Full Product Manual
11
NOTICE:
This manual has been compiled to give an overview of operation and is designed to offer information centered around
safe, practical use of the welder and its functions Welding operations are inherently dangerous. Only the operator of
this welder can ultimately ensure that safe operating practices are being followed, through the exercise of common
sense practices and training. Do not operate this machine until you have fully read the manual, including the safety
section. If you do not have the skill or knowledge to safely operate this unit and its related functions, do not use this
welder until formal training is received. Always be aware of your surroundings and operating environment and who
and what is in that environment.
Section 1 Introduction and Specifications
General Product and Use Information
GENERAL PRODUCT INFORMATION:
The Lightning MTS 275 is a multi-process welder with DC MIG, Flux-cored, AC/DC Pulse TIG, and DC Stick welding
capabilities. The design of the Lightning MTS 275 is a second generation design of the Industry’s rst series of true
multi-process welder design with AC/DC TIG capability. This welder has a fully integrated digital design that includes
a 4.3” TFT LCD color display and self-diagnosing features and can operate on 120V or 240V input. Advanced AC TIG
Pulse capability, adjustable wave forms (increased to 4) for AC TIG welding, increased memory, Power Set synergic
function in all welding modes and a lower amp AC start are all new or improved features for this unit. Dual gas inlets
for TIG and MIG have also been added. The simple and intuitive operator interface allows the operator to view most
settings at a glance and quickly adjust them without accessing additional levels of menus. This reduced step menu
design is unique and has been carefully designed for quickest and easiest access and adjustment.
GENERATOR REQUIREMENTS AND OPERATION
This unit may be run on a generator capable of 12,000 Surge Watts. Additionally, the generator must provide “clean
power”. Clean power is dened as having 5% or less Total Harmonic Distortion (THD). This is a rating given by the
manufacturer of the generator, and not Everlast. This is similar to the power normally supplied at a wall outlet. This
represents a sine wave (AC) that is mostly free of voltage spikes and electronic noise. Many general purpose (GP)
generators are not rated to produce clean power and are designed for emergency or construction use with resistive
loads such as lights or heaters. These generators can damage the plasma cutter. If damage does not occur immedi-
ately, the effect can be cumulative, depending on how “dirty” the power actually is. Damage created by running this
unit off a generator, or welder/generator not rated for clean power output by its manufacturer will not be covered under
warranty. If you are in doubt about your generator or welder/generator, contact the manufacturer. Everlast does not
keep an authorized list of generator brands or models. If the manufacturer rates its generator for 5% or less THD, this
is sufcient to meet Everlast’s stated standards. Use due diligence to perform additional research on the brand and
model of the generator to make certain there are no recalls or reported equipment (electronics in particular) damage
related to malfunctioning generators.
The generator should be properly grounded, according to the generator manufacturer instructions.
Never leave the unit on or connected while starting the generator. Never stop the generator while the unit is on or
connected. Severe damage will occur. This includes running the generator low on or out of fuel. This damage is not
covered under warranty, even if the unit is rated as “clean powered”. Always allow the generator to warm up before
plugging the unit in and using it. A cold engine may not develop or maintain proper RPM needed to provide stable,
clean power even if the unit is rated to be “clean power”. Never use economy idle (ECO mode), or auto idle modes
with this unit. Use high idle whenever connected to the welder.
WARNING!
• Do not use the welder in damp or wet areas. Perspiration and other forms of water in contact with the body can increase the
risk of electrocution.
• Do not use the welder in corrosive environments.
• If used on a mobile cart, strap or x the welder to the cart so that accidental overturn is not likely.