Bedienungsanleitung Hitachi H30PV (Seite 7 von 34) (Deutsch, Englisch, Holländisch, Französisch, Italienisch, Spanisch)

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HOW TO USE THE HAMMER (Fig. 9)

1. After placing the tip of the tool on concrete surface,

switch ON.

The switch can be turned ON if the trigger is pulled

and OFF when it is released.

Impact rate of the tool can be controlled steplessly

by varying the amount that the trigger switch is

pulled.

2. By utilizing the empty weight of the machine and

by firmly holding the hammer by both hands, you

can effectively control the subsequent recoil motion.

Proceed at a moderate work-rate, the use of too

much pushing force will impair efficiency.

GREASE REPLACEMENT

This machine is of fully oil sealed construction to

protect against dust incursion and to prevent lubricant

leakage. This machine can be used without grease

replenishment for an extended period of time. However,

perform the grease replacement to extend 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) Disassemble the crank cover and thoroughly wipe

off the old grease inside. (Fig. 10)

(2) Supply 30g (the standard volume to cover the

connecting rod) of Hitachi Electric Hammer Grease

A in the crank case.

(3) After replacing the grease, reassemble the crank

cover securely. At this time, do not damage or lose

the oil seal.

NOTE:

The Hitachi Electric Hammer Grease A is of the low

viscosity type. When the grease is consumed,

purchase from the authorized Hitachi Service

Center.

MAINTENANCE AND INSPECTION

CAUTION

To prevent accidents, make sure to turn the switch off

and disconnect the plug from the receptacle.

1. Inspecting the tool

Since use of a dull tool will degrade efficiency and

cause possible motor malfunction, sharpen or

replace the tool 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. 11)

The Motor employs carbon brushes which are

consumable parts. When they become worn to or

near the “wear limit”, it could result 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 Number shown in the figure.

In addition, always keep carbon brushes clean and

ensure that they slide freely within the brush holders.

5. Replacing carbon brushes:

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 properly and install the tail cover.

6. Service parts list

A: Item No.

B: Code No.

C: No. Used

D: Remarks

CAUTION

Repair, modification and inspection of Hitachi Power

Tools must be carried out by an Hitachi Authorized

Service Center.

This Parts List will be helpful if presented with the

tool to the Hitachi Authorized Service Center when

requesting repair or other maintenance.

In the operation and maintenance of power tools,

the safety regulations and standards prescribed in

each country must be observed.

MODIFICATIONS

Hitachi Power Tools are constantly being improved

and modified to incorporate the latest technological

advancements.

Accordingly, some parts (i.e. code numbers and/or

design) may be changed without prior notice.

NOTE

Due to HITACHI’s continuing program of research and

development, the specifications herein are subject to

change without prior notice.

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.

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