Manual Makita DHR281 (page 14 of 156) (English, German, Dutch, Danish, French, Italian, Portuguese, Turkish, Spanish)

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14 ENGLISH

NOTE: Depending on the conditions of use and the

ambient temperature, the indication may differ slightly

from the actual capacity.

Tool / battery protection system

The tool is equipped with a tool/battery protection sys-

tem. This system automatically cuts off power to the

motor to extend tool and battery life. The tool will auto-

matically stop during operation if the tool or battery is

placed under one of the following conditions:

Overload protection

When the battery is operated in a manner that causes

it to draw an abnormally high current, the tool automat-

ically stops without any indication. In this situation, turn

the tool off and stop the application that caused the tool

to become overloaded. Then turn the tool on to restart.

Overheat protection

When the tool or battery is overheated, the tool stops

automatically. In this case, let the tool and battery cool

before turning the tool on again.

NOTE: When the tool is overheated, the lamp blinks.

Overdischarge protection

When the battery capacity is not enough, the tool stops

automatically. In this case, remove the battery from the

tool and charge the battery.

Switch action

WARNING: Before installing the battery car-

tridge into the tool, always check to see that the

switch trigger actuates properly and returns to

the "OFF" position when released.

► Fig.3: 1. Switch trigger

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

speed is increased by increasing pressure on the switch

trigger. Release the switch trigger to stop.

Speed change

The revolutions and blows per minute can be adjusted

by turning the adjusting dial. The dial is marked 1 (low-

est speed) to 5 (full speed).

► Fig.4: 1. Adjusting dial

Refer to the table below for the relationship between the

number on the adjusting dial and the revolutions and

blows per minute.

Number Revolutions per

minute

Blows per minute

5 980 5,000

4 810 4,130

3 640 3,260

2 470 2,400

1 300 1,550

CAUTION: Do not turn the adjusting dial when

the tool is running. Failure to do so may result in

the loss of control of the tool and cause an injury.

NOTICE: If the tool is operated continuously at

low speed for a long time, the motor will get over-

loaded, resulting in tool malfunction.

NOTICE:

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.

NOTE:

Soft no-load rotation function (For DHR282/DHR283)

When the speed adjusting dial is set to "3" or higher, the

tool automatically reduces the speed at no-load to reduce

the vibration under no-load. Once operation starts with a

bit against concrete, blows per minute increase and reach

the numbers as shown in the table. When temperature is

low and there is less uidity in grease, the tool may not

have this function even with the motor rotating.

This function is not available when the dust collection

system is installed.

Lighting up the front lamp

► Fig.5: 1. Lamp

CAUTION: Do not look in the light or see the

source of light directly.

Pull the switch trigger to light up the lamp. The lamp keeps on

lighting while the switch trigger is being pulled. The lamp goes

out approximately 10 seconds after releasing the switch trigger.

CAUTION: For DHR282/DHR283

If the lamp goes off after blinking for a few seconds,

the active feedback sensing technology or the soft

no-load rotation function is not working properly.

Ask your local Makita Service Center for repair.

NOTE: Use a dry cloth to wipe the dirt off the lens of

the lamp. Be careful not to scratch the lens of lamp, or

it may lower the illumination.

NOTE: If the dust collection system is installed on the

tool, the lamp of the dust collection system lights up

instead of the lamp of the tool.

Reversing switch action

► Fig.6: 1. Reversing switch lever

CAUTION: Always check the direction of

rotation before operation.

CAUTION:

Use the reversing switch only after

the tool comes to a complete stop. Changing the direc-

tion of rotation before the tool stops may damage the tool.

CAUTION:

When not operating the tool, always

set the reversing switch lever to the neutral position.

This tool has a reversing switch to change the direction of rota-

tion. Depress the reversing switch lever from the A side for clock-

wise rotation or from the B side for counterclockwise rotation.

When the reversing switch lever is in the neutral posi-

tion, the switch trigger cannot be pulled.

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Makita DHR281 Manual

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