindle pin (2) is engaged. 

Tighten the clamping nut (12) firmly, using the wrench (13).

Attention! Prior to starting the grinder, verify that the 

wheel does not rotate freely between the bottom 

flange (11) and the clamping nut (12).

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 corre-

sponds 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 depress-

ing 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.

Electronics

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.

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 per-

formance of the machine (peripheral speed of the grinding and 

cutting wheels).

Maintenance and service

Attention! Risk of el. shock. Prior to start any opera‑

tion, pull the plug out of the socket!

Air vents (15a) on the engine housing and the gearbox (15b) may 

not clog up.
Cleaning the anti-dust liner (16)
While working with the angular grinder, it is recommended to carry 

out visual checks on the air vents on the engine housing (15b) in 

order to prevent clogging. Clogged air vents reduce the cooling air 

intake into the engine.
Unscrew the clamping screw (18) and pull the clogged anti-dust 

liners (16) from the engine housing. Use compressed air or clean 

water to remove impurities from the anti-dust liner. Alternatively, 

you can use a soft brush.

Attention! Do not remove the impurities by your own 

exhalation, there is a risk of inhaling them afterwards! 

Do not use water stream from pressure washer, the an‑

ti‑dust liner could be damaged during the process! In case of 

using water to clean up the anti‑dust liner (16), do not forget 

to dry it up completely!

Put the clean anti-dust liners (16) into the corresponding 

grooves (17) and push them gently into place. Secure the anti-dust 

liners with the clamping screw (18).
Cable replacement must be carried out by a specialized service sta-

tion authorized correspondingly.

After ca 150 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.

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”

.