Tweco FP-260 - Manual (Page 12)

Advantages of Flux Core (FCAW) Welding
1. There is no need for gas cylinders.
2. Welding outdoors is easier because there are fewer chances that wind blows away the shielding gas.
3. Welding time is about 50% less compared to the normal electrode welding.
4. The learning time for the operator is very short.
5. Minimum waste of welding material.
6. Most important, this process allows completion of the welding more quickly and efficiently.
7. Less heat, less distortion.
8. Possible to weld thin materials.
FOR MIG (GMAW) WELDING WITH A SHIELDING GAS
When changing the polarity, make sure the connectors are hand tight.
1. Connect the welding machine to the 230V, 60 Hz line.
2. Make sure that the polarity of the MIG gun and work cable is correctly set. For MIG (GMAW) welding, the
ground cable must be connected to the negative terminal, while the MIG gun must be connected to the posi-
tive terminal (See Figure 4).
3. Connect the work cable and clamp to the work
piece. Make sure there is a good contact.
4. Make sure the wire-feeding roll is correctly
positioned (groove matching the wire diameter).
Note that each roll has two grooves, one is
marked “.035/0.9mm” and the other is marked
“.030/0.8mm”.
5. This unit comes with a genuine FIREPOWER
regulator and requires adjustment of the flow of
shielding gas.
Advantages of MIG (GMAW) Welding
1. Clean, strong welding.
2. Better visual welds.
3. Ability to weld thinner materials.
4. Broadens the range of materials, aluminum, stainless and cast iron.
Gas Cylinder Connection
1. Assemble the pressure regulator to the cylinder. Tighten the regulator nut, but DO
NOT overtighten. Overtightening can damage the cylinder valve.
2. Connect the gas hose to the regulator.
3. Open the cylinder valve. Release the tension adjustment device on the wire feeder and
push the torch trigger to ensure that the gas is flowing through the torch. The welding
machine must be turned on to check for gas flow.
Cylinders are highly pressurized. Handle with care. Serious acci-
dents can result from improper handling or misuse of compressed gas cylin-
ders. DO NOT drop the cylinder, knock it over, expose it to excessive heat,
flames or sparks. DO NOT strike it against other cylinders. Contact your gas
supplier for more information about the use and handling of cylinders.
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Figure 5: Gas Cylinder
Connection
Figure 4: Polarity Preparation for Welding with Gas