Switching On / Off - Hilti SID 121-A Manual De Instrucciones

7.1.1.1 Fitting the screwdriving bit
1. Set the forward / reverse switch to the middle
position or remove the battery from the power
tool.
2. Pull the locking ring on the chuck forward and
hold it in this position.
3. Push the screwdriving bit into the chuck as far
as it will go and then release the locking ring.
7.1.1.2 Removing the screwdriving bit
1. Set the forward / reverse switch to the middle
position or remove the battery from the power
tool.
2. Pull the locking ring on the chuck forward and
hold it in this position.
3. Pull the screwdriving bit out of the chuck and
then release the locking ring.
7.1.2 Changing insert tools with the SIW 121-A
and SIW 144-A 4
NOTE
The power tool is equipped with a / " square drive
with locking pin.
7.1.2.1 Fitting the nut driver
1. Set the forward / reverse switch to the middle
position or remove the battery from the power
tool.
2. Align the hole in the side of the nut driver with
the locking pin in the chuck.
3. Push the nut driver onto the chuck until it en-
gages.
7.1.2.2 Removing the nut driver (hex. socket)
1. Set the forward / reverse switch to the middle
position or remove the battery from the power
tool.
2. Push in the locking pin in the chuck through the
hole in the side of the nut driver (hex. socket).
3. Pull the nut driver (hex. socket) away from the
chuck.
7.2 Setting forward or reverse rotation 5
NOTE
The forward / reverse switch is used to select the
direction of rotation of the drive spindle. An interlock
prevents switching while the motor is running. In the
middle position, the control switch is locked but the
screwdriver's LED working light can be switched on.
Push the forward / reverse switch to the right (as
Printed: 07.07.2013 | Doc-Nr: PUB / 5070692 / 000 / 00
seen in the working direction) for forward rotation.
Push the forward / reverse switch to the left (as seen
in the working direction) for reverse rotation.
NOTE
The power tool's working light is no substitute for
good general illumination of the working area.
7.3 Torque selection switch 6
The torque selection switch can be used to select one
of two torque settings (please refer to the "Technical
data" section).

7.4 Switching on / off

The speed of the power tool can be controlled
smoothly (increased from minimum to maximum)
by pressing the control switch gradually.
7.5 Screwdriving
7.5.1 Fitting the bit / bit holder
1. Set the forward / reverse switch to the middle
position or remove the battery from the power
tool.
2. Fit the appropriate insert tool in the chuck.
7.5.2 Screwdriving
WARNING
Ensure fastener and attachment will withstand the
level of torque generated by the tool. Excess-
ive torque may overstress, strip or damage the
fastener/attachment and possibly lead to personal
injury.
1. Set the forward / reverse switch to the desired
direction of rotation.
2. Set the torque selector switch to the desired
torque.
7.6 Reading the charge status LED display on
Li ion batteries 7
NOTE
The charge status cannot be indicated while the power
tool is in operation. Indication is given (LED 1 blinks)
only when the battery is fully discharged or when it is
too hot (temperature above 80°C).
The Li-ion battery features a charge status LED dis-
play. The charge status is indicated by the LEDs on the
battery during charging (please refer to the section
"Li-ion battery charge status"). When the battery is at
en
9