l)
Disconnect the power cable before beginning clean-
ing and maintenance work or in the event of a lengthy
interruption between periods of operation.
m)
Please note that certain components of the power
converter retain an extremely dangerous (potentially
fatal) high voltage for up to 10 minutes after discon-
nection from the electric supply.
Requirements to be met by users
a)
The machine shall be operated only by specialists
trained in concrete cutting techniques, referred to in
the following as “operators”. These persons must be
familiar with the content of these operating instructions
and must have been trained in their safe application by
a Hilti specialist.
b)
The user and any other persons in the vicinity must
wear suitable eye protection, a hard hat, ear protection,
protective gloves and safety footwear while the equip-
ment is in use.
Safety during operation
Check that the wall saw and its components, the saw
blade and all accessories are in good condition and in
perfect working order before use. Any damage or mal-
functions must be rectified in a PROFESSIONAL man-
ner before operation commences.
Position the electric power supply outside the danger
area.
Sawing may begin only once the wall saw system (rail
supports) have been fastened securely to a solid sur-
face and the other parts of the system have been assem-
bled or installed correctly (all bolts tightened, the saw
head positioned securely on the rail, locking levers clo-
sed, end stops fitted). A falling object could result in
serious personal injury or damage to property or equip-
ment.
NEVER stand in the direction of radial flight of a run-
ning saw blade. Always use the appropriate blade guard
(DS-BG for normal cutting, DS-BGF for flush cutting).
Always operate the machine from the closed side of
the blade guard, i.e. the protected side, when corner
cuts are made with the blade guard in the partly open
2.5
2.4
position. The operator must take additional precauti-
ons (fit a cover, plank of wood, boards etc.) where
necessary.
Never enter the danger area (e.g. to change the saw
blade, remove the blade guard side section, hammer
in wedges, etc.) before the blade drive is switched off
and the blade has come to a standstill. Press the Out-
put Stop switch before entering the danger area.
Do not touch rotating parts.
Observe the permissible drive unit parameters, blade
rotation speed and advance speed while sawing.
Use only saw blades which have been approved for the
use at a peripheral cutting speed of at least 63 m/sec.
Fit the blades the right way round (observe correct
direction of rotation).
Use of blades with laser-welded segments can reduce
the risk of segments breaking and flying off.
Check the blade mounting flange and blade for dama-
ge (e.g. cracks in the steel disc) and degrease the bla-
de mount each time before operating the wall saw.
Always put on gloves before touching the saw blade as
it can get hot.
Use only fastening materials of adequate size (anchors,
bolts, etc.) to fasten the rail supports.
Use only the accessories recommended in these ope-
rating instructions. Use of other accessories may result
in personal injury or damage.
If equipment such as scaffolding, platforms or ladders
is used, check that this equipment complies with regu-
lations, that it is undamaged and set up in accordance
with regulations.
The operator must take measures to ensure that no
persons enter or loiter in the danger area at any time
while the saw is in operation. This also applies to the
area not immediately visible to the operator, i.e. the
area behind or below the object in which the cut is being
made. If necessary, a large area must be cordoned off
or security personnel posted.
Stay alert at all times. Monitor the progress of the sawing
operation and keep an eye on the cooling water system
and the area surrounding the workplace. Do not ope-
rate the machine if your full attention is not on the job.
Specific safety rules and symbols
8
Printed: 08.07.2013 | Doc-Nr: PUB / 5069686 / 000 / 01
