Makita BTW121 Betriebsanleitung Seite 6

Conditioning charge
Conditioning charge can extend the life of battery by
automatically searching the optimum charging condition
for the batteries in every situation.
The battery employed in the following conditions repeat-
edly, will be worn out shortly, and yellow warning 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 (maintenance charge)"
mode and keep the battery cartridge fresh and fully
charged.
Tips for maintaining maximum battery life
1. Charge the battery cartridge before completely dis-
charged. 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 temperature
at 10°C – 40°C (50°F – 104°F). Let a hot battery car-
tridge 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.
Selecting correct socket
Always use the correct size socket for bolts and nuts. An
incorrect size socket will result in inaccurate and incon-
sistent fastening torque and/or damage to the bolt or nut.
Auto-stop setting for number of impacts (Fig. 7)
This tool has a convenient auto-stop mechanism that allows you to preset the desired number of impacts in terms of
the application. The tool then stops automatically after reaching the preset number of impacts.
1. To set the dial on the back of the tool, first slide out the battery cartridge by sliding the button on the side of the
cartridge.
2. Two dials can be seen on the battery holder side. Use a slotted screwdriver to set the dial to a desired 2-digit set-
ting.
3. You cannot set the auto-stop setting for fastening with more than 200 impacts (over 4 sec.)
Note:
Do not force the dial when turning. You might break it.
6
Installing or removing socket (Fig. 3 & 4)
CAUTION:
Always be sure that the tool is switched off and the bat-
tery cartridge is removed before installing or removing
the socket.
1. For socket without O-ring and pin
To install the socket, push it onto the anvil of the tool
until it locks into place.To remove the socket, simply
pull it off.
2. For socket with O-ring and pin
Move the O-ring out of the groove in the socket and
remove the pin from the socket. Fit the socket onto
the anvil of the tool so that the hole in the socket is
aligned with the hole in the anvil. Insert the pin
through the hole in the socket and anvil. Then return
the O-ring to the original position in the socket
groove to retain the pin. To remove the socket, follow
the installation procedures in reverse.
Switch action (Fig. 5)
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. 6)
CAUTION:
• Always check the direction of rotation before operation.
• 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 reversing
switch lever to the neutral position.
This tool has a reversing switch to change the direction of
rotation. Depress the reversing switch lever from the A
side for clockwise rotation or from the B side for counter-
clockwise rotation. When the reversing switch lever is in
the neutral position, the switch trigger cannot be pulled.