Makita DRT52 Instruction Manual page 13

NOTE: Depending on the conditions of use and the
ambient temperature, the indication may differ slightly
from the actual capacity.
NOTE: The first (far left) indicator lamp will blink when
the battery protection system works.
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/battery is overheated, the tool stops
automatically. In this situation, let the tool cool down
before turning the tool on again.
NOTE: When the tool is overheated, the indication 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.
Protections against other causes
Protection system is also designed for other causes that could
damage the tool and allows the tool to stop automatically.
Take all the following steps to clear the causes, when the tool
has been brought to a temporary halt or stop in operation.
1. Turn the tool off, and then turn it on again to restart.
2. Charge the battery(ies) or replace it/them with
recharged battery(ies).
3. Let the tool and battery(ies) cool down.
If no improvement can be found by restoring protection
system, then contact your local Makita Service Center.
Switch action
To turn on the tool, press the lock/unlock button. The
tool turns into the standby mode. To start the tool, press
the start/stop button in the standby mode. To stop the
tool, press the start/stop button again. The tool turns
into the standby mode. To turn off the tool, press the
lock/unlock button in the standby mode.
► Fig.3: 1. Lock/unlock button 2. Start/stop button
3. Indication lamp
NOTE: If the tool is left for 10 seconds without any
operation in the standby mode, the tool automatically
turns off and the indication lamp goes off.
NOTE: You can also stop and turn off the tool by
pressing the lock/unlock button while the tool is
operating.
Electronic function
The tool is equipped with the electronic functions for
easy operation.
Indication lamp
The indication lamp lights up green when the tool is the
standby mode.
► Fig.4: 1. Indication lamp
NOTICE:
When the tool is overheated, the indica-
tion lamp blinks. Cool down the tool fully before
operating the tool again.
Soft start
The soft-start function minimizes start-up shock, and
makes the tool start smoothly.
Adjusting trimmer bit protrusion
To adjust the bit protrusion, loosen the thumb nut and
move the base up or down as desired by turning the
adjusting screw. After adjusting, tighten the thumb nut
firmly to secure the base.
► Fig.5: 1. Base 2. Scale 3. Bit protrusion 4. Thumb
nut 5. Adjusting screw
ASSEMBLY
CAUTION:
Always be sure that the tool is
switched off and the battery cartridge is removed
before carrying out any work on the tool.
Installing or removing trimmer bit
CAUTION:
Do not tighten the collet nut without
inserting a trimmer bit, or the collet cone may break.
CAUTION:
Use only the wrenches provided
with the tool.
Insert the trimmer bit all the way into the collet cone and
tighten the collet nut securely with the two wrenches.
To remove the bit, follow the installation procedure in
reverse.
► Fig.6: 1. Loosen 2. Tighten 3. Hold
Changing the collet cone
CAUTION:
Use the correct size collet cone for
the trimmer bit which you intended to use.
CAUTION:
Do not tighten the collet nut with-
out installing a trimmer bit, or the collet cone may
break.
1. Loosen the collet nut and remove.
2. Replace the installed collet cone with desired
collet cone.
3.
Reinstall collet nut.
► Fig.7: 1. Collet cone 2. Collet nut
13 ENGLISH