Manual Hitachi WH10DFL (page 8 of 52) (English, German, Dutch, French, Italian, Portuguese, Spanish)

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The pilot lamp goes off to indicate that the battery is

fully charged.

CAUTION

If the battery is heated due to direct sunlight, etc.,

just after operation, the charger pilot lamp may

not light. At that time cool the battery first, then

start charging.

⅜ Regarding recharging time

Table 1 shows the recharging time required according

to the type of battery.

NOTE: The recharging time may vary according to the

ambient temperature.

3. Disconnect the charger’s power cord from the

receptacle

4. Hold the charger firmly and pull out the battery

NOTE

Be sure to pull out the battery from the charger after

use, and then keep it.

How to make the batteries perform longer

(1) Recharge the batteries before they become completely

exhausted.

When you feel that the power of the tool becomes

weaker, stop using the tool and recharge its battery.

If you continue to use the tool and exhaust the electric

current, the battery may be damaged and its life will

become shorter.

(2) Avoid recharging at high temperatures.

A rechargeable battery will be hot immediately after

use. If such a battery is recharged immediately after

use, its internal chemical substance will deteriorate,

and the battery life will be shortened. Leave the battery

and recharge it after it has cooled for a while.

CAUTION:

⅜ When the battery charger has been continuously used,

the battery charger will be heated, thus constituting

the cause of the failures. Once the charging has been

completed, give 15 minutes rest until the next

charging.

⅜ If the battery charger does not work while the battery

is mounted correctly, it is probable that the battery or

charger is malfunctioning. Take it to your authorized

Service Center.

PRIOR TO OPERATION

1. Setting up and checking the work environment

Check if the work environment is suitable by the

above precautions.

HOW TO USE

1. Installing the bit

Always follow the following procedure to install driver

bit. (Fig. 4)

(1) Pull the guide sleeve forward.

(2) Insert the bit into the hexagonal hole in the socket.

(3) Release the guide sleeve and it returns to its original

position.

CAUTION:

If the guide sleeve does not return to its original

position, then the bit is not installed properly.

2. Removing the bit

Please do the opposite point on the method of

installing bit.

3. Confirm that the battery is mounted correctly

4. Check the rotational direction

The bit rotates clockwise (viewed from the rear side)

by pushing the R-side of the selector button.

The L-side of the selector button is pushed to turn the

bit counterclockwise (See Fig. 5) (The

and

marks are provided on the body).

5. Switch operation

⅜ When the trigger switch is depressed, the tool rotates.

When the trigger is released, the tool stops.

⅜ The rotational speed of the drill can be controlled by

varying the amount that the trigger switch is pulled.

Speed is low when the trigger switch is pulled slightly

and increases as the trigger switch is pulled more.

NOTE

⅜ A buzzing noise is produced when the motor is about

to rotate. This is only a noise, not a machine failure.

6. Using the light

Pull the trigger switch to light up the light. The light

keeps on lighting while the trigger switch is being

pulled. The light goes out after releasing the trigger

switch. (Fig. 6)

CAUTION:

Do not look directly into the light. Such actions could

result in eye injury.

7. Tightening and loosening screws

Install the bit that matches the screw, line up the bit in

the grooves of the head of the screw, then tighten it.

Push the impact driver just enough to keep the bit

fitting the head of the screw.

CAUTION

Applying the impact driver for too long tightens the

screw too much and can break it.

Tightening a screw with the impact driver at an angle

to that screw can damage the head of the screw and

the proper force will not be transmitted to the screw.

Tighten with this impact driver lined up straight with

the screw.

OPERATIONAL CAUTIONS

1. Resting the unit after continuous work

After use for continuous bolt-tightening work, rest

the unit for 15 minutes or so when replacing the

battery. The temperature of the motor, switch, etc.,

will rise if the work is started again immediately after

battery replacement, eventually resulting in burnout.

NOTE

Do not touch the metal parts, as it gets very hot

during continuous work.

2. Cautions on use of the speed control switch

This switch has a built-in, electronic circuit which

steplessly varies the rotation speed. Consequently,

when the switch trigger is pulled only slightly (low

speed rotation) and the motor is stopped while

continuously driving in screws, the components of the

electronic circuit parts may overheat and be damaged.

Table 1 Recharging time (approx. min.) at 20°C

Battery

voltage

(V)

Battery capacity (Ah)

1.5 Ah

10.8 V BCL1015 40 min.

01Eng_WH10DFL_WE 1/16/09, 11:027

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Hitachi WH10DFL Manual

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