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Summary of Contents for R-Tech MMA 160S
- Page 1 MMA 160S ARC/MMA WELDER OPERATION INSTRUCTIONS...
- Page 3 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.
- Page 4 Welding Capability – Duty Cycle The R-Tech MMA160S is rated at 160 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 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.
- Page 8 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.
- Page 9 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. Positive power connector + Connect the electrode holder by inserting and twisting until tight...
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Page 10: Controls And Settings
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. -
Page 11: 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 12: Welding In Stick Mma (Smaw) Mode
Welding in STICK MMA (SMAW) Mode 1. Fit MMA electrode holder to machine 2. Fit earth lead to machine and to work piece 3. Select MMA on MMA/TIG switch 4. Place electrode in holder 5. Select desired welding base current 6. -
Page 13: Troubleshooting
The troubleshooting guide is provided to help you locate possible machine malfunctions If fault / problem is not listed below check our Arc Welder Support page on our website www.r-techwelding.co.uk/support.php or contact R-Tech by phone. Contact details can be found on front of this manual and our website Welding problems •... - Page 14 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 •...
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