Impax IM-MIG150 Instruction Manual page 16

ASSEMBLY
Earth Clamp
Ensure that the area of the work piece where the
earth clamp is to be connected is cleaned using
a file or a grinder to ensure a good electrical
contact. Attach the earth clamp to the work
piece. The earth clamp must only be connected
to the work piece. The area to be welded must
be clean and free from dirt, rust, grease and oil.
Electrode Polarity
The polarity of the electrode can be changed
depending on the material to be welded.
Open up the side cover of the welder and
change the polarity by swapping the position of
the electrode and earth clamp wires on the
terminal connections (Fig.9).
Fig 9
Converting to 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:
Welding Wire: Either Mini or 5kg wire spools, at
0.6mm or 0.8mm diameter.
Contact Tips: The appropriate tip must be used
to suit the thickness of wire being used. i.e.,
8mm wire requires a 0.8mm tip and 0.9mm 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 Impax 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 metal
Attaching Gas Bottle and Regulator
Fit a suitable regulator and gas supply tube onto
your gas bottle (Please note; regulator, gas
supply tube and gas bottle not supplied). Attach
the other end of your gas supply tube onto the
gas pipe attachment point on the back of the
welder (Fig.10).
Fig 10
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.
Adjusting the Output (Fig.11)
Set the amperage using the current control
switch (11.1) and the wire speed control knob
(11.2) located on the front panel, switching from
one setting to another adjusts the output and
wire speed. On thin materials use a low setting
through to a higher speed for thicker materials.
Welding on thick materials will significantly
reduce the duty cycle of the welder.
Fig 11
15
11.1
11.2