Power Fist 8154700 Mode D'emploi page 13

Chapter 3
3.2.2 Using mild steel wire.
• The welder can be used with mild steel wire and shield gas for welding carbon steel. The shielding gas
should be either pure (100%) CO
• Make sure you use the proper welding polarity (as shown in fig. 3-2A). The grounding cable
connects with the " – " (negative) terminal, and the welding torch cable connects with the " + "
(positive) terminal. The diameter of the wire you select should correspond to the thickness of the work
piece. Make sure that the contact tip you are using is the same size as the wire diameter.
Step 1: Use the ground clamp to connect the grounding cable and work piece, or connect to the metal
carriages (as on work table). Make sure the clamp is in full contact with the work piece, and the
surface is free of rust and paint.
Step 2: Select the welding current and adjust the positions of the MIN/MAX and 1/2 switches (use higher
welding current for thicker material).
Step 3: Check the position of the power switch (position must be OFF), then insert the inlet wire to
the socket (MIG 136 voltage is 120VAC, MIG 156 voltage is 230VAC, rated current of
socket ≥ 20A).
Step 4: Discharge the nozzle cover and contact tip at the head of welding torch, pull the
soft pipe.
Step 5: Make sure that the welding tongs that clamp the rod are not in contact with any grounding objects.
Turn the ON/OFF switch to the ON position – the power lamp
will light (green).
Step 6: Press and hold the torch button until the distance between the wire and welding
torch is 30 mm, then release button.
Step 7: Turn off the power. Fix the contact tip and nozzle cover onto the welding torch
(wire must go through the contact tip and nozzle cover).
Step 8: Open the gas valve on the regulator and set a flow of 5-7 L/Min., depending on the welding
position chosen.
Step 9: Turn on the power and press the switch a few times. Adjust the speed by
turning the wire feed speed knob, in relation to the position of the welding current selector.
Step 10: Orient yourself on the area to be welded, and place the face shield over your eyes.
Step 11: Press and hold the torch button as you stroke the area to be welded. The electrode wire
will ignite the arc.
Step 12: Once the arc is ignited, tilt the electrode wire forward at an angle of approximately 35°
(see fig. 3-3).
Step 13: When the weld is complete, lift the electrode wire clearly away from any grounded object. Set
your face shield down and turn the power switch to OFF.
Step 14: Unplug the Power Cord from the electrical outlet.
Step 15: Close the gas cylinder valve.
Step 16: Depress torch trigger to release gas in regulator (the gas pressure regulator will return to 0).
If welding with large current for extended periods, or if you exceed the duty
CAUTION
cycle, the overload lamp will light (yellow) and the machine will stop working
until the unit cools. When the overload lamp lights up you must stop welding
and wait about 15 minutes before continuing.
Operation
or a 75% argon - 25% CO
2
mixture.
2
Page 12