Tweco 251 Thermal Arc Fabricator - Manual (Page 33)

FABRICATOR 251
Manual No. 0-4847 3-11 INSTALLATION
3.12 Inserting Wire into the Feedhead
WARNING
ELECTRIC SHOCK CAN KILL! Make certain the input power is disconnected from the power supply before
proceeding. Do not reattach the input power until told to do so in these instructions.
1. Loosen the Spring Pressure Adjusting Knob if needed and swing it down (First part of Figure. 3-10)
2. Move the Pressure (top) Roller Arm by swinging it to the right. (Second part of Figure. 3-10)
3. Make sure the end of the wire is free of any burrs and is straight. Pass the end of wire through the Inlet Wire
Guide and over the Feedroll. Make certain the proper groove is being used. (Second part of Figure. 3-10)
4. Pass the wire through the outlet guide and into the Gun liner of the Gun Cable. (Second part of Figure. 3-10)
5. Close the Pressure Roller Arm. (Figure. 3-11)
6. Swing the Spring Pressure Adjusting Knob back into place. (Figure. 3-11)
7. Use the Spring Pressure Adjusting Knob to create a “snug” condition. (Clockwise to tighten and Counter
Clockwise to loosen). (Figure. 3-11)
8. Figure 3-12 shows the result with wire installed. Continue to the next section for proper setting of tension.
2 - Swing
Pressure arm
open
1 - Loosen
Adjuster and
swing down
3 - Feed wire
through here
4 - Feed wire
through here
Art # A-07143
Figure 3-10: Opening Pressure Arm and Inserting Wire
6 - Swing the
Adjuster back into
place.
7 - Adjust
the tension
Art # A-07144
5 - Swing
the Pressure
Arm closed
Figure 3-11: Closing Pressure Arm and Adjusting Tension