Operation Instructions - Surtek AR412 Manual De Usuario

TO REMOVE
To remove the bit or accessory, turn the keyless
chuck counter-clockwise direction to loosen
the collet, and then get the bit out.
FORWARD/REVERSE CONTROL
The forward/reverse control determines the di-
rection of rotation of the tool.
To select forward rota-
tion, release the trigger
switch and push the for-
ward/reverse control to
the right side of the tool.
To select reverse, push
the forward/reverse con-
trol to the left side of
the tool.
The center position of the control locks the
trigger in the off position
WARNING: When changing the position of
the control, make sure the trigger is released
and the motor is stationary.
TORQUE ADJUSTMENT
COLLAR
Your drill is fitted with
a variable clutch, which
is operated with the
torque adjustment ring.
Once adjusted, the clutch
will work at a predeter-
mined torque; this avoids screwing too deeply
or damaging your drill. Torque adjustment var-
ies with the types of screw used and the work-
ing material. Always start using a low torque
and increase gradually to achieve suitable op-
eration.Select the desired operating torque by
turning the torque adjusting ring to the appro-
priate setting.
FUNCTION SELECTOR;
DRILL / SCREWDRIVER
Two working modes are available on this tool:
drilling and screwdriving.
To select any of the modes, rotate the function
collar to the symbol until it aligns with the in-
dicator on the housing.
" indicates the DRILL POSI-
This symbol "
TION. Use this mode for high speed drilling
(soft materials). The clutch will be locked.
To work in the SCREWDRIVER mode simply se-
lect a torque number.
14

OPERATION INSTRUCTIONS

SWITCHING ON AND OFF
Hold the tool firmly to control the twisting of
the tool.
To prolong the life of the tool never overload
it. Start the tool by squeezing the variable
speed trigger switch. Release the trigger to
stop the tool.
This tool has a variable speed switch that de-
livers higher speed and torque with increased
trigger pressure. Speed is controlled by the
amount of switch trigger depression.
The variable speed feature is particularly use-
ful when driving screws. It also enables you to
select the best speed for a particular applica-
tion.
NOTE: It is recommended to use the variable
speed feature for a short time only. Do not
continuously operate the tool at different
speeds. It may damage the switch.
SCREW DRIVING
NOTE: Try to use the modern design of screws
for easy driving and improved grip.
· Install the correct driver bit.
• Ensure that the torque adjustment collar is
set to the most suitable setting. Push the dual
range gear selector to the position "Lo" to
choose low speed. If in doubt start with a low
setting and gradually increase the setting until
the most suitable position is found.
• Use the correct speed for the job, apply mini-
mal pressure to the trigger initially.
Only increase the speed when full control can
be maintained.
• It is advisable to drill a pilot hole first, slightly
longer and just smaller than the shank diame-
ter of the screw to be fitted. The pilot hole will
act as a guide for the screw and will also make
tightening of the screw less difficult.
• When screws are positioned close to an edge
of the material, a pilot hole will also help to
prevent splitting of the wood.
• Use the correct countersinking bit to ac-
commodate the screw head so that it is not
"proud" of the surface.
If the screw becomes difficult to drive home,
remove and try a slightly larger or longer hole
but remember there must be enough material