50
9. Troubleshooting
Problems or faults concerning the diamond wire
■ The DS WS 15 cannot start movement of the wire
Possible cause Solution / measures
Edges of the concrete are too sharp. – Use a Hilti combihammer to round the edges and pull
the diamond wire back and forward by hand before
starting.
A new diamond wire sticks in the kerf cut by a worn wire. – Complete the cut with the worn wire.
– Mount additional return pulleys or release pulleys.
The length of contact between the diamond wire and the – Drill a hole through which the new wire can be threaded.
concrete is excessive.
Tension on the diamond wire is too high. – Reduce wire tension by adjusting the air pressure regu-
lation valve.
■ The diamond wire slips on the drive wheels
Possible cause Solution / measures
Insufficient tension on the diamond wire – Increase the tension by adjusting the air pressure regu-
lation valve.
The rubber tyre on the drive wheel is worn excessively. – Replace the drive wheel.
■ The wire jumps off the drive wheels when starting
Possible cause Solution / measure
The starting lock was not used. – Use the starting lock
(position and lock the
clamping piece against
the air cylinder).
9.1
Persons may enter the danger zone only when the drive
unit is switched off and the drive pulley has stopped rota-
ting. Press the EMERGENCY STOP button before ente-
ring the danger zone.
Disconnect the equipment from the electric supply (unplug
the supply cord from the power outlet) before opening
the control unit.
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