28
Solution / measures
– Use a
Hilti
combihammer to break
away sharp corners and ensure
that the diamond wire can be
moved to and fro initially by hand.
– Use the worn wire to finish the
cut.
– Drill an additional hole where
the new wire can be pulled
through.
– Additional guide pulleys must be
installed.
– Reduce wire tension by adjusting
the saw head advance (observe
the tensioning arm).
– Increase wire tension by adjusting
the saw head advance.
(Observe the tensioning arm.)
– Adjust the guide pulleys to increa se
the length of contact between the
wire and drive wheel perimeter.
– Additional guide pulleys must be
installed.
– Replace the drive wheel.
– Twist the wire in a counter-clock-
wise direction (as seen when look-
ing straight at the cut end of the
wire) approx. 1–1.5 turns for each
metre length of wire.
– The wire must be retwisted after
each large cut by applying a differ-
ent number of turns.
Problem
1
. The diamond wire does not run.
2.
The diamond wire slips on the
drive wheel.
3.
The diamond wire is badly worn,
irregularly and on one side.
Possible cause
– Corners on concrete too sharp
– A new diamond wire is being used
in a cut made by a worn diamond
wire.
– The section of diamond wire in con -
tact with the concrete is too long.
– Excessive tension on the diamond
wire
– Insufficient tension on the diamond
wire
– Insufficient length of contact bet -
ween the wire and drive wheel
perimeter.
– The section of wire in contact with
the concrete is too long.
– The rubber rim on the drive wheel
is too badly worn.
– Diamond wire not twisted before
coupling the ends together
Persons may enter the danger zone only when the
drive unit is switched off and the drive pulley has stop-
ped rotating. Press the EMERGENCY STOP button
before entering the danger zone.
Disconnect the equipment from the electric supply
(unplug the supply cord from the power outlet) before
opening the control unit.
12. Troubleshooting
Printed: 08.07.2013 | Doc-Nr: PUB / 5069762 / 000 / 01
