– 8 –
7.4 MMA (MANUAL METAL ARC)
To attach the electrode holder
(14)
to the front panel,
insert the plug into positive coupling
(9)
and twist to
lock.
Attach the earth clamp
(13)
to the negative coupling
(11)
and twist clockwise to lock.
7.5 INSTALLING THE FILLER WIRE
(MIG WELDER) – FIGS. 2 - 6
The welding machine is designed to accept the standard
size drums of wire (1kg & 5kg).
The welding wire can be either of the flux-cored types
this provides a means of shielding the weld pool from
the atmosphere.
Or non-flux wire with the gas hose connected to the
back of the machine.
Do not let the filler wire become uncoiled or tangled as
this will lead to problems with delivery to the welding
torch.
Select the filler wire suitable for the parent metal and
with a gauge to match the welder specification.
Note: If the welding machine is not regularly used,
remove the wire which is prone to rust and will cause
feed problems next time.
1. Open the side panel.
2. Unscrew the large plastic ring. Sit the reel on to the
hub
(18)
and make sure the peg locates in the back
of the reel. Refit the large plastic ring.
3. Fit the wire spool so that it feeds off the base of the
reel towards the wire drive unit
(19)
.
4. Pull tensioner
(19.1)
forward off the tension arm
(19.2)
, the tension arm
(19.2)
will spring up out of the
way.
2
FIG.
(19.2)
(19.1)
(19.3)
(19.4)
5. The wire must sit in the appropriate groove for the
wire gauge. The groove size is etched on the side of
the roller. Remove nut to see the groove size that is
NOT in use. The drive roller
(19.4)
can be removed
from shaft, to change the groove size for appropriate
wire gauge. Unscrew and remove the retaining cap.
6. Pass the filler wire through the guide
(19.3)
and over
the top of the drive roller, make sure the wire is well
inside the torch liner before closing the arm
(19.2)
and tensioner
(19.1)
.
3
FIG.
(19.1)
(19.2)
(19.3)
7. Connect the welding machine to the power supply.
8. Attach the Polarity change plug
(10)
as illustrated for
either GAS or GASLESS.
FIG.
4
GASLESS
MIG WELDING
(9)
FIG.
5
(9)
9. Press the feed trigger on gun and observe the wire
feed mechanism. If the wire is being fed correctly it
will come out of the swan neck. If it jams you will
need to remove the gas shroud
(12.1)
and with a
small spanner unscrew and remove the tip
(12.2)
.
Pass the tip over the wire and secure back onto the
swan neck. Do not over tighten. Resecure the gas
shroud and trim the wire back as required.
