5 OPERATION
0463 703 001
GB
-34-
5.11.1 Removing wire-feed roller
1. If new rollers are being installed select the correct size and type (U-groove, V-groove or knurled) for wire being installed
(see Wear parts section).
2. Disconnect the electrical power source from the unit.
3. Open the cover on the wire-bobbin side of the EMP unit.
4. Before moving the tension knob: note its numerical setting as indicated on its body immediately below the handle.
Record this number to reset the tension in its approximate range. Section "Setting wire-feed pressure" describes the
fine adjustment for this tension adjustment.
NOTE!
Since the wire-feed pressure adjustment must be disturbed to release this arm,
the tension on the rollers will have to be re-adjusted at the end of this procedure.
Recording the undisturbed scale number in the previous step facilitates the
process at the end of the procedure to accurately set the tension.
5. Release the tensioning arm by loosening the tension knob, pulling it up out of its detent and rotating it toward you,
(see 1 in Figure 10). Since the wire-feed pressure adjustment must be disturbed to release this arm, the tension on the
rollers will have to be re-adjusted at the end of this procedure.
NOTE!
The tensioning arm is spring-loaded. It will pop-up when the tension knob is
rotated out-of-the-way.
6. Lift the wire out of its groove.
7. Remove the wire-feed roller by removing its locking knob and sliding the roller from its shaft.
!
!
CAUTION!
When removing the roller be careful not to lose the drive-shaft key on the
motor shaft. Failure to comply will render the entire unit useless until this part is
replaced.
