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3-1.1 Check the connection of work piece, earth cable, welding torch, gas cylinder,
regulator and hose, make sure they are firm and reliable.
Do not attach earth
cable to the portion that will fall away.
Figure 3.2 Correct way to attach earth clamp
Figure 3.3
3-1.2 Verify that the input gas supply pressure is set to 5kg /cm
2
(5 Bar).
IF the gas
supply pressure lower than 2.5 kg/cm
2
, the overheat light (yellow) will
illuminate and there will be no power output to the torch.
3-1.3 Pull the regulator cap out, gradually turn regulator cap to adjust gas pressure to
4-5 kg/cm
2
(4-5 Bar) and push the regulator cap back in.
3-1.4 Switch on the power source. The power light (red) should illuminate. Adjust the
cutting current and after cutting delay time knob to desired setting.
3-1.5 Hold the torch on the metal (if use spring ring supplied with torch) or keep the
tip away from the metal about 2mm, tilt the torch toward cutting direction, this is
to blow the melted metal away and is particularly important when cutting thicker
material. Make sure that the torch is pointed away from you and the people
near you to avoid any danger from sparks and hot metal.
Push the safety
trigger at the side of the torch first, then press the switch to start cutting.
The working lamp (green) will illuminate.
Does not fire the pilot arc into air
needlessly - doing so cause a significant reduction of the nozzle and
electrode life.
3-1.6 After arc starts, when 2T/4T switch set to 2T, press the torch switch to continue
cutting. When 2T/4T switch set to 4T, release the torch switch, the arc will
continue until press and release the torch switch again.
3-1.7 After arc starts, hold the torch nozzle at vertical position and watch the arc as it
cut along the line. By lightly dragging the shield on the workpiece, you can
maintain a steady cut. For straight-line cutting, use any straight edge as a
guide.
3-1.8 Evenly move the torch in the desired direction, at a speed which will ensure
good cut quality. Pulling the torch through the cut is easier than push it.
3-1.9 When cutting, make sure that the sparks are coming out of the bottom of the
metal. If they are spraying on top of the workpiece, you are moving the torch
too fast, or you do not have sufficient power to fully penetrate the workpiece.
3-1.10 When the cut is finished, release the torch switch (2T) or press and release the
switch again (4T) to extinguish the arc.
3-1.11 After finish operation, turn off the gas valve. In the end, turn off welding power
source and wall switch.
