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DO NOT turn gas cup anti-clockwise, as this will damage the internal spring.
c) Cut wire so that it is just protruding from the cup.
c) Cut wire so that it is just protruding from the cup.
4.13.
SETTING WIRE TENSION.
4.13.1.
Adjust the wire tension by rotating the wire tension knob. Turn
clockwise to increase the tension and anticlockwise to decrease the
tension. See (1) in fig.13.
IMPORTANT: Too little or too much tension will cause problematic
wire feed and result in poor welding.
4.13.2.
Tension between rollers is checked by slowing down the wire between gloved fingers. If top feed roller skids the tension is correct. Use as
low a tension as possible, too high a tension will disfigure wire and result in a blown fuse.
4.14.
CLUTCH ADJUSTMENT.
NOTE: It is essential that the clutch is adjusted correctly.
4.14.1.
4.14.1.
O O nce the wire is fed through the torch, switch on the machine and set the wire speed to maximum.
nce the wire is fed through the torch, switch on the machine and set the wire speed to maximum.
4.14.2.
4.14.2.
D D epress torch switch and release quickly. If the spool overruns it indicates that the clutch is too loose.
epress torch switch and release quickly. If the spool overruns it indicates that the clutch is too loose.
4.14.3.
4.14.3.
T T ighten the clutch nut located in the centre of the wire spool holder with a spanner (fig.8-C) and test the machine as above until the wire
ighten the clutch nut located in the centre of the wire spool holder with a spanner (fig.8-C) and test the machine as above until the wire
stops over running.
NOTE: DO NOT over tighten the clutch as this will cause wire feed problems and strain the motor.
(MIGHTYTMIG170 is preset and has no direct clutch adjustment.)
(MIGHTYTMIG
170 is preset and has no direct clutch adjustment.)
4.15.
TURNING/CHANGING THE DRIVE ROLLER (See fig.14)
4.15.1.
Ensure that the wire diameter used, is matched by the correct
groove size in the drive wheel and the correct tip size on the torch
as well as the correct torch liner. Failure to do this could cause the
wire to slip and/or bind.
4.15.2.
Referring to fig.11, open the wire feed mechanism by pushing the
locking/wire tension knob (1) down to the right allowing
the pressure roller carrier (2) to spring up revealing the feed roller.
4.15.3.
Referring to fig.14, loosen and unscrew the black feed roller retaining knob (C) and put to one side.
4.15.4.
The roller carrier (A) is keyed to the main drive shaft and the drive roller (B) is keyed to the carrier. Place a finger onto the end of the drive
shaft to prevent the carrier moving and slide the drive roller off the carrier with your other hand.
4.15.5.
The size of each wire feed groove is printed on the edge of the roller on the same side as the groove.
4.15.6.
4.15.6.
T T urn the roller over to use the other groove or use a roller with different sized grooves as required. The groove to be used should be
urn the roller over to use the other groove or use a roller with different sized grooves as required. The groove to be used should be
positioned furthest away from you to be in line with the drive path.
positioned furthest away from you to be in line with the drive path.
4.15.7.
4.15.7.
C C heck that the key in the carrier (A) is properly seated in its slot. Ensure that the slot on the inside face of the drive roller (B) is aligned
heck that the key in the carrier (A) is properly seated in its slot. Ensure that the slot on the inside face of the drive roller (B) is aligned
with the key and slide the roller back onto the carrier.
with the key and slide the roller back onto the carrier.
4.15.8.
4.15.8.
S S crew the black roller retaining knob (C) back on to the end of the drive shaft and tighten.
crew the black roller retaining knob (C) back on to the end of the drive shaft and tighten.
© Jack Sealey Limited
fig.11
fig.14
Original Language Version
MIGHTYMIG170.V3, 190.V3, 210.V3 Issue:2(F) 21/12/2021
fig.12
fig.13
fig.15
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