Manual Hitachi D10YB2 (page 7 of 30) (English, German, Dutch, French, Italian, Spanish)

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English

CAUTION

Check and make sure positively that the switch is

off before inserting the plug into the power outlet.

Otherwise, a sudden start of the tool definitely

results an accident.

2. Pressing force of drill

You can not get holes quickly even if pressing it

by strong force more than necessary.

It not only damages the tip of drill bits and decreases

the efficiency of operation, but also shortens the

life of the drill.

3. When drilling completely through the material

When the drill bit bores completely through the

material, careless handling often results in a broken

drill bit or damage to the drill body itself due to

the sudden movement of the drill. Always be alert

and ready to release pushing force and hold the

drill body securely with both hands when drilling

through the material.

4. Adjusting the drilling speed

D10YB is equipped with electric control circuit which

enables non-step speed control.

To adjust the speed, turn the dial shown in Fig. 5.

When the dial is set to “1”, the drilling speed is

minimum speed (500/min). When the dial is set to

“5”, the drilling speed is maximum speed (2300/

min). Adjust the drilling speed according to the

material.

NOTE

When the dial is set to “1”, there can be cases

where no rotation takes place due to a power

situation, etc. In this case, raise the dial slightly

before use.

MAINTENANCE AND INSPECTION

1. Inspecting the drill bits

Since use of an abraded drill bits will cause motor

malfunctioning and degraded efficiency, replace the

drill bits with a new one or resharpening 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. 7)

The motor employs carbon brushes which are

consumable parts. Since an excessively worn carbon

brush can result in motor trouble, replace the carbon

brushes with new ones which have the same carbon

brush No. shown in the figure when they become

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

keep carbon brushes clean and ensure that they

slide freely within the brush holders.

5. Replacing carbon brushes

Disassemble the brush caps with a slotted-head

screwdriver the carbon brushes can the be easily

removed.

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 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

EN60745 and declared in accordance with ISO 4871.

Measured A-weighted sound pressure level: 78 dB (A)

Uncertainty KpA: 3 dB (A).

Wear ear protection.

The typical weighted root mean square acceleration value

does not exceed 2.5 m/s

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Hitachi D10YB2 Manual

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