Forney 220 ST Operating Manual Download Page 10

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Primary (Input) Volts

230/120VAC

Maximum Output

220A (DC output only)

Phase

Single

Frequency

50/60Hz

Recommended Circuit Breaker

50A for 230V or 30A for 120V

Extension Cord Recommendations

230V- 3 conductor # 8 AWG

120V -3 conductor #12 AWG or larger up to 25 ft.

Generator Requirements

230V -Minimum 10,000W continuous output with no low-idle 

function (or low-idle off), 5% THD Max.

120V- Minimum 5,000W continuous output with no low-idle 
function (or low-idle off), 5% THD Max.

CSA Rated Output and Duty Cycle

Refer to the data plate of your machine and the DUTY CYCLE 

section of this manual, page 14.

Dimensions

17.5" (444.5mm) X 7" (177.8mm) X 12.5" (317.5mm)

Recommended Electrode Diameter

Up to 3/16” (depending on type)

 

BE SURE TO LOCATE THE WELDER ACCORDING TO THE FOLLOWING GUIDELINES:

•  In areas free from moisture and dust;
•  In areas with ambient temperature between 30° to 90°F;
•  In areas free from oil, steam and corrosive gases;
•  In areas not subjected to abnormal vibration or shock;
•  In areas not exposed to direct sunlight or rain;
•  Place at a distance of 12” or more from walls or similar obstructions that could restrict natural air flow for cooling.

Before you make any electrical connection, make sure that the ON/OFF SWITCH is OFF, power supply voltage and 

frequency available at site are those stated in the ratings label of your welder.
The main power supply voltage should be within ±10% of the rated main power supply voltage. Too low a power supply 

voltage may cause poor welding performance. Too high a power supply voltage will cause components to overheat and 

possibly fail. The welder outlet must be

• 

Correctly installed, if necessary, by a qualified electrician;

• 

Correctly grounded (electrically) in accordance with national and local regulations;

• 

Connected to an electric circuit that is rated for sufficient amperage per the ratings label of your welder.

If you are unsure of any of the above, have your outlet inspected by a qualified electrician before using the welder.

NOTE:

• 

Periodically inspect INPUT POWER CABLE for any cracks or exposed wires. If it is not in good condition, have it 

repaired by a Service Center.

• 

Do not cut off the grounding prong or alter the plug in any way. Only use the included adapter between the welder’s 

INPUT POWER CABLE and the power source receptacle.

• 

Do not violently pull the INPUT POWER CABLE to disconnect it from power outlet.

• 

Do not lay material or tools on the INPUT POWER CABLE. The INPUT POWER CABLE may be damaged and result in 

electrical shock.

• 

Keep the INPUT POWER CABLE away from heat sources, oils, solvents or sharp edges.

• 

Do not use this welder on a circuit with a Ground Fault Circuit Interrupter (GFCI) on it. GFCIs are tripped by welding 

arcs and your welding operations will be interrupted regularly.

Installation

Welder Specifications

Site Selection

Power Source Connection

Summary of Contents for 220 ST

Page 1: ...ITEM 430 REV 08 08 2019 220 ST STICK TIG ARC WELDER OPERATING MANUAL ENGLISH...

Page 2: ...solutions to our customer s needs Above all our employees will provide the same respect and caring attitude within the organization as they are expected to share with every Forney customer Our goal wi...

Page 3: ...epair or replace defective products at no charge to you When you call Forney s Technical Service department you will speak to a trained product and application expert Forney s primary goal is to get y...

Page 4: ...URCE CONNECTION 10 GENERATORS 11 EXTENSION CORDS 11 VENTILATION 11 ADDITIONAL WARNINGS 11 GETTING TO KNOW YOUR WELDER 12 DESCRIPTION 12 WELDER LAYOUT AND CONTROLS 12 OPERATION 14 PERFORMANCE DATA PLAT...

Page 5: ...your state OSHA office or U S Dept of Labor OSHA Office of Public Affairs Room N3647 200 Constitution Ave Washington DC 20210 www osha gov AWS F4 1 SAFE PRACTICES FOR THE PREPARATION FOR WELDING AND C...

Page 6: ...es are not strictly observed THE WELDING ARC PRODUCES VERY BRIGHT ULTRAVIOLET AND INFRARED LIGHT THESE ARC RAYS WILL DAMAGE YOUR EYES AND BURN YOUR SKIN IF YOU ARE NOT PROPERLY PROTECTED To reduce the...

Page 7: ...improve ventilation in the welding area Do not resume welding if physical discomfort persists Fire Prevention FIRE OR EXPLOSION CAN CAUSE DEATH INJURY AND PROPERTY DAMAGE To reduce these risks read un...

Page 8: ...sher nearby High Frequency Radiation High Frequency H F can interfere with radio navigation safety services computers and communication equipment It is the user s responsibility to have a qualified el...

Page 9: ...und shoulders or any other part of the body when they are plugged into the welder Do not modify any wiring ground connections switches or fuses in this welding equipment Wear welding gloves to help in...

Page 10: ...tings label of your welder The main power supply voltage should be within 10 of the rated main power supply voltage Too low a power supply voltage may cause poor welding performance Too high a power s...

Page 11: ...electing an extension cord appropriate for use with your specific welder Select a properly grounded extension cord that will mate directly with the AC power source receptacle and the welder INPUT POWE...

Page 12: ...there is a general welding or machine fault 5 SECONDARY PARAMETER KNOB SELECTOR for the function selection a PULSE Hz Frequency Pulses per second or Hertz b PULSE On Balance at Peak Amperage Peak c A...

Page 13: ...13 WWW FORNEYIND COM 1 1a 5a 1b 5b 1c 5c 4 3 2 REAR VIEW OF FORNEY 220 ST PRO WELDER 11 12 13 FRONT VIEW OF FORNEY 220 ST PRO WELDER 6 7 8 9 5 10...

Page 14: ...o the duty cycle Various duty cycles at other amperages are listed on your data plate Example Data Plate If you exceed the duty cycle of the welder the thermal protection system will engage shutting o...

Page 15: ...ATIVE DINSE SOCKETS accordingly Direct current electrode positive DCEP or direct current reverse polarity DCRP electrode holder in POSITIVE DINSE SOCKET ground clamp in NEGATIVE DINSE SOCKET Most elec...

Page 16: ...c Use pedal or torch to adjust output amperage while working REMEMBER TO CLOSE THE VALVE ON THE GAS CYLINDER IMMEDIATELY AFTER ALL WELDING IS COMPLETED Welding Tips Always weld clean dry and well prep...

Page 17: ...GSTEN DCEN Th La Ce AC La Ce AC Pure 040 10 50A 20 40A N A 1 16 40 120A 30 170A 30 90A 3 32 90 200A 60 180A 40 120A 1 8 150A 130A 100 200A This machine has a 7 pin Amphenol style connection for connec...

Page 18: ...able does not provide all possible solutions only those possibilities considered likely to be common faults PROBLEM POSSIBLE CAUSE POSSIBLE SOLUTION All LEDs OFF No output power Fan not operating No i...

Page 19: ...ircuit breaker trips Machine is drawing too much amperage due to use of larger size electrode Use a smaller electrode Machine is not the only piece of electrical equipment on the circuit Make sure the...

Page 20: ...ORNEYIND COM Machine Parts Diagram Replacement Parts List NO PART NUMBER ITEM DESCRIPTION 1 85668 Ground 50 Dinse 2 85670 Electrode Holder 50 Dinse 3 85516 120 230V Power Adaptor Plug 4 5084 Expert Te...

Page 21: ..._ ________________________________________________________________________________ ________________________________________________________________________________ ____________________________________...

Page 22: ..._ ________________________________________________________________________________ ________________________________________________________________________________ ____________________________________...

Page 23: ..._ ________________________________________________________________________________ ________________________________________________________________________________ ____________________________________...

Page 24: ...Forney Industries Inc 2057 Vermont Drive Fort Collins CO 80525 1 800 521 6038 www forneyind com...

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