Tweco 190 MIG Thermal Arc Fabricator - Manual (Page 32)

FABRICATOR 190 WELDING MACHINE
INSTALLATION 3-10 Manual No. 0-4838
3.11 Inserting Wire into the Feedhead
and Welding Gun
!
WARNING
ELECTRIC SHOCK CAN KILL! Make certain the
machine is unplugged from the power
receptacle. Do not plug machine in until told
to do so in these instructions
Slide the wire spool onto the hub, loading it so that the
wire will feed off the spool as the spool rotates counter
clockwise.
Make sure the drive pin on the spool hub lines up with
the hole in the spool.
When the spool of wire is in place, replace the spool
retaining pin.
NOTE
The Hub tension has been pre-adjusted at the
factory. However is adjustment is required,
simply turn the spool nut counter clockwise
to reduce tension, and clockwise to increase
tension
CAUTION
Use care in handling the spooled wire as it
will tend to “unravel” when loosened from the
spool. Grasp the end of the wire firmly, and
don’t let go of it. Make sure the end of the
wire is free of any burrs and is straight.
1. Loosen Pressure Adjust Device knob (Fig. 3-8)
2. Open Pressure Adjust Device (Fig. 3-9)
3. Open Pressure Arm (Fig. 3-9)
4. Place end of wire into the Inlet Wire Guide, feeding
it over the Feedroll. Make certain the proper groove
is being used. (Fig. 3-10)
5. Pass the wire into the outlet guide then into the MIG
Gun. (Fig. 3-10)
6. Close the Pressure Arm. (Fig. 3-9)
7. Close the Pressure Adjust Device. Tighten the Pressure
Adjust Device knob to a “snug” condition. (Fig. 3-9)
8. Figure 3-10 shows the result with wire installed.
Spool
Pressure Adjust Device
Pressure Arm
Gun Cable End Feedroll Wire Guide Wire
Art # A-07569
Figure 3-8: Inner Workings of Device