FORNEY 220 ST PRO WELDER QUICK START GUIDE

2. Connect TIG torch and ground clamp

3. Connect TIG torch lead to gas (100% Argon)

Connect Gas

4. Adjust amperage per material thickness

5. Connect to input power

6. Choose between High Frequency (HF) start or Lift Start
Electrode is always electrically hot while in TIG mode

Choose Between HF or Lift Start

Workpiece Grounding Connect ground clamp to clean, bare metal. No rust, paint or other coatings. Attach the ground clamp directly to workpiece if you are experiencing issues.	Workpiece Preparation To ensure maximum quality, always clean and prepare welding surfaces.
Frequently tripping circuit breaker or exceeding duty cycle Welder should be the only thing plugged into the circuit.
Low weld output or poor fusion 110-120V • Usually due to low input power • Welder should be only thing plugged into circuit • Avoid using extension cords. If one must be used, it must be 3 conductor #12 AWG or larger up to 25 feet • Generators must be a minimum 5,000W continuous output with no low-idle function (or low-idle off), 5% THD Max	Low weld output or poor fusion 208-240V • Usually due to low input power • Welder should be only thing plugged into circuit • Avoid using extension cords. If one must be used, it must be 3 conductor #8 AWG • Generators must be a minimum 10,000W continuous output with no low-idle function (or low-idle off), 5% THD Max

2. Connect electrode holder and ground clamp according to desired polarity

3. Connect to input power

4. Adjust amperage per material settings chart on the welder

5. Recommended electrodes

Workpiece Grounding Connect ground clamp to clean, bare metal. No rust, paint or other coatings. Attach the ground clamp directly to workpiece if you are experiencing issues.	Workpiece Preparation To ensure maximum quality, always clean and prepare welding surfaces.
Frequently tripping circuit breaker or exceeding duty cycle Use 3/16″ diameter electrodes or smaller. Some 3/16″ will draw too much amperage. Trying to weld single pass on material larger than 3/8″ thick is not possible with this machine. Multi-pass recommended for thicker materials. Welder should be the only thing plugged into the circuit.
Low weld output or poor fusion 110-120V • Usually due to low input power • Welder should be only thing plugged into circuit • Avoid using extension cords. If one must be used, it must be 3 conductor #12 AWG or larger up to 25 feet • Generators must be a minimum 5,000W continuous output with no low-idle function (or low-idle off), 5% THD Max	Low weld output or poor fusion 208-240V • Usually due to low input power • Welder should be only thing plugged into circuit • Avoid using extension cords. If one must be used, it must be 3 conductor #8 AWG • Generators must be a minimum 10,000W continuous output with no low-idle function (or low-idle off), 5% THD Max

TIG Welding with the Forney 220 ST PRO Welder