Tweco 251 Thermal Arc Fabricator - Manual (Page 29)

FABRICATOR 251
Manual No. 0-4847 3-7 INSTALLATION
3.08 Attaching the Gun and Cable
Assembly to the Power Source
The Fabricator 251 is supplied with a Tweco Weldskill 300 AMP air-cooled gun. The Weldskill gun is designed with an
ergonomic handle and fewer parts to cause performance problems. The Weldskill gun uses standard readily available
Tweco Weldskill consumable parts.
1. Open the door panel to the machine by inserting your left and right index fingers into the two release mecha-
nisms marked with hand arrows in Figure 3-4. Slide them toward each other and pull the cover outward and
up to open.
Art # A-07142_AB
Set up Ch
art
Figure 3-4: Door Panel Opening
NOTE
Lubricate the O-ring on the quick-connect fitting of the gun cable with grease (Dow company #4 com-
pound or equivalent, or Thermal Arc #903910)
2. Route the gun cable through the access hole in the front panel. Refer to Figures 3-5 and -3-6.
3. Loosen the thumbscrew and insert the gun cable end as far as it will go. Tighten thumbscrew. Refer to Figure
3-6.
4. Align the keyways of the Gun Switch connector with the receptacle below the gun cable and plug them to-
gether. Secure by turning the locking ring to the right (clockwise ). Refer to Figure 3-6.
NOTE
When disconnecting gun switch leads from the machine, loosen the locking ring and grab the connectors
and pull. Do not pull on the wires.
5. To remove the gun, reverse these directions.