Makita BTD120 Betriebsanleitung Seite 6

Cooling system
• This charger is equipped with cooling fan for heated
battery in order to enable the battery to prove its
own performance. Sound of cooling air comes out
during cooling, which means no trouble on the
charger.
• Yellow light will flash for warning in the following
cases.
– Trouble on cooling fan
– Incomplete cool down of battery, such as, being
clogged with dust
The battery can be charged in spite of the yellow
warning light. But the charging time will be longer
than usual in this case.
Check the sound of cooling fan, vent on the charger
and battery, which can be sometime clogged with
dust.
• The cooling system is in order although no sound of
cooling fan comes out, if the yellow warning light will
not flash.
• Always keep clean the vent on charger and battery
for cooling.
• The products should be sent to repair or mainte-
nance, if the yellow warning light will frequently
flash.
Conditioning charge
Conditioning charge can extend the life of battery by
automatically searching the optimum charging condi-
tion for the batteries in every situation.
The battery employed in the following conditions
repeatedly, will be worn out shortly, and yellow warn-
ing light may flash.
1. Recharge of battery with its high temperature
2. Recharge of battery with its low temperature
3. Recharge of full charged battery
4. Over-discharge of battery (continue to discharge
battery in spite of down of power.)
5. Recharge under broken cooling system
The charging time of such battery is longer than
usual.
Trickle charge (Maintenance charge)
If you leave the battery cartridge in the charger to
prevent spontaneous discharging after full charge,
the charger will switch into its ''trickle charge (main-
tenance charge)'' mode and keep the battery car-
tridge fresh and fully charged.
Tips for maintaining maximum battery life
1. Charge the battery cartridge before completely
discharged.
Always stop tool operation and charge the battery
cartridge when you notice less tool power.
2. Never recharge a fully charged battery cartridge.
Overcharging shortens the battery service life.
3. Charge the battery cartridge with room tempera-
ture at 10°C – 40°C (50°F – 104°F).
Let a hot battery cartridge cool down by inserting
it into the charger.
4. Charge the Nickel Metal Hydride battery cartridge
when you do not use it for more than six months.
6
Installing or removing bit (Fig. 3)
CAUTION:
Always be sure that the tool is switched off and the
battery cartridge is removed before installing or
removing the bit.
Use only the driver bit or socket bit shown in the figure
below.
Do not use any other driver bit or socket bit.
To install the bit, pull the sleeve in the direction of the
arrow and insert the bit into the sleeve as far as it will
go. Then release the sleeve to secure the bit.
To remove the bit, pull the sleeve in the direction of
the arrow and pull the bit out firmly.
NOTE:
If the bit is not inserted deep enough into the sleeve,
the sleeve will not return to its original position and the
bit will not be secured. In this case, try re-inserting the
bit according to the instructions above.
Switch action (Fig. 4)
CAUTION:
Before inserting the battery cartridge into the tool,
always check to see that the switch trigger actuates
properly and returns to the ''OFF'' position when
released.
To start the tool, simply pull the trigger. Tool speed is
increased by increasing pressure on the trigger.
Release the trigger to stop.
Reversing switch action (Fig. 5)
CAUTION:
• Always check the direction of rotation before opera-
tion.
• Use the reversing switch only after the tool comes to
a complete stop. Changing the direction of rotation
before the tool stops may damage the tool.
• When not operating the tool, always set the revers-
ing switch lever to the neutral position.
This tool has a reversing switch to change the direc-
tion of rotation. Depress the reversing switch lever
from the A side for clockwise rotation or from the B
side for counterclockwise rotation. When the revers-
ing switch lever is in the neutral position, the switch
trigger cannot be pulled.