Bedienungsanleitung Hitachi DH 18DL (Seite 19 von 108) (Deutsch, Englisch, Holländisch, Französisch, Italienisch, Portugiesisch, Spanisch)

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8. Switching between the “SAVE“ and the “POWER“

modes

The hammering force of the hammer can be

increased or decreased to conform with intended

usage, by operating the shift knob as per Fig. 24.

Adjust the force to match the usage intended.

(1) “SAVE“ mode ... decreased hammering force

This can prevent thin drill bits which are less than

4.3 mm in diameter, from being bent or broken.

(2) “POWER“ mode ... increased hammering force

⅜ This can be used to speedily and efficiently drill

holes when the drill bits which are being used are

greater than 4 mm in diameter.

⅜ This can be used to drill holes into wood or metal.

CAUTION:

Do not drill holes in wood with the “SAVE“ mode.

There is a likelihood that the motor will burn out

because it can easily lock up due to the low power.

LUBRICATION

Low viscosity grease is applied to this rotary hammer so

that it can be used for a long period without replacing the

grease. Please contact the nearest service center for

grease replacement when any grease is leaking form

loosened screw.

Further use of the rotary hammer despite the grease

shortage causes damage to reduce the service life.

CAUTION:

A specific grease (FG-6A) is used with this machine,

therefore, the normal performance of the machine may

be badly affected by use of different grease. Please be

sure to let one of our service centers to undertake

replacement of the grease.

MAINTENANCE AND INSPECTION

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. 25)

The motor employs carbon brushes which are

consumable parts. Since and excessively worn

carbon brush can result in motor trouble, replace

the carbon brush with new ones when it becomes

worn to or near the “wear limit”. In addition, always

keep carbon brushes clean and ensure that they

slide freely within the brush holders.

NOTE:

When replacing the carbon brush with a new one,

be sure to use the Hitachi Carbon Brush Code No.

328481.

5. Replacing carbon brushes

Take out the carbon brush by first removing the

brush cap and then hooking the protrusion of the

carbon brush with a slotted head screw driver, etc.,

as shown in Fig. 27.

When installing the carbon brush, choose the

direction so that the nail of the carbon brush agrees

with the contact portion outside the brush tube.

Then push it in with a finger as illustrated in Fig.

28. Lastly, install the brush cap.

CAUTION:

Be absolutely sure to insert the nail of the carbon

brush into the contact portion outside the brush

tube. (You can insert whichever one of the two

nails provided.)

Caution must be exercised since any error in this

operation can result in the deformed nail of the

carbon brush and may cause motor trouble at an

early stage.

6. Cleaning on the outside

When the power tool is stained, wipe with a soft

dry cloth or a cloth moistened with soapy water.

Do not use chloric solvents, gasoline or paint thinner,

as they melt plastics.

7. Storage

Store the power tool in a place in which the

temperature is less than 40°C and out of reach of

children.

8. Service parts list

CAUTION

Repair, modification and inspection of Hitachi Power

Tools must be carried out by a 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 may be changed without

prior notice.

GUARANTEE

We guarantee Hitachi Power Tools in accordance with

statutory/country specific 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.

NOTE:

Due to HITACHI’s continuing program of research and

development, the specifications herein are subject to

change without prior notice.

01Eng_DH14DL_WE 11/6/08, 20:2818

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