Impax IM-MIG120 Instruction Manual page 27

MIG ASSEMBLY
Set the amperage using the current control
knob, Fig.15, based on the material thickness.
Fig 15
The recommended electrode size for the flux-
cord, self-shielded process is 0.8 or 0.9mm
diameter spools. Flux-cord wire is excellent for
single pass lap fillet and butt welding of thin
guaged galvanised and mild steels.
Converting To MIG Gas Welding
For welding stainless steel or aluminium, it is
necessary to convert your NO-GAS machine to
GAS operation. This is a simple process once
you have purchased the following parts:
Set up the machine as per Fig.2 on page 21.
Welding Wire: Either Mini or 5kg wire spools, at
0.8mm, 0.9mm & 1mm diameter.
Contact Tips: The appropriate tip must be used
to suit the thickness of wire being used. i.e.,
0.8mm wire requires a 0.8mm tip and 1.0mm
wire requires a 1.0mm tip.
Gas Regulator: Decide in advance whether you
are going to use disposable or rechargable gas
bottles as this will effect the type of regulator
purchased.
Gas: Disposable gas bottles are available from
your dealer, or rechargeable bottles from your
welding supply shop.
Always use the appropriate gas for the material
being welded.
Carbon Dioxide (CO2): For Mild Steel
Argon: For Aluminium
CO2/Argon Mix: For Thin Sheet & Stainless Steel
Attaching A Gas Bottle & Regulator
Fit a suitable regulator and gas supply tube onto
your gas bottle (Please note; regulator, gas
bottle & gas tube not supplied). Attach the other
end of your gas supply tube onto the gas pipe
attachment point on the back of the welder
(Fig.16).
Fig 16
Note: shielding gas is not required when using
flux cored welding wire.
Adjusting The Gas Flow
Turn the control knob on your gas regulator until
the required gas flow is achieved. Set the flow
rate to between 5-10L/min
Installing the Welding Wire
Install the welding wire as previous stated on
pages 24 & 25.
Plug into a 230-240V, 50HZ outlet.
Turn the welder On using the On/Off switch
(Fig. 17).
Fig 17
Press the MIG/MMA/TIG switch to MIG mode,
Fig.18. The indicator light should be illuminated
next to MIG.
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