Hilti DS WS15, Руководство по эксплуатации

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7. Operating the equipment
ve OFF and the EMERGENCY STOP buttons. Stop the
flow of cooling water.
■
Remove the protective cover from the drive unit and
bring the travelling drive motor into the forward drive
position either manually or using the compressed air
control system.
■
Wind the slack wire onto the storage pulleys. The sec-
ond operator ensures that the wire is correctly positioned
on the pulleys. Re-adjust the hollow axle of the guide
pulleys at the tension side to bring it into alignment with
the wire entering the store and tighten the clamping
screw. Replace the protective cover.
■
Should the wire store offer insufficient capacity dur-
ing extreme applications, simply move the drive unit
back a distance of 1–2 metres and then re-secure it in
its new position.
■
Check the alignment of the guide pulleys and read-
just if necessary.
■
Reset the advance pressure to the recommended val-
ue in accordance with the table. Lock the compressed
air control knob again and switch on the cooling water
system.
■
Disengage the EMERGENCY STOP button and press
the drive ON button. Use the speed control knob to accel-
erate gently to the desired or optimum cutting speed.
The DS WS 15 then saws automatically.
■
Monitor the sawing operation. If the saw wire vibrates
excessively, check the alignment of the pivoting or guid-
ing pulleys. If necessary, adjust the wire speed and
advance pressure slightly.
■
Important: Press the EMERGENCY STOP button in
the event of a critical or dangerous, unforeseen situa-
tion developing while sawing, e.g. a wire jumping off a
guide pulley or a person entering the danger area unex-
pectedly. The drive unit then switches off.
■
Closely observe sawing progress and pay attention
to the guide pulleys. Switch off the machine and pivot
the guide pulleys through 180° in good time - before the
wire begins to cut into the hollow axle between the pul-
leys!
■
Adequate cooling water and round, gentle cutting arcs
are the decisive factors in achieving good cutting results
in terms of cutting speed, safety and wire life.
■
The drive unit must be switched off and the EMER-
GENCY STOP button pressed before readjusting the
water supply, swivelling the guide pulleys, winding
wire onto the storage pulleys and before cleaning parts.
■
When switching the drive unit off temporarily (e.g.
when adjusting the water supply etc.) do not alter the
previously set parameters such as drive speed and
advance pressure (compressed air set at 1.5 bar, for
example). These operating controls can remain at the
previous settings.
Ending the sawing operation
■
Towards the end of the cut, the arc followed by the
wire becomes increasingly flat, sawing efficiency drops
and the tension on the wire increases. If necessary, the
guide pulleys can then be mounted at the end of the pul-
ley stand, further away from the object being cut.
■
Prior to completing the cut and sawing right through,
ensure that the part of the object being cut (or being cut
free) is secured so that it cannot move or will move in
the desired direction. If necessary, use steel wedges to
secure the object temporarily.
■
Reduce the speed of the wire considerably during the
final cutting phase. In normal circumstances, the wire
will be caught by the guide pulleys, without jumping off.
Switch off the drive unit after the object has been sawn
through.
■
Set all operating controls on the control unit to the
OFF or NEUTRAL positions and press the EMERGENCY
STOP button. The main power switch may be left in the
ON position and the electric supply cable should remain
connected.
■
Immediately after completing the cut, wash down the
pulley stands and the guide pulleys mounted at the object
cut and on the drive unit by spraying the parts with water,
paying special attention to the guide pulleys and wire
storage section.
7.4