Original Language Version
© Jack Sealey Limited
5.2.6.
Push down the pressure roller onto the wire feed roller and hold it place then rotate the pressure knob upwards and into the housing
until it snaps into position (fig 4).
5.2.7.
Rotate the tension knob to a medium pressure.
NOTE:
Turning the knob clockwise increases the pressure and turning anti-clockwise decreases the pressure (fig 4).
5.2.8.
Remove the gas cup by turning clockwise and pull it off the end of the torch (fig 7a).
WARNING! DO NOT
turn the gas cup anti-clockwise. This will damage the internal spring.
5.2.9.
Unscrew the copper contact tip (fig 7b).
5.2.10.
Check that the welding set is switched to the OFF position (fig 11) and that the earth clamp is isolated away from the torch tip.
5.2.11.
Connect the welding set to the mains power supply, switch to the ON position and set the voltage switch to ‘A’ (fig 10).
5.2.12.
Keep the torch cable as straight as possible and press the cold wire switch (fig 6) and the wire will feed through the torch.
5.2.13.
When the wire has fully fed through, switch the welding set OFF and unplug from the mains.
5.2.14.
Slide the contact tip over the wire and screw back into position.
5.2.15.
Reattach the gas cup.
WARNING! DO NOT
turn the gas cup anti-clockwise. This will damage the internal spring.
5.2.16.
Cut the wire so that it is just protruding from the gas cup (fig 7).
5.3.
SETTING THE WIRE TENSION
5.3.1.
Adjust the wire tension by turning the wire tension knob (fig 4). Turn clockwise to increase the tension and anti-clockwise to decrease
the tension.
IMPORTANT:
Too little or too much tension will cause problematic wire feed and poor weld quality.
5.3.2.
Tension between rollers is checked by slowing down the wire between your gloved fingers. If the top feed rollers skid the tension is
correct. Use as low a tension as possible; too high a tension will deform wire and result in a blown fuse on the printed circuit board.
Adjust tension by turning the pressure knob (fig 4).
5.4.
TURNING/CHANGING THE DRIVE ROLLER
NOTE:
Ensure that the contact tip, the groove size on the drive wheel and torch liner correspond to the wire diameter being used. Failure
to do this could cause the wire to slip and/or bind.
5.4.1.
Open the wire feed mechanism. See section 5.2.
5.4.2.
Rotate the roller retaining cap (fig 4) counter clockwise and remove from the retaining groove and place to one side.
5.4.3.
Lift the drive roller off the square drive shaft (figs 8 & 9).
NOTE:
The size of each wire feed groove is marked on the edge of the roller on the same side as the groove.
5.4.4.
Reverse or replace the drive roller as required. The required groove should be positioned furthest away from you and be in line with the
drive path.
5.4.5.
Replace the drive roller.
5.4.6.
Place the roller retaining cap over the drive roller and lock into place by turning clockwise into the retaining groove.
5.4.7.
Close the wire feed mechanism. See section 5.2.6.
5.5.
WIRE FEED CONTROL
5.5.1.
Select the desired wire feed with the ‘Wire Feed Control’ control located on the front panel of the welding set (fig 10).
6. CONTROLS
6.1.
Fig 10 illustrates the main panel control for MiniMig100.
fig.7
fig.8
fig.9
fig.10
fig.11
Minimig100 Issue 1 23/05/22
Power
Power
indicator
indicator
Thermostat
Thermostat
indicator
indicator
Voltage adjustment
Voltage adjustment
Wire speed adjustment
Wire speed adjustment
