Bedienungsanleitung Hikoki DH52MA (Seite 12 von 120) (Alle Sprachen)

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MAINTENANCE AND INSPECTION

1. Inspecting the tool bits

Since use of a dull tool will cause motor malfunctioning and

degraded eﬃ ciency, replace the tool bit with new ones or

resharpen them without delay when abrasion is noted.

2. Inspecting the mounting screws

Regularly inspect all mounting screws and ensure that

they are properly tightened. Should any of the screws be

loose, retighten them immediately. Failure to do so could

result in serious hazard.

3. Maintenance of the motor

The motor unit winding is the very “heart” of the power tool.

Exercise due care to ensure the winding does not

become damaged and/or wet with oil or water.

4. Inspecting the carbon brushes (Fig. 14)

The Motor employs carbon brushes which are

consumable parts. When they become worn to or near

the “wear limit” ⓐ, it results in motor trouble.

When an auto-stop carbon brush is equipped, the motor

will stop automatically. At that time, replace both carbon

brushes with new ones which have the same carbon

brush Numbers ⓑ shown in the Fig. 14. In addition,

always keep carbon brushes clean and ensure that they

slide freely within the brush holders.

5. Replacing carbon brushes (Fig. 14)

Loosen the two set screws and remove the tail cover.

Remove the brush caps and carbon brushes. After

replacing the carbon brushes, do not forget to tighten the

brush caps securely and to install the tail cover.

6. Replacing supply cord

If the replacement of the supply cord is necessary, this

has to be done by the manufacturer of this agent in order

to avoid a safety hazard.

CAUTION

In the operation and maintenance of power tools, the

safety regulations and standards prescribed in each

country must be observed.

GUARANTEE

We guarantee HiKOKI Power Tools in accordance with

statutory/country speciﬁ c regulation. This guarantee does

not cover defects or damage due to misuse, abuse, or

normal wear and tear. In case of complaint, please send

the Power Tool, undismantled, with the GUARANTEE

CERTIFICATE found at the end of this Handling instruction,

to a HiKOKI Authorized Service Center.

IMPORTANT

Correct connection of the plug

The wires of the main lead are coloured in accordance

with the following code:

Blue: — Neutral

Brown: — Live

As the colours of the wires in the main lead of this tool may

not correspond with the coloured markings identifying the

terminals in your plug proceed as follows:

The wire coloured blue must be connected to the terminal

marked with the letter N or coloured black. The wire

coloured brown must be connected to the terminal marked

with the letter L or coloured red. Neither core must be

connected to the earth terminal.

NOTE:

This requirement is provided according to BRITISH

STANDARD 2769: 1984.

Therefore, the letter code and colour code may not be

applicable to other markets except The United Kingdom.

Information concerning airborne noise and vibration

The measured values were determined according to

EN62841 and declared in accordance with ISO 4871.

Measured A-weighted sound power level: 108 dB (A)

Measured A-weighted sound pressure level: 97 dB (A)

Uncertainty K: 3 dB (A).

Wear hearing protection.

Vibration total values (triax vector sum) determined

according to EN62841.

Hammer drilling into concrete:

Vibration emission value ah, HD = 15.1 m/s2

Uncertainty K = 1.5 m/s2

Equivalent chiselling value:

Vibration emission value ah, CHeq = 10.8 m/s2

Uncertainty K = 1.5 m/s2

The declared vibration total value and the declared noise

emission value have been measured in accordance with a

standard test method and may be used for comparing one

tool with another.

They may also be used in a preliminary assessment of

exposure.

WARNING

○ The vibration and noise emission during actual use

of the power tool can diﬀ er from the declared total

value depending on the ways in which the tool is used

especially what kind of workpiece is processed; and

○ Identify safety measures to protect the operator that

are based on an estimation of exposure in the actual

conditions of use (taking account of all parts of the

operating cycle such as the times when the tool is

switched oﬀ and when it is running idle in addition to the

trigger time).

NOTE

Due to HiKOKI’s continuing program of research and

development, the speciﬁ cations herein are subject to

change without prior notice.

Information for power supply system to be used with

electric tools provided with rated voltage 230 V~

Switching operations of electric apparatus cause voltage

ﬂ uctuations.

The operation of this electric tool under unfavorable mains

conditions can have adverse effects to the operation of

other electric apparatus.

With a mains impedance equal or less than 0.327 Ohms

there will probably be no negative eﬀ ects.

Usually, the maximum permissible mains impedance will

not be exceeded when the branch to the power outlet is fed

from a junction box with a service capacity of 25 ampere or

higher.

In case of power failure, or when the power plug is pulled

out, immediately return the switch to OFF position. This

prevents an uncontrolled restart.

00BookDH52MA.indb1200BookDH52MA.indb12 2022/12/2717:57:132022/12/2717:57:13

Hikoki DH52MA Seite 12

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