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Thank you for selecting the R-Tech Tig315 Inverter AC/DC Tig Welder. The Tig315 has many benefits over traditional tig welders, including 250Hz AC frequency adjustment, squarewave balance control, full pulse welding, slope up/down, remote foot option and an industrial 60% duty cycle We want you to take pride in operating our TIG315 as much pride as we have taken in making this product for you.
Introduction The R-Tech TIG315 is a member of our field acclaimed family of welding products. Premium features include:1. 2. 3. 4. 5. 6. 7. 8. 9. Inverter power source – more efficient to operate, provides smoother weld characteristics.
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. Select suitable location Place the welder where clean cooling air can freely circulate in and out of the front & rear louver vents.
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. These problems may be the result of radiated interference. Proper grounding methods can reduce or eliminate this.
Make sure fuse or circuit breaker is correct rating for machine. Using fuses or circuit breakers smaller than recommended will result in ‘nuisance’ shut off from welder inrush currents even if welding at low amperages. Failure to follow these instructions can cause immediate failure within the welder and void machines warranty. Turn the input power OFF at the mains switch & fuse box before working on this equipment. Have a qualified electrician install & service this equipment.
Connections for TIG315 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. Mains input cable Fit required plug as per your electrical installation 5. Gas input connector Connect input gas hose ensuring connection is tight 6.
Connections for TIG (GTAW) Welding Fig 2 1. Positive power connector + Connect the earth lead to 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. Torch control socket 7-Pin Connect torch control plug To avoid a High Frequency shock keep the Tig torch in good condition and replace if any of the insulation is damaged.
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.
Controls and Settings Fig 4 1. Base current control This adjusts the main welding current and is shown in L.E.D (Fig 4.11) 2. Pulse peak current adjustment This sets pulse amperage and must be set above the base (main) current amperage. If set to zero pulse welding is disabled. 3. LED Display 3 digit LED meter is used to display the pre-set (before welding) amperage and actual amperage (when welding). 4.
Tip. If you are welding close to the tungsten limits, I.E 200amps on a 2.4mm tungsten and the end of tungsten is wobbling and falling off, turning down the SP% will give better tungsten stability 5. AC squarewave frequency adjuster AC Squarewave frequency adjustment 20-250Hz.
When the trigger mode is in the 2 step position the following sequence will occur Press and hold the Tig torch switch to start sequence. The machine will open gas valve to start flow of shield gas, after a 0.5 seconds pre-flow time to purge air from torch hose the welding output of machine will be turned on and the arc will be started. After the arc is started the output current will increase from the start (min) current to base (main) current in time selected by slope-up.
The machine will open gas valve to start flow of shield gas, after a 0.5 seconds pre-flow time to purge air from torch hose the welding output of machine will be turned on and the arc will be started. After the arc is started the output current will be at start (min) current This condition can be maintained as long as required. Release the tig torch switch to go to step 2 The machine will now increase output to base (main) current in time set by slope-up.
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 & gases produced from welding. Use ventilation or exhaust to remove fumes & gases from breathing zone and general area.
Welding in TIG mode – No Pulse – No remote foot pedal 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. Connect the tig torch and earth lead to machine & work piece.
Note: When welding with remote foot pedal Pre-set amperage in LED display will show what the maximum amperage foot pedal will go to (what base amperage control knob is set to), upon welding it will show actual welding amperage. Upon pressing of foot pedal welding arc will start, if you find it hard to start arc push pedal down a bit further to aid starting.
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 Electrode Diameter (mm) RATINGS Pure Tungsten on DC (amps) 1.0mm / 0.040” 2% Thoriated on DC (amps) Red Tip – Grind to point 5 - 80 30 Zirconiated 0.8% Tungsten on AC (amps) White Tip – No need to grind 20 - 60 1.6mm / 1/16” 40- 150 80 40 - 100 2.4 mm/ 3/32” 140 - 250 130 80 - 180 3.
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. Do not touch electrically live parts 1.
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.
• Machine stuck on minimum amps when welding although higher amperage has been set Make sure machine has not been set to 4-way operation as when in this mode when you press torch switch you get minimum amps and when you let go of switch machine will go to maximum amps set. • 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 4way position, this is for torch switch operation only.
• HF spark is present at the tungsten electrode but unable to start welding arc, Machine has normal welding output 1 Tungsten may be contaminated - replace or sharpen 2 The current may be set too low 3 Tungsten may be to large for process 4 Gas flow may be insufficient, increase gas flow, reduce tungsten stick out from ceramic • No HF when torch trigger pressed, no blue spark between HF points Examine and clean HF points with clean dry low pressure air line HF PCB faulty – Contact R-Tech for repair M
