Narex ESR 20 Manual De Instrucciones página 14

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With firm connection, the screwdriver can be used

to screw in the bolts of the below mechanical

properties:

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The required torque time is determined approxi-

mately from the attached diagram:

ESR 20

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ESR 30

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Depending on the type of tightened parts, how-

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ever, each case needs to be tested separately.

Acting of impacts longer than 10 seconds does

not already have any effect on torque increase.

Bolts of smaller dimensions can be

tightened only with soft connection, whilst

the torque time may be even shorter than

1 sec before the bolt is possibly impaired.

Hammering time should not exceed 2 – 3

seconds in this case).

If torsion-bar springs are used, bolt from

M8 can be tightened.

When loosening screwed connections (joints)

(seized bolts, etc.) it may happen that even the

above stated maximum time of mechanism

acting (10 s) is not sufficient. If this happens,

mechanism needs to be left acting interruptedly,

in about 10-second cycle with hammering and

10-second cycle of idle run, after the machine is

cooled.

Environmental Protection/

Disposal

Power tools, accessories and packaging should

be sorted for environmental-friendly recycling.

Only for EC 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 use must be

separately collected and sent for recovery in an

environmental-friendly manner.

Storage

The unit should be stored in a dry place where it

is protected against freezing.

Maintenance

� Air vents (4) of engine cover must not get

plugged.

� Cable may only be replaced in a professional

electric shop, which is authorized to carry out

works of such nature.

After ca 200 hours of operation the following

operations need to be carried out:

� Brush length check Any brushes shorter than

5 mm should be replaced for new ones.

� Exchange of lubrication oil in gearbox and

bearings.

ESR 20

� After about 50 hours check the length of

brushes; any brushes shorter than 5 mm

should be replaced for new ones.

� Exchange of lubrication oil in gearbox.

To preserve the respective protection

class, the machine must be checked in

terms of safety, therefore these works

need to be performed in a professional

electric shop, which is authorized to carry

out works of such nature.

Service

See enclosed sheet.

Guarantee

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 ex-

clusively 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 instruc-

tions, safety notes, spare parts list and proof of

purchase in a safe place. In addition, the manu-

facturer's current warranty conditions apply.

Note

We reserve the right to make changes to the

technical data contained in this information as a

result of ongoing research and development

work.

Noise level and vibrations

Values measured were in accordance with

EN 60 745.

ESR 20

The acoustic pressure level: 103 dB (A).

The acoustic output level: 116 dB (A).

Use noise-suppressing protective aids.

Weighed vibration level acting on hands and

arms: 3.5 m/s

Inaccuracy of measurement K=2 dB (A).

ESR 30

The acoustic pressure level: 110 dB (A).

The acoustic output level: 123 dB (A).

Use noise-suppressing protective aids.

Weighed vibration level acting on hands and

arms is typically lower than 3.5 m/s

Inaccuracy of measurement K=2 dB (A).

Declarations of conformity

We declare under our sole responsibility that

this product is in conformity with the following

standards or standardization documents:

EN 60 745-1, EN 60 745-2-2, EN 55 014-1,

EN 55 014-2, EN 61 000-3-2, EN 61 000-3-3

according to the provisions of the regulations

89/336/EEC, 98/37/EC.

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Narex ESR 20 Manual De Instrucciones página 14

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