8. PREPARING THE WELDERS
FIG. 6
8.4 GAS/NO GAS
For a successful weld joint, the molten metal must
be protected from contaminating gases found in the
air. This is either achieved by supplying the torch
with gas from a bottle or setting the machine up for
no-gas and using a flux cored filler wire. The shield
is produced as the flux in the wire melts.
8.5 POLARITY (FIG.5)
The polarity of the torch and earth clamp must be
made correctly to suit the gas setup.
i.
Attach the earth clamp connector
to
the positive terminal
.
ii.
Attach the welding torch connector
to
the negative terminal
.
Note:
This configuration is for no-gas (flux cored)
welding. Reverse the torch and earth clamp for gas
welding.
8.6 GAS BOTTLE CONNECTION (FIG.6)
To connect a gas bottle to the welder, you may
need a suitable regulator such as Draper Stock
No.44509, or similar.
i
Attach a suitable gauge gas hose
(not supplied) to the large gas bottle
connector
and secure with a hose clip,
then attach the other end to a regulator and
gas
bottle.
FIG. 5
14
Summary of Contents for 71091
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