Specifications

17
WELDING TECHNIQUES
ARC WELDING
Arc welding cables are supplied with this machine.
To prepare the unit for ARC welding, it is important that you follow the
procedure below.
1.
Fig 1
With the ON/OFF switch, located on the
rear panel, in the OFF position, connect
the welding leads as follows:
• Welding Electrode lead to the +ve
ter
minal.
• Work Clamp lead to the -ve terminal.
2. Attach the work clamp to the workpiece
-
as close as possible to the area being
welded. Clean with a wire brush where
necessary to ensure the connection is as
clean as possible.
3. An appropriate current must then be set
by turning the Welding Current Selector located on the front panel of the
machine. With practice you will gain a feel for the correct current setting
for different welding rod thicknesses.
The size (diameter) of welding rod should be approximately the same as the
thickness of metal to be welded.
For beginners, the following table gives some useful guidelines.
Size Of the Welding
Rod
Thickness of the
Workpiece
Current setting
(Amps)
1.5 mm 16 SWG - 1.5 MM. 30-40
2.0 mm 14 SWG - 2.0 MM. 50 - 65
2.5 mm 12 SWG - 2.5 MM. 70 - 100
3.0 mm 10 SWG - 3.25MM 100 - 125