Посібник Hitachi H 41MB Відбійний молоток

Посібник

4

English

* Operate this Demolition Hammer by utilizing its empty

weight. The performance will not be better even if it is

pressed or thrust forcibly against the work surface.

Hold this Demolition Hammer with a force just suffi cient

to counteract the reaction.

CAUTION

After long time of use, the cylinder case becomes hot.

Therefore, be careful not to burn your hands.

GREASE REPLACEMENT

This machine is of full air-tight construction to protect against

dust and to prevent lubricant leakage. This machine can be

used without grease supplement for an extended period of

time. However, perform the grease replacement to maintain

the service life. Replace the grease as described below.

1. Grease Replacement Period

You should look at the grease when you change the

carbon brush. (See item 4 in the section MAINTENANCE

AND INSPECTION.) Ask for grease replacement at the

nearest authorized Hitachi Service Center.

In the case that you are forced to change the grease by

yourself, please follow the following points.

2. How to replace grease

CAUTION

Before replacing the grease, turn the power off and pull

out the plug from the receptacle.

(1) Remove the crank cover and wipe off the old grease

inside.

(2) Supply 35g (the standard volume to cover the connecting

rod) of Hitachi Electric Hammer Grease A to the crank

case.

(3) After replacing the grease, install the crank cover

securely.

NOTE

The Hitachi Electric Hammer Grease A is of the low

viscosity type. When the grease is consumed, purchase

from an authorized Hitachi Service Center.

MAINTENANCE AND INSPECTION

CAUTION

Be sure to switch OFF and disconnect the attachment

plug from the receptacle to avoid a serious accident.

1. Inspecting accessories

Since use of a dull accessory, such as a bull point, a

cutter, etc. will degrade effi ciency and cause possible

motor malfunction, sharpen or replace with a new one as

soon as 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. 5)

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. 5. In addition,

always keep carbon brushes clean and ensure that they

slide freely within the brush holders.

5. Replacing carbon brushes (Fig. 5)

Loosen the set screw 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.

CAUTION

In the operation and maintenance of power tools, the

safety regulations and standards prescribed in each

country must be observed.

GUARANTEE

We guarantee Hitachi 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 Hitachi 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 each 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 vibration

Vibration total values (triax vector sum) determined

according to EN60745.

Chiselling:

Vibration emission value

a

h

, Cheq =

14.7 m/s

2

Uncertainty K = 4.5 m/s

2

The declared vibration total value has been measured in

accordance with a standard test method and may be used

for comparing one tool with another.

It may also be used in a preliminary assessment of exposure.

WARNING

○ The vibration emission during actual use of the power

tool can diff er from the declared total value depending in

the ways in which the tool is used.

○ 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 HITACHI’s continuing program of research and

development, the specifi cations herein are subject to

change without prior notice.

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