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INSTALLATION
Contents
1 * Inverter based power unit
1 * TIG Torch
1 * Electrode holder lead
1 * Earth return lead
Power switch
Front Panel
Control switches
Rotary controls
Fault lights
Current display
1
2
3
4
5
6
7
8
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INTRODUCTION….cont
Arc welding more accurately described as Manual Metal Arc welding (MMA) pieces of
metal to be fused together by means of an electric ARC, the arc is generated by
electric current flowing across the gap between the metal being welded and an arc
welding electrode.
The electric arc causes a portion of the metal work piece to melt forming a pool of
molten metal. The arc welding electrode, which is coated with flux to prevent the mol-
ten material from reacting with the surrounding atmosphere and to facilitate the stabil-
ity of the arc. During welding the flux is simultaneously melted/vapourized, this flows to
the molten pool of material shielding it from the air and forms a coating over the cool-
ing weld bead, the coating on the weld bead is called `slag` and is removed after
cooling.
By using inverter technology the weight and volume of product can be reduced, while
the efficiency is raised to 85%, this give a machine that is compact, very portable, con-
trollable and energy efficient.
The P177 is a Dual process machine capable of ARC and TIG welding mild steel, car-
bon steel, stainless steel, alloy steel, Aluminium and most other nonferrous metals, all
torches and leads are supplied the user only needs to supply a gas regulator, welding
consumables and the item to weld.
Items the user needs to supply.
MMA mode, welding electrodes that match the work being under taken.
TIG mode, argon gas bottle with regulator, welding electrodes that match the work
being under taken.
DC TIG Welding is similar in principle to MMA. An arc is created between the electrode
which is made from a very durable material called Tungsten and the work piece,
causing a portion of the metal work piece to melt forming a molten pool of metal, the
area is shielded by argon gas. A non-fluxed filler rod, compatible with the work materi-
al, is added to the molten metal pool to form the weld.
The arc is started by pressing holding the electrode close to the surface and pressing
the torch trigger, a high voltage at high frequency is applied to the electrode, as soon
the air is ionised in the gap between the electrode and work piece the welding power
can flow.
The Tungsten is then drawn away sufficiently to avoid contact whilst still maintaining the
The Processes:
