Fronius WF 25i Case D200, Operating Instructions Manual

Page: 31 / 68

No. Function
(5) Wire threading button
to thread the wire electrode into the torch hosepack with no accompanying flow
of gas or current
There are two wire threading variants available:
Variant 1
threading the wire electrode using the preset feeder inching speed:
-
Press and hold the wire threading button.
- The wire electrode will be threaded 1 mm (0.039 in.) after the wire
threading button is pressed.
- After a short pause, the wire-feed unit continues to thread the wire elec-
trode. If the wire threading button remains pressed, the speed will
increase every second at a rate of 10 m/min (393.70 ipm) until the preset
feeder inching speed is reached.
- If the wire electrode comes into contact with a ground earth connection,
the wire feeding will be stopped and the wire electrode will be retracted
again by 1 mm (0.039 in.).
Variant 2
threading the wire electrode in 1 mm stages (0.039 in. stages) - always press
the wire threading button for less than one second (tap):
-
If the wire electrode comes into contact with a ground earth connection,
the wire feeding will be stopped and the wire electrode will be retracted
again by 1 mm (0.039 in.).
NOTE!
If there is a ground earth connection with the contact tip before the wire threading
button is pressed, the wire electrode will be retracted when the button is pressed.
The wire electrode is only retracted until the short circuit no longer exists, however by
more than 10 mm (0.39 in.) with each press of the button.
If there is still a ground earth connection with the contact tip after 10 mm (0.39 in.) of wire
retraction, pressing the wire threading button again will cause the wire electrode to be
retracted again by a maximum of 10 mm (0.39 in.). The process will be repeated until
there is no longer a ground earth connection with the contact tip.
31
EN