Overload Protection; Overheat Protection; Overdischarge Protection; Alert Indicator - Makita DFR452 Instruction Manual

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 tool/battery is operated in a manner that
causes it to draw an abnormally high current, the tool
stops automatically. 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/battery cool
before turning the tool on again.

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.

Alert indicator

The indicator lamp on the push drive mode selector
raises an alert with flashing red lights when the tool
works in the following operating conditions.
► Fig.2: 1. Indicator lamp
Lamp status Causes
Fast flashing (approx.
Battery
one-third second
getting low
intervals)
Delayed flashing
(approx. a second Overheated
intervals)
NOTE: An over-discharge alert may appear depend-
ing on the battery status and operational conditions.
Only for battery cartridges with the indicator
► Fig.3: 1. Indicator lamps 2. Check button
Press the check button on the battery cartridge to indi-
cate the remaining battery capacity. The indicator lamps
light up for a few seconds.
Remedies
Charge the battery
at your earliest
opportunity.
Let the tool cool
down before turning
For model DFR452
it on again.
The tool provides 4 positive-lock screw length settings.
Slide the stopper base out and in while depressing the
levers on the top surface of the stopper base so the
number for desired screw length (indicated on the label)
appears in the reading window. See the following table
for details on the numbers allocated to your desired
screw lengths.
► Fig.4: 1. Stopper base 2. Levers 3. Label
10 ENGLISH
Indicating the remaining battery
capacity
Indicator lamps
Lighted Off
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.
Setting for desired screw lengths
4. Reading window
Numbers indicated on
the label
20
25
32
41
Remaining
capacity
Blinking
75% to 100%
50% to 75%
25% to 50%
0% to 25%
Charge the
battery.
The battery
may have
malfunctioned.
Screw length ranges
20 mm (3/4")
25 mm - 28 mm (1" - 1-1/8")
28 mm - 35 mm (1-1/8" - 1-3/8")
35 mm - 41 mm (1-3/8" - 1-5/8")