Castolin Eutectic ArcWeld 420i, Техническое руководство

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5.3 Wire feed pressure
Start by making sure that the wire moves smoothly through the wire guide. Then set the
pressure of the wire feeder's pressure rollers. It is important that the pressure is not too
great.
To check that the feed pressure is set correctly, you can feed out the wire against an
insulated object, e.g. a piece of wood.
When you hold the gun approx. 5 mm from the piece of wood (Fig. 1) the feed rollers
should slip.
If you hold the gun approx. 50 mm from the piece of wood, the wire should be fed out
and bend (Fig. 2)
5.4 Wire inching
Wire inching is used to feed wire without welding voltage and gas flow. The wire is fed as long
as the button is depressed. Wire inching speed can be adjusted by the speed setting knob
CAUTION!
Before pressing the inching button make sure, the speed is set to the required
value.