Feed Roller Pressure Adjustment; Changing The Feed Roll - Thermal Arc 181i FABRICATOR Service Manual

FABRICATOR 181i

4.06 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.
Before changing the feed roller ensure that the mains supply to the power source is switched off.
The use of excessive pressure may cause rapid wear of the feed rollers, shafts and bearing.

4.07 Changing the Feed Roll

To change feed roll remove the feed roll retaining screw by turning in an anticlockwise 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 0.6/0.8mm diameter hard wires. Select
the roller required with the chosen wire size marking facing outward.
Operation
WARNING
CAUTION
GROOVE "A"
GROOVE "B" SIZE
Figure 4-10: Dual Groove Feed Roller
Feed Roll
Retaining Screw
Feed Roll
Figure 4-11: Changing the Feed Roll
4-10
GROOVE "B"
GROOVE "A" SIZE
A-09583
Art # A-09584_AC
OPERATION
Manual 0-5152