Bedienungsanleitung Hitachi FDV16VB (Seite 7 von 30) (Deutsch, Englisch, Holländisch, Französisch, Italienisch, Portugiesisch, Spanisch)

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⅜ When boring wood:

Use an ordinary woodworking drill bit. However,

when drilling 6.5mm or smaller holes, use a

metalworking drill bit.

7. Selecting the driver bit

Screw heads or bits will be damaged unless a bit

appropriate for the screw diameter is employed to

drive in the screws.

8. Confirm the direction of bit rotation (Fig.4)

(FDV16VB)

The bit rotates clockwise (viewed from the rear) by

pushing the R-side of the reverse switch.

The L-side of the switch is pushed to turn screws

counterclockwise (i.e. to loosen them.)

CAUTION

⅜ Never change the direction of bit rotation during

operation.

Turn the power switch OFF before changing the

direction of bit rotation; otherwise, the motor will

burn.

⅜ Always use with clockwise rotation, when using it

as an impact drill.

9. IMPACT to ROTATION changeover (Fig.5)

The impact drill can be switched from IMPACT

(impact plus rotation) to ROTATION (rotation only)

by simply sliding the change lever. When boring

concrete, stone, tile or similar board materials, slide

the change lever right. The drill head impacts against

the material while continuing to rotate.

When boring metal, wood or plastic, slide the change

lever fully to the left. The drill simply rotates as

an ordinary electric drill.

CAUTION

Do not use the impact drill in the IMPACT mode

if the material can be bored by rotation only. Such

action will not only reduce drill efficiency, but may

also damage the drill tip.

When changing over, ensure the change lever is

slid as far as it will go.

HOW TO USE

1. Pressure

Drilling will NOT be accelerated by placing heavy

pressure on the drill. Such action will only result

in a damaged drill bit, decreased drilling efficiency

and/or shortened service life of the drill.

2. Using a large diameter drill bit

The larger the drill bit diameter, the larger the

reactive force on your arm. Be careful not to lose

control of the drill because of this reactive force.

To maintain firm control, establish a good foothold,

hold the drill tightly with both hands, and ensure

that the drill is vertical to the material being drilled.

3. When drilling completely through the material

When the drill bit bores completely through the

material, careless handling often results in a bro-

ken, 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 when drilling

through the material.

4. Speed adjustment and switch operation

⅜ FDV16VB

The drill speed can be adjusted from 0 through

maximum speed by regulating the trigger squeez-

ing force.

The more the trigger is squeezed, the faster the drill

rotates. When the trigger is squeezed fully, the

speed becomes maximum speed. Turn the adjust-

ing knob clockwise for higher speed and counter-

clockwise for lower speed. (Rotate the adjusting

knob approximately 2-2/3 turns.) (Fig.6)

⅜ FDV16T

To change speed, slide the shift knob in the

appropriate direction, as indicated by the arrow in

Fig.7.

The mark “H” printed on the shift knob denotes

High speed. The mark “L” denotes Low speed.

When the shift knob is in High speed position, the

rotation speed of the drill bit can be changed in

two stages (High speed/Low speed) according to

the method of pressing the switch trigger.

⅜ FDV16

The maximum speed can be obtained by pulling

the trigger switch.

⅜ Pull the trigger switch and push the stopper, this

keeps the switched in the on position, which is

convenient for continuous running. The stopper can

be released by pulling the trigger again.

CAUTION

Drill at a maximum rotation speed when drilling

wooden materials.

5. When driving wood screws (FDV16VB)

(1) Selecting a suitable driver bit

Employ plus-head screws, if possible, since the

driver bit easily slips off the heads of minus-head

screws.

(2) Driving in wood screws

⅜ Prior to driving in wood screws, make holes suit-

able for them on the wooden board. Apply the bit

to the screw head grooves and gently drive the

screws into the holes.

⅜ After rotating the screwdriver at low speed for a

while until a wood screw is partly driven into the

wood, squeeze the trigger more strongly to obtain

optimum driving force.

CAUTION

⅜ Exercise care in preparing a hole suitable for the

wood screws taking the hardness of the wood into

consideration.

Should the hole be excessively small or shallow,

requiring much power to drive the screw into it,

the thread of the wood screw may sometimes be

damaged.

⅜ Do not drive machine screws.

MAINTENANCE AND INSPECTION

1. Inspection the drill bit

Continued use of a worn and/or damaged drill bit

will result in reduced drilling efficiency and may

seriously overload the drill motor. Inspect the drill

bit often and replace it with a new bit as necessary.

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. Fail-

ure to do so could result in serious hazard.

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