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5. Safety instructions
conductor cross-section and are approved for the intend-
ed field of use. Do not work with extension cables when
they are rolled up. This can result in a drop in output
at the equipment and may cause the cable to overheat.
m)
Disconnect the power cable before beginning clean-
ing and maintenance work or in the event of a lengthy
interruption between periods of operation.
n)
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.
o) Before beginning work, check the working area
(e.g. using a metal detector) to ensure that no con-
cealed electric cables or gas and water pipes are pre-
sent
. External metal parts of the machine may become
live, for example, when an electric cable is damaged
accidentally. This presents a serious risk of electric
shock.
Requirements to be met by users
a)
The wire saw system may be operated only by spe-
cialists trained in concrete cutting techniques, referred
to in the following as “operators”. These persons must
be familiar with the content of these operating instruc-
tions and must have been trained in their safe applica-
tion by a Hilti specialist.
b)
Stay alert, watch what you are doing and use com-
mon sense when working. Do not use the equipment
when you are tired or under the influence of drugs, alco-
hol or medication. A moment of inattention while oper-
ating the equipment could result in serious injury.
c)
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.
d)
Dust from material such as paint containing lead,
some wood species, minerals and metal may be harm-
ful. Contact with or inhalation of the dust may cause
allergic reactions and/or respiratory diseases to the
operator or bystanders. Certain kinds of dust are clas-
sified as carcinogenic such as oak and beech dust espe-
cially in conjunction with additives for wood condi-
tioning (chromate, wood preservative). Material con-
taining asbestos may be worked on only by specialists.
Where the use of a dust extraction device is possi-
ble it shall be used. To achieve a high level of dust
5.5
collection, use a suitable vacuum cleaner of the type
recommended by Hilti for wood dust and/or mineral
dust together with this tool. Ensure that the work-
place is well ventilated. The use of a dust mask of
filter class P2 is recommended. Observe current
national regulations applicable to the materials to
be worked on.
Safety during operation
Check that the wire saw and its components, the saw-
ing wire and wire connectors and all accessories are
in good condition and perfect working order before
use. Any damage or malfunctions must be rectified in
a PROFESSIONAL manner before operation commences.
Position the control unit as far as possible outside the
danger zone and remain in the vicinity of the control
panel during cutting operations.
Sawing may begin only once the wire saw and pulley
stands have been securely fastened to a solid base
material. A falling component of the system may result
in serious damage or personal injury.
Connect the equipment to the electric power supply
only after the wire saw has been fully set up.
Begin saw operation only when the wire guards have
been fitted correctly and when the sawing wire has been
rigged through the hollow axles of pulleys positioned
directly at the wire entry and exit points.
Persons may enter the danger zone (e.g. to adjust pul-
leys or water supply nozzles) only after the drive has
been switched off and when the drive pulley has come
to a standstill. Switch off or disconnect the electric sup-
ply before entering the danger area.
Observe the permissible drive parameters and the rec-
ommended guide values for cutting speed and advance
pressure when sawing.
Use only sawing wires that comply with the require-
ments of EN 13236.
The risk of wire breakage can be reduced considerably by
using high-quality diamond wires and wire connectors
and the appropriate tool for crimping the connectors.
The wire may get hot – don’t touch it without gloves!
Use adequately dimensioned fastening materials (anchors,
screws etc.) to secure the pulley stands, the wire saw
and the parts of the structure that are to be cut free.
5.6
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Printed: 08.07.2013 | Doc-Nr: PUB / 5069736 / 000 / 01
Summary of Contents for DS WS10
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