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51
9. Troubleshooting
■
Irregular, one-sided wear of the diamond wire
Possible cause
Solution / measures
The diamond wire was not twisted before connecting the
– Twist the diamond wire approx. 1-1.5 turns to the left,
ends together.
as seen when looking at the cut face of the wire.
– The wire must be re-twisted after each large cut,
applying a different number of turns for each cut (more
turns or fewer turns, alternately).
■
Wire breakage directly after the connector
Possible cause
Solution / measures
Cutting radius of the diamond wire in the concrete is too tight. – Mount additional return pulleys.
Wire connector is too long.
– Fit shorter wire connector.
– Use the quick-release connectors recommended by
Hilti instead of rigid connectors.
■
The diamond wire pulls out of the crimped connector
Possible cause
Solution / measures
Incorrectly adjusted crimping pliers
– Check how the crimping pliers are set.
Insufficient pressure applied to the crimping pliers
– Minimum crimping pressure is
7 t
(Hilti crimping
pliers = 8 t)
Incorrect or worn crimping jaws
– Check the crimping jaws and replace if necessary.
The wire was not pushed far enough into the connector.
– The wire must always be pushed into the connector as
far as it will go. The end of the wire must be cut cleanly
and in accordance with instructions.
■
The diamond wire jumps about and vibrates very strongly
Possible cause
Solution / measures
Insufficient tension on the wire
– Increase the wire tension by adjusting the air pressure
regulation.
Guide pulleys are too far apart (free length of wire is too long). – Mount additional pulley stands.
– Fit a shorter diamond wire.
– Position the drive unit closer to the object being cut.
■
The diamond wire vibrates very strongly at a high frequency
Possible cause
Solution / measures
Tension on the wire is too high.
– Reduce the tension on the wire by adjusting the air
pressure regulation.
The saw is running at the wrong speed.
– Set the correct speed.
Содержание DS WS15
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