Hilti SI 100, Operating Instructions Manual

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1.2.4 Work area safety
a) Ensure that the workplace is well ventilated. Expo-
sure to dust at a poorly ventilated workplace may
result in damage to the health.
b) WARNING: Some dust created by grinding, sand-
ing, cutting and drilling contains chemicals known
to cause cancer, birth defects, infertility or other
reproductive harm; or serious and permanent res-
piratory or other injury.
Some examples of these
chemicals are: lead from lead-based paints, crys-
talline silica from bricks, concrete and other mason-
ry products and natural stone, arsenic and chromi-
um from chemically-treated lumber. Your risk from
these exposures varies, depending on how often
you do this type of work.
To reduce exposure to
these chemicals, the operator and bystanders
should work in a well-ventilated area, work with
approved safety equipment, such as respiratory
protection appropriate for the type of dust generat-
ed, and designed to filter out microscopic parti-
cles and direct dust away from the face and body.
Avoid prolonged contact with dust. Wear protec-
tive clothing and wash exposed areas with soap
and water.
Allowing dust to get into your mouth,
eyes, or to remain on your skin may promote
absorption of harmful chemicals.
1.2.5 Personal protective equipment
a) The user and any other persons in the vicinity
must wear ANSI Z87.1-approved eye protection, a
hard hat, ear protection, protective gloves and
breathing protection while the power tool is in
use.
Operating instructions
Selection of nut setter socket/bit holder/extension
Only use Hilti impact screwdriver nut setter socket
S-NSD.
Use nut setter sockets with the same widths across flats
as the screws being driven. Widths across flats not
matching each other falsify the torque and damage the
nut setter insert and the screw head.
Make sure that no foreign matter, such as small screws
or nails, are held by magnetic socket wrench inserts in
use when switching on the screwdriver.
Attachment of nut setter socket/bit holder/extension
  
Prior to attaching or removing the nut setter sock-
et/bit holder/extension, make sure the screwdriver is
switched off and its plug is pulled out of the electric sup-
ply socket (receptacle).
Remove the O-ring from the groove in the nut setter
socket/bit holder/extension and pull out the retaining
pin. Put the nut setter socket/bit holder/extension onto
the square drive pin of the screwdriver. Align the bores
in the square drive pin and nut setter/bit holder/exten-
sion to permit insertion of the retaining pin. Insert the
retaining pin and replace the O-ring to secure the nut
setter socket. Carry out these operations in the reverse
order for disassembly.
The retaining pin for the nut set-
ter socket/bit holder/extension must be fitted and
secured before using the screwdriver.
Trigger switch

Prior to plugging the screwdriver into an electric
supply, always check that the trigger switch works prop-
erly and returns to the OFF position when released.
When switching on the screwdriver, press the electron-
ic trigger switch. The r.p.m. increase with greater pres-
sure on the switch. To switch off, release the switch.
Speed and torque presetting wheel

The speed, and thus also the torque, can be preselect-
ed by turning this wheel. The maximum speed and torque
are set when the screwdriver is delivered.
Reversing switch

The direction of rotation can be changed with the revers-
ing switch. Press the right-hand side of the switch for
clockwise rotation (F) and the left-hand side for counter-
clockwise rotation (R).
– Always check the direction of rotation before starting
to work.
– Never change the direction of rotation while the motor
is running. If you do, the screwdriver can be damaged.
Hold the screwdriver firmly and place the nut setter sock-
et over the screw head or nut. Drive in the screw or tight-
en the nut, while judging the time required.
Note:
– Hold the screwdriver perpendicular to the screw fas-
tening. Don't apply excessive pressure.
– Avoid using too high a torque. This can damage the
screw / nut-and-bolt fastening.
After driving a screw / tightening a nut, check for cor-
rect tightening using a torque wrench and, if necessary,
retighten the fastening. The torque is influenced by var-
ious factors, such as:
1. Mains voltage
A drop in voltage / undervoltage reduces the preselect-
ed maximum torque / speed.
2. Nut setter socket
Incorrectly matched widths across flats of the nut set-
ter socket and screw head / nut reduce the torque.
A worn nut setter socket (damaged hexagon head or
square drive pin) reduces the torque.
Printed: 07.07.2013 | Doc-Nr: PUB / 5070690 / 000 / 00