22
5. Safety precautions
Safety measures at the working area
■
Safety measures must be implemented in the area where
sawing is taking place so that operators and third parties
cannot be injured or property damaged by debris or objects
which may fly off during the sawing operation (small
stones, pieces of wire, sawing slurry, etc.). Safety mea-
sures must also be implemented in the area not directly
visible to the operator, behind where sawing is taking place.
■
Persons must NEVER enter the hazardous area while
sawing is in progress. The hazardous area extends to at
least twice the radius of the length of wire that would be
unleashed in the event of the wire breaking and also
includes the area in the extended axis of the wire tension
side. The operator is responsible for cordoning off the
area and restricting access. The hazardous area may be
entered only when the EMERGENCY STOP button is in
the pressed-in position.
■
Always keep the free wire lengths between the drive
unit and object being cut as short as possible. NEVER
operate the equipment without mounting the wire guides
on the construction component to be sawn or, respec-
tively, at the saw kerf. In the event of wire breakage, the
wire is automatically retained in the hollow axle of the
guide pulley, thus reducing the danger of wire whiplash.
Long, free wire lengths can lead to dangerous wire
whiplash in the event of wire breakage.
Preparations
■
Sawing work influences the statics of the structure.
DSW-WG
l2
l1
r1 = l1 x 2
r2 = l2 x 2
5.2
5.1
Approval must be obtained from the site engineer or
architect prior to carrying out drilling and sawing work.
■
Make sure that no gas, water, electricity or other sup-
ply lines are located in the cutting area. Supply lines locat-
ed close to the cutting area which could be damaged by
falling parts, for instance, must be specially protected
and, if necessary, temporarily switched off etc.
■
Ensure that the cooling water used is drained or extract-
ed in a suitably controlled manner. Water that is allowed
to drain away or spray around in an uncontrolled man-
ner can lead to damage or accidents. The fact that water
could drain away into internal, hidden cavities, e.g. in
brickwork or masonry, must also be taken into account.
■
Make a careful note of any influence the immediate
surroundings may have on operations. Do not use the
wire saw in areas where there is a risk of explosion or in
close proximity to combustible materials, fluids or gas-
es. Flying sparks or electrostatic discharge can lead to
fires or explosions.
■
Do not cut materials in which the cutting process may
produce toxic or explosive dust or vapours.
■
Do not cut easily combustible aluminium or magne-
sium alloys.
Securing the objects being cut and disposal of
sawing slurry
■
Steel wedges and/or supports must be used to pre-
vent uncontrolled movement of parts that are being cut
free in order to avoid injuries and to prevent the diamond
wire becoming trapped or jammed.
■
Make sure that sections of the structure that are cut
free (concrete blocks etc.) do not endanger the working
area and the operating personnel. The part of the struc-
ture to be cut free, e.g. a concrete block that is to be sawn
from a ceiling, must be supported to prevent it falling.
■
Use only approved and appropriately dimensioned
means of securing and lifting for the removal and trans-
portation of parts that have been cut free. Such parts
may have a weight of many tons.
■
Never loiter in the vicinity of loads suspended by cranes.
■
The area of the cut or the opening created by the cut-
5.3
Summary of Contents for DS WS15
Page 1: ...Operating instructions en DS WS15...
Page 26: ...26...
Page 38: ...38...
Page 42: ...42...
Page 48: ...48 8 Care and maintenance Pneumatic circuit diagram drive unit 8 7 Pneumatic circuit diagram...
Page 59: ...59...