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4.9.
FITTING A 15KG REEL OF WIRE
4.9.1.
MIGHTYMIG models 190 & 210 will accept either a 5kg or a 15kg reel of wire. MIGHTYMIG170 will only accept a 5kg reel of wire.
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.
4.10.
Unscrew the locking knob from the end of the spool holder (see fig.7) and remove the spacer. Slide the reel of wire onto the spool
holder and ensure that the clutch pin at the back of the spool holder engages into the guide hole in the wire reel moulding. This will
prevent the wire reel from free-wheeling on the spool holder. When using a 5kg reel, slide the spacer onto the spool holder before
re-fixing the locking knob. Ensure that the wire is coming off the top of the reel in the direction of the wire drive unit as shown in
fig.8 which shows a 15kg reel of wire in place on the spool holder.
4.11.
FITTING A 5KG REEL OF WIRE
4.11.1.
MIGHTYMIG 170 will only accept a 5kg
reel of wire. 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.
4.11.2.
Remove the retaining knob (D) from the end of the spindle (A) by turning the knob 90° anticlockwise and pulling it outwards (see fig.9).
4.11.3.
Remove the spring (C) and the retaining disc (B) from the end of the spindle also. Slide the reel of wire over the spindle and hold it against
the back plate so that the hole in the reel rests on the flange (E). Ensure that the wire is coming off the top of the reel in the direction
of the wire drive unit as shown in fig.10.
4.11.4.
Retain hand pressure on the reel to keep it on the flange and slide the retaining disc (B) over the end of the spindle and into the hole in
the reel. Note that the disc (B) has a hexagonal hole in it which fits onto the hexagonal portion of the spindle. Keep the disc under hand
pressure to retain the reel. Place the spring (C) over the spigot of the retaining knob (D). Match the indented end of the spigot to the
hole in the end of the spindle. Push the knob spigot into the end of the spindle, against spring pressure and turn it through 90° to lock it
in place.
4.12.
FEED WIRE THROUGH TO TORCH
4.12.1.
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 as
shown in fig.11. Ensure that the required feed groove (0.6 or 0.8) is in line with the wire
path. See Section 4.17 on how to reverse or change the roller.
4.12.2.
Release the wire from the reel and cut off any bent portion ensuring that there are no
burrs left on the end of the wire. Keep the wire under tension at all times to prevent it
uncoiling.
4.12.3.
Straighten about 40-50mm of wire and gently push it through the flexible metal
sheathed cable, fig.11 (3) and through the 6 or 8mm feed roller groove and on into the
torch cable liner.
4.12.4.
Push down the pressure roller carrier onto the wire feed roller and hold it down. Lift up
the locking/wire tension knob so that it enters the slot in the pressure roller carrier and
snaps into the indent in its top surface. See fig.13. Rotate the tension knob to a medium
setting i.e. between 2 and 3.
4.12.5.
4.12.5.
R R emove gas cup (fig.12-2) and contact tip (1) from end of torch as follows:
emove gas cup (fig.12-2) and contact tip (1) from end of torch as follows:
a) Take torch in left hand with the torch tip facing to the right.
b) Grasp gas cup firmly in your right hand.
c) Turn gas cup clockwise only and pull it off end of torch tip.
WARNING! DO NOT turn gas cup anti-clockwise, as this will damage the internal spring.
‰
d) Unscrew copper contact tip (right hand thread) to remove.
d) Unscrew copper contact tip (right hand thread) to remove.
Check welder is switched off "0", and that the earth clamp is away from the torch tip. Connect the welder to the mains power supply and
set the voltage switch to one.
Set the wire speed knob to position 5 or 6. Keep the torch cable as straight as possible and press the torch switch. The wire will feed
through the torch.
When the wire has fed through, switch welder off, unplug from mains.
a) Take torch in left hand, slide the contact tip over the wire and screw back into place.
b) Grasp gas cup in right hand, push onto torch head and turn clockwise only.
© Jack Sealey Limited
fig.5
fig.7
Original Language Version
fig.8
MIGHTYMIG170.V3, 190.V3, 210.V3 Issue:2(F) 21/12/2021
fig.6
fig.9
fig.10
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