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28
© Weldclass 2019 | E.&O.E. | Edition 2.2
7.1.2
Loading Wire Feeder
1.
Release the Wire Feed Tension Arms (14 & 21) by pivoting the Wire Feed Tension Adjustment
Levers (13 & 22) towards you from the vertical ‘locked’ position.
2.
Check the wire Drive Rollers’ (15 & 19) groove matches the selected MIG wire type and size. The
drive roller will have two different sized grooves; the size of the groove in use is stamped on the
side of the drive roller. For flux cored ‘soft’ wire, such as that used in gasless MIG welding, the
drive roller groove has a serrated profile (known as knurled). For solid core ‘hard’ MIG wire, the
drive roller groove used has a ‘v’ shaped profile. For Aluminum solid core ‘soft’ MIG wire, the
drive roller required has a ‘u’ shaped groove. If necessary, remove and change the drive rollers by
unthreading the Drive Roller Retainer Knobs (16 & 18). Once the correct drive rollers (15 & 19)
are selected and fitted and the Drive Roller Retainer Knobs (16 & 18) is secured in place, manually
feed the wire through the Wire Inlet Guide (12), through the drive roller grooves & the Centre
Wire Guide Tube (17) and into the Outlet Wire Guide Tube (20).
3.
Ensuring that the wire is correctly seated in the drive roller grooves, replace the Wire Feed
Tension Arms (14 & 21) and lock them into place by pivoting the Wire Feed Tension Adjustment
Lever (13 & 22) back to the vertical position.
4.
Adjusting wire feed tension. This is accomplished by winding the knob on the Wire Feed Tension
Adjustment Lever (13 & 22). Clockwise will increase tension, anticlockwise will decrease drive
tension.
TIP!
Ideal tension is as little as possible, while maintaining a consistent wire feed with
no drive roller slippage.
Check all other causes of excess wire feeding friction causing slippage first, such as;
incorrect/worn drive roller, worn/damaged torch consumables, blocked/damaged
torch wire guide liner, before increasing wire feed tension. There is a number scale on
the Wire Feed Tension Adjustment Levers (13 & 22) to indicate the adjustment
position. The higher the number indicated, the higher the tension that is set.
WARNING!
The use of excessive feed tension will cause rapid and premature wear of
the drive roller, the support bearing and the drive motor/gearbox.
5.
Connect the MIG Torch to the MIG torch Euro Connector (4) on the front of the machine. Secure
by firmly hand tightening the threaded collar on the MIG Torch connector clockwise.
6.
Check that the correct MIG torch tip size is fitted to the MIG Torch.
7.
Connect the machine to suitable mains power using the mains input power lead (24). Switch the
mains power switch (23) to ‘I’ (On) to power up the machine.
8.
Set welding process selector to ‘MIG’ (refer to 4.1)
9.
You are now ready to feed the wire through the torch. With the wire feeder cover open, press the
‘Feed Wire’ button (33) to check that the wire is feeding smoothly through the feeder and into
the torch.
10.
Remove the contact tip from the torch and lay the torch out as straight as possible.
11.
Press the ‘Feed Wire’ button (33) until the wire feeds out through the end of the MIG torch.
12.
Replace the tip on the MIG torch and trim off any excess wire.
Summary of Contents for WeldForce WF-255MST
Page 7: ...WF 255MST Weldclass 2019 E O E Edition 2 2 7 16 4 Warranty Conditions 79...
Page 39: ...WF 255MST Weldclass 2019 E O E Edition 2 2 39 Figure 25...
Page 40: ...40 Weldclass 2019 E O E Edition 2 2 8 6 Primary Schematic Circuit Diagram Figure 26...
Page 45: ...WF 255MST Weldclass 2019 E O E Edition 2 2 45 Figure 33 Figure 34 Figure 35 Figure 36...
Page 80: ...80 Weldclass 2019 E O E Edition 2 2 www Weldclass com au WF 255MST...
