Hilti DS WS10, Руководство по эксплуатации

Страница: 60 / 68

10. Troubleshooting
The drive pulley / sawing wire doesn’t begin
to rotate
The wire passes over too many / too sharp corners
(< 90°) on the concrete
– Round off the corners by chiseling and pull the wire
through well by hand.
– Fit guide pulleys to make the angle at corners less
acute.
– Reduce the number of corners by changing the wire
guidance system.
The wire tension is too high
– Reduce tension by reducing pressure in the system.
The length of wire in contact / cutting length is too long
– Divide the cut up into several shorter lengths.
– Reduce the contact length by fitting additional guide
pulleys.
The wire is fitted the wrong way round (beads not fac-
ing in the specified direction)
– Check the running direction and change it if neces-
sary (narrow end of beads ahead).
A new wire sticks in an existing, narrower kerf
– Use a thinner wire.
The sawing wire is damaged
– Check the wire for kinks.
– Check if the connectors are fitted the right way round
and that they’re thinner than the wire.
– Check if the wire has always been used in the same
running direction.
The drive pulley slips / the wire is not driven
The diamond wire is too loose, i.e. wire tension is too
low
– Check that the saw advance control valve is in the
“Tension” position.
– Increase tension by increasing the pressure.
– Check whether the cylinder or carriage have reached
the end of their travel.
– Check that the carriage moves smoothly and easily
on the rail.
The drive pulley is badly worn
– Replace the drive pulley.
10.2
10.1
The wire jumps off the drive pulley or guide
pulley when starting
The return lock was not set and tightened
– Slide the return lock all the way toward the cylinder
and secure it in position.
Guide pulleys not aligned correctly
– Adjust the guide pulleys to bring them exactly into
alignment with each other.
Little or no sawing progress
The working hydraulic pressure (DS WS10) or elec-
tric current input (DS WS10-E) is too low
– Increase the pneumatic advance pressure.
– Cut in a tighter arc.
The cut or length of wire in contact is too long
– Reduce the length of wire in contact by using a release
pulley.
– Reduce the length of the cut / divide the cut into sev-
eral shorter lengths.
The carriage does not move freely on the guide rail
– Check that the carriage can move freely (smooth
movement at 1 bar pressure). Clean the guide sur-
faces, rack and rollers if necessary.
The beads on the sawing wire have become polished
or were not sharpened properly in advance
– Sharpen the beads on the wire.
– Fit a new wire.
The advance cylinder has reached the end of its stroke
or the carriage is at the end stop
– Reposition the end stop.
– Readjust the cylinder and fit the wire storage exten-
sion if necessary.
The diamond wire wears too quickly
Cutting speed is too low, i.e. wire drive speed (r.p.m.)
is too low
– Increase cutting speed by increasing wire drive speed.
10.3
10.4
10.5
60
Printed: 08.07.2013 | Doc-Nr: PUB / 5069736 / 000 / 01