Thermal Arc FABRICATOR 181i, Operating Manual

Page: 48 / 100

Fabricator 181i
INSTALLATION, OPERATION AND SETUP 3-18 Manual 0-5191
3.15 Feed Roller Pressure Adjustment
The pressure (top) roller applies pressure to the grooved feed roller via an adjustable pressure screw. These
devices should be adjusted to a minimum pressure that will provide satisfactory WIREFEED without slippage. If
slipping occurs, and inspection of the wire contact tip reveals no wear, distortion or burn back jam, the conduit
liner should be checked for kinks and clogging by metal flakes and swarf. If it is not the cause of slipping, the feed
roll pressure can be increased by rotating the pressure screw clockwise.
WARNING
Before changing the feed roller ensure that the Electricity Supply to the Power Source is switched off.
CAUTION
The use of excessive pressure may cause rapid wear of the feed rollers, shafts and bearing.
3.16 Changing the Feed Roll
To change feed roll remove the feed roll retaining screw by turning in an counterclockwise direction. Once the feed
roll is removed then to replace feed roll simply reverse these directions.
A dual groove feed roller is supplied as standard. It can accommodate 023"(0.6mm) -.030" (0.8mm) diameter hard
wires. Select the roller required with the chosen wire size marking facing outward.
GROOVE “B” GROOVE “A”
GROOVE “A” SIZE GROOVE “B” SIZE
A-09583
Figure 3-13: Dual Groove Feed Roller
Feed Roll
Retaining Screw
Feed Roll
Art # A-09584_AC
Figure 3-14: Changing the Feed Roll