Feed Roller Pressure Adjustment; Changing The Feed Roll - Firepower MST 180i Operating Manual

3.16 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 Electricity Supply to the Power Source is switched OFF.
The use of excessive pressure may cause rapid wear of the feed rollers, shafts and bearing.

3.17 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.
Manual 0-5339
WARNING
CAUTION
GROOVE "A"
GROOVE "B" SIZE
Figure 3-13: Dual Groove Feed Roller
Feed Roll
Retaining Screw
Feed Roll
Figure 3-14: Changing the Feed Roll
3-17
GROOVE "B"
GROOVE "A" SIZE
A-09583
Art # A-12445
Firepower MST 180i
INSTALLATION, OPERATION AND SETUP