Makita BTD042 Manual De Instrucciones página 6

Confirming the presetting
Switch off the tool and insert the battery cartridge. The indicating lamp will indicate the presetting number.
Green lamp shows the first digit. Red lamp shows the second digit.
Example: Presetting number is 12.
Green color lamp flashes once.
Relation between presetting number and action
Presetting
number
00
After impacting [number of impacts
(presetting number x 2) x 0.02] seconds
Green color lamp lights on.
01 – 99
Switch off before impacting [number of impacts (preset-
ting number x 2) x 0.02] seconds Red color lamp lights on. Then, the lamp will go out.
Indicating lamp
• After impacting preset numbers, the indicating lamp
lights in green color.
• The red color light will light on if the trigger is pulled
before the presetting number of impacts is achieved. It
indicates that the operation is incomplete.
Operation (Fig. 10, 11, 12 & 13)
[*1] Presetting number of impacts is impossible for more
than 200 impacts (4 seconds).
[*2] Fastening time includes when you pull the trigger
completely.
The proper fastening torque may differ depending upon
the kind or size of the screw/bolt, the material of the
workpiece to be fastened, etc. The relation between fas-
tening torque and fastening time is shown in Fig. 10 & 12
for standard bolt or Fig. 11 & 13 for high tensile bolt.
Hold the tool firmly and place the point of the driver bit in
the screw head. Apply forward pressure to the tool to the
extent that the bit will not slip off the screw and turn the
tool on to start operation.
NOTE:
• Hold the tool pointed straight at the screw.
• If you tighten the screw for a time longer than shown in
the figures, the screw or the point of the driver bit may
be overstressed, stripped, damaged, etc. Before start-
ing your job, always perform a test operation to deter-
mine the proper fastening time for your screw.
• If the tool is operated continuously, allow the tool to rest
for 15 minutes before proceeding with a fresh battery.
The fastening torque is affected by a wide variety of fac-
tors including the following. After fastening, always check
the torque with a torque wrench.
1. When the battery cartridge is discharged almost
completely, voltage will drop and the fastening
torque will be reduced.
2. Driver bit or socket bit
Failure to use the correct size driver bit or socket bit
will cause a reduction in the fastening torque.
3. Bolt
• Even though the torque coefficient and the class of
bolt are the same, the proper fastening torque will
differ according to the diameter of bolt.
• Even though the diameters of bolts are the same,
the proper fastening torque will differ according to
6
Red color lamp flashes two times.
Clockwise rotation
Auto-stop setting does not work.
The lamp goes out.
Auto-stop setting does not work.
Auto-stop setting does not work.
Indication lamp goes out.
the torque coefficient, the class of bolt and the bolt
length.
4. The manner of holding the tool or the material of
driving position to be fastened will affect the torque.
5. Operating the tool at low speed will cause a reduc-
tion in the fastening torque.
MAINTENANCE
CAUTION:
Always be sure that the tool is switched off and the bat-
tery cartridge is removed before carrying out any work on
the tool.
Replacement of carbon brushes (Fig. 14 & 15)
Replace carbon brushes when they are worn down to the
limit mark. Both identical carbon brushes should be
replaced at the same time.
To maintain product safety and reliability, repairs, mainte-
nance or adjustment should be carried out by a Makita
Authorized Service Center.
ACCESSORIES
CAUTION:
• These accessories or attachments are recommended
for use with your Makita tool specified in this manual.
The use of any other accessories or attachments might
present a risk of injury to persons. Only use accessory
or attachment for its stated purpose.
If you need any assistance for more details regarding
these accessories, ask your local Makita service center.
• Bit-piece
• Protector (clear, red, blue)
• Various type of Makita genuine batteries and chargers
• Automatic refreshing adapter
Counterclockwise rotation