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Table of Contents
Summary of Contents for Rtech TIG401
- Page 1 TIG401 AC/DC TIG WELDER OPERATION INSTRUCTIONS...
- Page 3 60% duty cycle We want you to take pride in operating our TIG401 as much pride as we have taken in making this product for you. Please read all information in this manual before operation PLEASE EXAMINE THE CARTON AND EQUIPMENT FOR DAMAGE IMMEDIATELY When this equipment is shipped, title passes to the purchaser upon receipt from the courier.
- Page 4 Welding Capability – Duty Cycle The R-Tech Tig401 is rated at 400 Amps at 60% duty cycle on a ten minute basis. If the duty cycle is exceeded a thermal protector will shut machine off until the machine cools.
- Page 5 Safety Precautions Read entire section before starting installation WARNING! Electric Shock can kill – Only qualified personnel should perform this installation. Turn off input power at the fuse box before working on this equipment. Do not touch electrically live parts. Always connect the machine to an earthed mains supply as per national recommended standards.
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Page 6: Electrical Installation
Electrical Installation WARNING! ELECTRIC SHOCK CAN KILL Machine grounding and High Frequency Interference Protection This welder must be grounded to earth. See national electrical codes fro proper grounding methods. The high frequency generator being similar to a radio transmitter may cause interference to radio, TV and other electronic equipment. - Page 7 Allow machine to sit for 5 minutes minimum to allow the power capacitors to discharge before working inside this equipment. Do not touch electrically live parts The TIG401 Inverter Tig Welder requires a 415V 50/60Hz 3-Phase supply. It requires a 20A supply. It comes with a 3 metre mains cable attached.
- Page 8 Connections for Tig401 Rear machine connections Fig 1 1. On/Off Switch 2. Auxiliary 240V AC output For water cooler – Maximum load 3A – Do not connect to power tools etc 3. Fuse Holder 3A fuse for water cooling socket 4.
- Page 9 Connections for TIG (GTAW) Welding Fig 2 1. Positive power connector + Connect the earth lead by inserting and twisting until tight and the earth clamp to work/bench. 2. Gas outlet Connect the torch gas hose 3. Negative power connector - Connect TIG Torch Dinze to power connector by inserting and twisting until tight 4.
- Page 10 Connections for STICK MMA (SMAW) Welding Fig 3 1. Positive power connector + Connect the electrode holder by inserting and twisting until tight 2. Negative power connector - Connect the earth lead to by inserting and twisting until tight and the earth clamp to work/bench.
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Page 11: Controls And Settings
5. AC squarewave frequency adjuster AC Squarewave frequency adjustment 20-250Hz. Traditional TIG welders have a fixed frequency of 60Hz, the TIG401 advanced technology allows AC frequency adjustment from 20-250hz, as you turn up the frequency the width of... - Page 12 arc from tungsten decreases allowing more control of weld pool and an increase travel speed The pitch noise of weld will increase when AC frequency is turned up, this is normal. 100 - 120Hz is the ‘sweet spot’ for most AC welding. 6.
- Page 13 The machine will now decrease output to finish (min) current in time set by slope-down, once at finish (min) current the machine will stop output and the gas valve will continue to operate for the selected time (post flow) Possible variations of this standard sequence are shown in diagram below. It is possible to press and hold tig torch switch a second time during down slope time to restart.
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Page 14: Operating Machine
Operating machine SAFETY PRECAUTIONS WARNING! ELECTRIC SHOCK CAN KILL Do not touch electrically live parts or electrode with skin or wet clothing. Insulate yourself from work and ground Always wear dry insulating gloves WARNING! FUMES AND GASES can be dangerous Keep your head out of fumes &... - Page 15 Welding in TIG mode – No Pulse – No remote foot pedal 1. Connect the tig torch and earth lead to machine & work piece. 2. Set the TIG/MMA switch to TIG 3. Select either DC (steel) or AC (alloys) 4.
- Page 16 60 Hz The two above benefits above can be used to maintain a tight focus of arc for precise heat control & tight joint access. Because of the TIG401 Inverter Technology the following recommendations are made as a starting point.
- Page 17 Tig tungsten size / amperage guide All values below are based on using pure argon shielding gas. Other current values may be employed depending on the shielding gas and application ELECTRODE RATINGS Electrode Diameter (mm) 2% Thoriated on DC Pure Tungsten on DC Zirconiated 0.8% Tungsten (amps) (amps)
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Page 18: Maintenance
Maintenance Routine and periodic maintenance WARNING! ELECTRIC SHOCK CAN KILL Turn the input power OFF at the mains switch & fuse box before working on this equipment. Have a qualified electrician install & service this equipment. Allow machine to sit for 5 minutes minimum to allow the power capacitors to discharge before working inside this equipment. -
Page 19: Tig Welding Problems
TIG welding problems • No output - Power light is not lit Check machine on/off switch is in the ‘on’ position Check Input power to machine Check plug wiring Check mains trip / fuses • No output - Fan runs - Power light is lit Check torch connections are secure and torch switch operation, try replacing tig torch. - Page 20 • When using foot pedal machine is stuck on minimum amps Make sure 2/4 way switch is in 2 way position, the remote foot pedal will not work in the 4- way position, this is for torch switch operation only. •...
- Page 21 MMA Stick welding problems • Stick electrode ‘blasts off’ when arc is struck Welding current set to high, reduce amperage or use thicker electrode Contaminated electrodes or material • Electrode sticks in weld puddle Welding current is set too low Arc is too short, keep electrode further away from work •...
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