Manuale Makita HR4003C Martello perforatore

Manuale

7

12. Do not point the tool at any one in the area when

operating. The bit could fly out and injure

someone seriously.

13. Do not touch the bit or parts close to the bit

immediately after operation; they may be

extremely hot and could burn your skin.

14. Some material contains chemicals which may be

toxic. Take caution to prevent dust inhalation

and skin contact. Follow material supplier safety

data.

SAVE THESE INSTRUCTIONS.

WARNING:

DO NOT let comfort or familiarity with product

(gained from repeated use) replace strict adherence

to safety rules for the subject product. MISUSE or

failure to follow the safety rules stated in this

instruction manual may cause serious personal

injury.

FUNCTIONAL DESCRIPTION

CAUTION:

• Always be sure that the tool is switched off and

unplugged before adjusting or checking function on the

tool.

Switch action

CAUTION:

• Before plugging in the tool, always check to see that

the switch trigger actuates properly and returns to the

“OFF” position when released.

Switch trigger (Fig. 1)

This switch functions when setting the tool in

symbol

and symbol modes.

To start the tool, simply pull the switch trigger. Release

the switch trigger to stop.

Switch button (Fig. 2)

This switch functions when setting the tool in symbol

mode.

When the tool is in the symbol mode, the switch

button projects out and lights in red.

To start the tool, press the switch button. The switch light

turns in green.

To stop the tool, press the switch button again.

Speed change (Fig. 3)

The revolutions and blows per minute can be adjusted

just by turning the adjusting dial. The dial is marked 1

(lowest speed) to 5 (full speed).

Refer to the table below for the relationship between the

number settings on the adjusting dial and the revolutions/

blows per minute.

For Model HR4003C, HR4013C

014134

For Model HR5202C, HR5212C

014872

For Model HR4013C, HR5212C only

NOTE:

• Blows at no load per minute becomes smaller than

those on load in order to reduce vibration under no

load, but this does not show trouble. Once operation

starts with a bit against concrete, blows per minute

increase and get to the numbers as shown in the table.

When temperature is low and there is less fluidity in

grease, the tool may not have this function even with

the motor rotating.

CAUTION:

• If the tool is operated continuously at low speeds for a

long time, the motor may get overloaded, resulting in

tool malfunction.

• The speed adjusting dial can be turned only as far as 5

and back to 1. Do not force it past 5 or 1, or the speed

adjusting function may no longer work.

Selecting the action mode

CAUTION:

• Do not rotate the change lever when the tool is running.

The tool will be damaged.

• To avoid rapid wear on the mode change mechanism,

be sure that the change lever is always positively

located in one of the action mode positions.

Hammer drilling mode (Fig. 4)

For drilling in concrete, masonry, etc., rotate the change

lever to the symbol. Use a tungsten-carbide tipped

bit.

Hammering mode (Switch trigger mode) (Fig. 5)

For chipping, scaling or demolition operations, rotate the

change lever to the symbol. Use a bull point, cold

chisel, scaling chisel, etc.

Hammering mode (Switch button mode)

For continuous chipping, scaling or demolition

operations, rotate the change lever to the symbol.

(Fig. 6)

The switch button projects out and lights in red.

Use a bull point, cold chisel, scaling chisel, etc. (Fig. 7)

NOTE:

• When using the tool in the symbol mode, the switch

trigger does not work but only the switch button works.

Torque limiter

The torque limiter actuates when torque reaches a

certain level. The motor disengages from the output

shaft. When this happens, the bit stops turning.

CAUTION:

• As soon as the torque limiter actuates, switch off the

tool immediately. This helps to prevent premature wear

of the tool.

Number on

adjusting dial

Revolutions per

minute

Blows per

minute

5 500 2,900

4 470 2,700

3 380 2,150

2 290 1,650

1 250 1,450

Number on

adjusting dial

Revolutions per

minute

Blows per

minute

5 310 2,250

4 290 2,100

3 230 1,700

2 180 1,300

1 150 1,100

Valutazione

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