Tweco VS 212 PortaFeed - Manual (Page 31)

PORTAFEED VS 212
Manual No. 0-4994 3-5 INSTALLATION
3.07 Threading Wire Into Feedhead
Refer to Figure 3-6.
!
WARNING
ELECTRIC SHOCK CAN KILL! Make certain
the power source and wire feeder are
turned OFF. Do not turn the power ON until
told to do so in these instructions.
CAUTION
Use care when handling the spooled wire as
the wire tends to unravel when loosened
from the spool. Grasp the end of the wire
firmly, and don’t let it get away from you.
Make sure that the end of the wire is straight
and free of burrs.
1. Place end of the welding wire into the input wire
guide. Feed it through the guide and over the drive
roll groove closest to the feedhead casting.
2. Pass the wire through the output wire guide and
into the welding gun assembly.
3. Lock in position with the spring tension knob. To
adjust the amount of force the bearing feed roll exerts
on the welding wire, turn the spring tension knob
clockwise for increased force or counterclockwise
for decreased force.
NOTE
If the force applied to the wire is too great,
the welding wire will bird nest in the
feedhead and not feed properly.
4. Turn the welding machine and wire feeder ON, and
set the wire feed speed control to midrange (refer
to Figure 3-7). Remove contact tube from welding
gun. Refer to Gun Manual. Press the gun switch
or INCH switch until wire feeds out past the gun
nozzle. Place contact tube over the wire and screw
into place and tighten. Cut wire off at about 1/4
inch (6 mm) from the nozzle.
Figure 3-6: Wire Threaded Through Guides and Locked In Position
Wire Feed Speed Control
Figure 3-7: Wire Feed Speed Control
Pressure Adjustment
Device
Pressure Arm
Output Wire Guide Input Wire Guide Welding Wire
Art # A-07253