Manuale Makita HR4003C Martello perforatore

Manuale

8

Indicator lamp (Fig. 8)

The green power-ON indicator lamp lights up when the

tool is plugged in. If the indicator lamp does not light up,

the mains cord or the controller may be defective.

When the indicator lamp lights up but the tool does not

start even the tool is switched on, the carbon brushes

may be worn out, or the controller, the motor or the ON/

OFF switch may be defective.

If above symptoms occur, stop using the tool immediately

and ask your local service center.

The red service indicator lamp lights up when the carbon

brushes are nearly worn out to indicate that the tool

needs servicing. After some period of use, the motor

automatically shuts off.

ASSEMBLY

CAUTION:

• Always be sure that the tool is switched off and

unplugged before carrying out any work on the tool.

Side handle

CAUTION:

• Use the side handle only when chipping, scaling or

demolishing. Do not use it when drilling in concrete,

masonry, etc. The tool cannot be held properly with this

side handle when drilling. (Fig. 9)

The side handle can be swung 360° on the vertical and

secured at any desired position. It also secures at eight

different positions back and forth on the horizontal. Just

loosen the clamp nut to swing the side handle to a

desired position. Then tighten the clamp nut securely.

(Fig. 10)

Side grip (Fig. 11)

CAUTION:

• Always use the side grip to ensure operating safety

when drilling in concrete, masonry, etc.

The side grip swings around to either side, allowing easy

handling of the tool in any position. Loosen the side grip

by turning it counterclockwise, swing it to the desired

position and then tighten it by turning clockwise.

Installing or removing the bit

Clean the bit shank and apply bit grease before installing

the bit. (Fig. 12)

Insert the bit into the tool. Turn the bit and push it in until

it engages.

If the bit cannot be pushed in, remove the bit. Pull the

release cover down a couple of times. Then insert the bit

again. Turn the bit and push it in until it engages.

After installing, always make sure that the bit is securely

held in place by trying to pull it out. (Fig. 13)

To remove the bit, pull the release cover down all the way

and pull the bit out. (Fig. 14)

Bit angle (when chipping, scaling or demolishing)

The bit can be secured at 24 different angles. To change

the bit angle, rotate the change lever so that the pointer

points to the symbol. Turn the bit to the desired angle.

(Fig. 15)

Rotate the change lever so that the pointer points to the

symbol. Then make sure that the bit is securely held in

place by turning it slightly. (Fig. 16)

Depth gauge

The depth gauge is convenient for drilling holes of

uniform depth.

Press and hold the lock button, and insert the depth

gauge into the hex hole. (Fig. 17)

Make sure the toothed side of the depth gauge faces the

marking. (Fig. 18)

Adjust the depth gauge by moving it back and forth while

pressing the lock button. After adjustment, release the

lock button to lock the depth gauge.

NOTE:

• The depth gauge cannot be used at the position where

the depth gauge strikes against the gear housing/motor

housing.

OPERATION

CAUTION:

• Make sure the work material is secured and not

unstable. Flown object may cause personal injury.

• Do not pull the tool out forcibly even the bit gets stuck.

Loss of control may cause injury.

Hammer drilling operation (Fig. 19)

Set the change lever to the symbol.

Position the bit at the desired location for the hole, then

pull the switch trigger.

Do not force the tool. Light pressure gives best results.

Keep the tool in position and prevent it from slipping

away from the hole.

Do not apply more pressure when the hole becomes

clogged with chips or particles. Instead, run the tool at an

idle, then remove the bit partially from the hole. By

repeating this several times, the hole will be cleaned out

and you can continue drilling operation.

CAUTION:

• There is a tremendous and sudden twisting force

exerted on the tool/bit at the time of hole break-

through, when the hole becomes clogged with chips

and particles, or when striking reinforcing rods

embedded in the concrete. Always use the side grip

(auxiliary handle) and firmly hold the tool by both side

grip and switch handle during operations, and maintain

good balance and safe footing. Failure to do so may

result in the loss of control of the tool and potentially

severe injury.

Blow-out bulb (optional accessory) (Fig. 20)

After drilling the hole, use the blow-out bulb to clean the

dust out of the hole.

Chipping/Scaling/Demolition (Fig. 21)

Set the change lever to the or symbol.

Hold the tool firmly with both hands. Turn the tool on and

apply slight pressure on the tool so that the tool does not

bounce around, uncontrolled. Pressing very hard on the

tool will not increase the efficiency.

MAINTENANCE

CAUTION:

• Always be sure that the tool is switched off and

unplugged before attempting to perform inspection or

maintenance.

• Never use gasoline, benzine, thinner, alcohol or the

like. Discoloration, deformation or cracks may result.

Valutazione

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