20
Cutting direction
Important: The connectors must be fitted, relative to the cutting direction, as shown in the illustration. The
diamond wire must be used to cut in one direction only (see arrows).
Preparations for the first cut
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Connectors are already fitted to new diamond wires.
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The diamond wire must be twisted before joining the connectors by inserting the pin. Twist the diamond wire,
approx. 1–1.5 turns per metre length of wire, in a counter-clockwise direction (to the left) as seen when look-
ing straight at the cut face of the end of the wire.
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The corners on the workpiece should be rounded off to a radius of approx. 10 cm (using a hammer and chis-
el or a Hilti combihammer) and/or the diamond wire pulled through by hand.
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Mount the water supply nozzle at the point where the wire enters the workpiece. Depending on the length of
the cut, it may be necessary to apply cooling water at several points. It is essential that the wire is cooled
perfectly if good cutting results are to be achieved.
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Use the advance movement to tighten the wire. Move away from the machine to a safe distance and start the
motor. Start the saw gently and then increase the running speed gradually until the optimum drive speed
(r.p.m.) and cutting speed is reached.
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The sawing operation must be monitored continuously.
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The wire saw must be stopped before making adjustments to the water supply nozzles.
General information
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Do not kink or bend the wire sharply.
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Do not join diamond wires of different diameters together.
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To ensure even wear of the beads, the diamond wire must be retwisted after each long cut, applying a dif-
ferent number of turns, before beginning the next cut.
9. Instructions for connecting Hilti DS-W 10.5 diamond wire
Printed: 08.07.2013 | Doc-Nr: PUB / 5069762 / 000 / 01
