www.r-techwelding.co.
Thank you for selecting the R-Tech MMA160S Inverter Arc Welder. The MMA160S has many benefits over traditional Arc welders, including an industrial 60% duty cycle, Anti-stick hot start technology, portable and lightweight We want you to take pride in operating our MMA160S as much pride as we have taken in making this product for you.
Introduction The R-Tech MMA160S is a member of our field acclaimed family of welding products. Premium features include:1. 2. 3. 4. 5. 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 MMA160S Rear machine connections Fig 1 1. On/Off Switch Switches main on and off 2. Earth for chassis If experiencing localized interference when using machine, connect workbench to this point using correct graded earth wire (not normally used) 3.
Connections for STICK MMA (SMAW) Welding Fig 3 1. Negative power connector Connect the earth lead to by inserting and twisting until tight and the earth clamp to work/bench. 2.
Controls and Settings Fig 4 1. LED Display 3 digit LED meter is used to display the actual amperage (when welding). 2. Main current control This adjusts the main welding current and is shown in L.E.D (Fig 4.1) when welding is in process.
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 STICK MMA (SMAW) Mode 1. 2. 3. 4. 5. 6. Fit MMA electrode holder to machine Fit earth lead to machine and to work piece Select MMA on MMA/TIG switch Place electrode in holder Select desired welding base current Strike arc and weld Notes: When machine is switched on, output terminals are always live, take care and do not touch electrode and earth by person at same time, otherwise electric shock will occur.
Troubleshooting Service & repair should only be performed by R-Tech welding trained personnel. Unauthorised repairs performed on this welding equipment may result in danger or injury to the technician and machine operator and will invalidate your warranty.
Check condition of tig torch, try other tig torch 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 • Excessive splatter Too long an arc, keep electrode closer to work • Poor penetration Travel speed too fast Too much welding current, reduce weldi
