Brief Introduction - Matco Tools MG208 Operator's Manual

§2.1 Brief Introduction
The M-Series of MIG, MAG INVERTER arc welding machine adopts the latest pulse width
modulation (PWM) technology and insulated gate bipolar transistor (IGBT) power module, which can
change work frequency to medium frequency so as to replace the traditional hulking work frequency
transformer with the compact medium frequency transformer. This technology provides a compact,
lightweight, portable power supply with high output power and superior efficiency.
M-Series arc welding machines are designed to use active gas（Ar+O
gas（Ar) for MIG/MAG welding or Flux-Cored wire for non-shield gas welding.
The MGI Series arc welding machine has automatic protection functions with intelligent to over-
voltage, over-current and over-heat sensing with auto-reset. If any one of the above problems
happens, the alarm lamp on the front panel will illuminate and output current will be shut off
automatically to protect itself and prolong the equipment using life.
M-SERIES Features:
1. Digital control system with infinitely adjustable (non-step) settings for power & wire speed
2. Electronic inverter power source provides high performance and efficiency
3. Waveform control provides stable welding arc on all materials and power settings
4. IGBT technology insures low power dissipation in compact package
5. Superior 40% duty cycle inverter design for professional welding.
The M-Series arc welding machine is suitable for all positions welding for various materials
including stainless steel, carbon steel, alloy steel, etc. common in the auto body repair, light
fabrication, pipe installment, petrochemical, architectural, general construction, farming and
restoration industries.
MAG--Metal Active Gas Welding (Mixed Argon, CO
MIG--Metal Insert Gas Welding (Argon or Helium Gas)
FLUX-CORED—Arc Welding (No-Gas)
OVERVIEW
§2 Overview
or O
2
6
、Ar+CO
2
)
2
and inactive
2