PS07570 MIG135 115 V MIG Welder Assembly & Operating Instructions Manual
7
Select a heat setting.
Hold the torch in one hand, allowing the nozzle to rest on the edge of the work piece farthest away from
you, and at an angle similar to that which will be used when welding. With your free hand, turn the Wire
Speed Dial to maximum and continue to hold onto the knob.
Lower your welding helmet and pull the trigger on the torch to start an arc, then begin to drag the torch
toward you while simultaneously turning the Wire Speed Dial counterclockwise.
As you decrease the wire speed, the sound that the arc makes will change from a sputtering to a high-
pitched buzzing sound and then will begin sputtering again if you decrease the wire speed too much.
The point on the wire speed adjustment where the high-pitched buzzing sound is achieved is the
correct setting. Use the wire speed control to slightly increase or decrease the heat and penetration for
a given heat setting by selecting higher or lower wire speed settings. Repeat this tune-in procedure if
you select a new heat setting, a different diameter wire, or a different type of welding wire.
HOLDING THE TORCH should be maintained at 60 degrees to reduce the chances of molten metal
falling into the nozzle. Angle B should be held at zero degrees so that the wire is aiming directly into the
weld joint. If you experience excessive dripping of the weld puddle, select a lower heat setting. Also, the
weave bead tends to work better than the stringer.
SPOT WELDING INSTRUCTIONS
1. Select the wire diameter and heat setting recommended above for the method of spot welding you
intend to use.
2. Tune in the wire speed as if you were going to make a continuous weld.
3. Hold the nozzle piece completely perpendicular to and about 1/4 inch off the work piece.
4. Pull the trigger on the torch and release it when it appears that the desired penetration has been
achieved.
5. Make practice spot welds on scrap metal, varying the length of time you hold the trigger, until a
desired spot weld is made.
6. Make spot welds on the actual work piece at desired locations.
OPERATION
Check the welder cutter to see if it has been connected correctly and is in good working condition and
that it complies with safe operation requirements.
Switch on the power supply switch of the cutter to observe if the operation is normal. If it is normal, the
fan should start up and the Power Supply Indicator Light should be on. If there is no compressed air or
the air pressure is low the Low Pressure Indicator Light will be on.
Adjust the air supply valve until the air pressure is up to the cutting torch requirement. (Lowest pressure
should be no less than 50 PSI), the Low Pressure Indicator Light will not be lit up in those conditions.
Adjust the air flow to be sure it is consistent. Pull the torch trigger.
