Loading Wire; Assembly Of Drive Rolls - JAVAC NBM-500L Manual

Loading wire

• Open the side panel and fit the reel on the support so that
the wire unrolls clockwise, and center the projecting ref-
erence on the support with the relative hold on the reel.
• Thread the end of the wire into the back guide (Pos. 1,
Figure 4) on the drawing mechanism.
• Lift up the idle rolls (Pos. 8, Figure 4) releasing the roll
pressure device (Pos. 5, Figure 4). Make sure that the
drive rolls (Pos. 3, Figure 4) have the diameter corre-
sponding to the wire being used stamped on the outside.
• Thread the wire into the central wire guide (Pos. 9, Figure
4) and into the wire guide of the centralized attachment
(Pos. 4,Figure 4) for a few centimetres. Lower the idle
roll-holder arm making sure the wire goes into the slot of
the drive roll. If necessary, adjust the pressure between
the rolls with the screw provided (Pos. 5, Figure 4). The
correct pressure is the minimum that does not allow the
rolls to skid on the wire. Excessive pressure will case de-
formation of the wire and tangling on the entrance of the
sheath; insufficient pressure can cause irregular welding.

Assembly of drive rolls

Unscrew the two screws (Pos. 6, Figure 4) and lower the
safety guard of the gearing (Pos. 7, Figure 4). Lift up the idle
rollholder arm (Pos. 2, Figure 4) and proceed as follows:
• Each roll shows the type of wire and diameter on the two
external sides.
• Install the right rolls (Pos. 3, Figure 4) making sure the
groove is in the correct position for the diameter of the wire
being used.
• Close up the gearing safety guard again.
Figure 4
Figure 5